[pypy-commit] pypy ppc-jit-backend: merge default

bivab noreply at buildbot.pypy.org
Tue Jan 10 14:13:53 CET 2012


Author: David Schneider <david.schneider at picle.org>
Branch: ppc-jit-backend
Changeset: r51203:d094b25960ad
Date: 2012-01-10 14:13 +0100
http://bitbucket.org/pypy/pypy/changeset/d094b25960ad/

Log:	merge default

diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -27,7 +27,7 @@
     DEALINGS IN THE SOFTWARE.
 
 
-PyPy Copyright holders 2003-2011
+PyPy Copyright holders 2003-2012
 ----------------------------------- 
 
 Except when otherwise stated (look for LICENSE files or information at
diff --git a/lib_pypy/numpypy/__init__.py b/lib_pypy/numpypy/__init__.py
new file mode 100644
--- /dev/null
+++ b/lib_pypy/numpypy/__init__.py
@@ -0,0 +1,2 @@
+from _numpypy import *
+from fromnumeric import *
diff --git a/lib_pypy/numpypy/fromnumeric.py b/lib_pypy/numpypy/fromnumeric.py
new file mode 100644
--- /dev/null
+++ b/lib_pypy/numpypy/fromnumeric.py
@@ -0,0 +1,2400 @@
+######################################################################    
+# This is a copy of numpy/core/fromnumeric.py modified for numpypy
+######################################################################
+# Each name in __all__ was a function in  'numeric' that is now 
+# a method in 'numpy'.
+# When the corresponding method is added to numpypy BaseArray
+# each function should be added as a module function 
+# at the applevel 
+# This can be as simple as doing the following
+#
+# def func(a, ...):
+#     if not hasattr(a, 'func')
+#         a = numpypy.array(a)
+#     return a.func(...)
+#
+######################################################################
+
+import numpypy
+
+# Module containing non-deprecated functions borrowed from Numeric.
+__docformat__ = "restructuredtext en"
+
+# functions that are now methods
+__all__ = ['take', 'reshape', 'choose', 'repeat', 'put',
+           'swapaxes', 'transpose', 'sort', 'argsort', 'argmax', 'argmin',
+           'searchsorted', 'alen',
+           'resize', 'diagonal', 'trace', 'ravel', 'nonzero', 'shape',
+           'compress', 'clip', 'sum', 'product', 'prod', 'sometrue', 'alltrue',
+           'any', 'all', 'cumsum', 'cumproduct', 'cumprod', 'ptp', 'ndim',
+           'rank', 'size', 'around', 'round_', 'mean', 'std', 'var', 'squeeze',
+           'amax', 'amin',
+          ]
+          
+def take(a, indices, axis=None, out=None, mode='raise'):
+    """
+    Take elements from an array along an axis.
+
+    This function does the same thing as "fancy" indexing (indexing arrays
+    using arrays); however, it can be easier to use if you need elements
+    along a given axis.
+
+    Parameters
+    ----------
+    a : array_like
+        The source array.
+    indices : array_like
+        The indices of the values to extract.
+    axis : int, optional
+        The axis over which to select values. By default, the flattened
+        input array is used.
+    out : ndarray, optional
+        If provided, the result will be placed in this array. It should
+        be of the appropriate shape and dtype.
+    mode : {'raise', 'wrap', 'clip'}, optional
+        Specifies how out-of-bounds indices will behave.
+
+        * 'raise' -- raise an error (default)
+        * 'wrap' -- wrap around
+        * 'clip' -- clip to the range
+
+        'clip' mode means that all indices that are too large are replaced
+        by the index that addresses the last element along that axis. Note
+        that this disables indexing with negative numbers.
+
+    Returns
+    -------
+    subarray : ndarray
+        The returned array has the same type as `a`.
+
+    See Also
+    --------
+    ndarray.take : equivalent method
+
+    Examples
+    --------
+    >>> a = [4, 3, 5, 7, 6, 8]
+    >>> indices = [0, 1, 4]
+    >>> np.take(a, indices)
+    array([4, 3, 6])
+
+    In this example if `a` is an ndarray, "fancy" indexing can be used.
+
+    >>> a = np.array(a)
+    >>> a[indices]
+    array([4, 3, 6])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+# not deprecated --- copy if necessary, view otherwise
+def reshape(a, newshape, order='C'):
+    """
+    Gives a new shape to an array without changing its data.
+
+    Parameters
+    ----------
+    a : array_like
+        Array to be reshaped.
+    newshape : int or tuple of ints
+        The new shape should be compatible with the original shape. If
+        an integer, then the result will be a 1-D array of that length.
+        One shape dimension can be -1. In this case, the value is inferred
+        from the length of the array and remaining dimensions.
+    order : {'C', 'F', 'A'}, optional
+        Determines whether the array data should be viewed as in C
+        (row-major) order, FORTRAN (column-major) order, or the C/FORTRAN
+        order should be preserved.
+
+    Returns
+    -------
+    reshaped_array : ndarray
+        This will be a new view object if possible; otherwise, it will
+        be a copy.
+
+
+    See Also
+    --------
+    ndarray.reshape : Equivalent method.
+
+    Notes
+    -----
+
+    It is not always possible to change the shape of an array without
+    copying the data. If you want an error to be raise if the data is copied,
+    you should assign the new shape to the shape attribute of the array::
+
+     >>> a = np.zeros((10, 2))
+     # A transpose make the array non-contiguous
+     >>> b = a.T
+     # Taking a view makes it possible to modify the shape without modiying the
+     # initial object.
+     >>> c = b.view()
+     >>> c.shape = (20)
+     AttributeError: incompatible shape for a non-contiguous array
+
+
+    Examples
+    --------
+    >>> a = np.array([[1,2,3], [4,5,6]])
+    >>> np.reshape(a, 6)
+    array([1, 2, 3, 4, 5, 6])
+    >>> np.reshape(a, 6, order='F')
+    array([1, 4, 2, 5, 3, 6])
+
+    >>> np.reshape(a, (3,-1))       # the unspecified value is inferred to be 2
+    array([[1, 2],
+           [3, 4],
+           [5, 6]])
+
+    """
+    if not hasattr(a, 'reshape'):
+       a = numpypy.array(a)
+    return a.reshape(newshape)
+
+
+def choose(a, choices, out=None, mode='raise'):
+    """
+    Construct an array from an index array and a set of arrays to choose from.
+
+    First of all, if confused or uncertain, definitely look at the Examples -
+    in its full generality, this function is less simple than it might
+    seem from the following code description (below ndi =
+    `numpy.lib.index_tricks`):
+
+    ``np.choose(a,c) == np.array([c[a[I]][I] for I in ndi.ndindex(a.shape)])``.
+
+    But this omits some subtleties.  Here is a fully general summary:
+
+    Given an "index" array (`a`) of integers and a sequence of `n` arrays
+    (`choices`), `a` and each choice array are first broadcast, as necessary,
+    to arrays of a common shape; calling these *Ba* and *Bchoices[i], i =
+    0,...,n-1* we have that, necessarily, ``Ba.shape == Bchoices[i].shape``
+    for each `i`.  Then, a new array with shape ``Ba.shape`` is created as
+    follows:
+
+    * if ``mode=raise`` (the default), then, first of all, each element of
+      `a` (and thus `Ba`) must be in the range `[0, n-1]`; now, suppose that
+      `i` (in that range) is the value at the `(j0, j1, ..., jm)` position
+      in `Ba` - then the value at the same position in the new array is the
+      value in `Bchoices[i]` at that same position;
+
+    * if ``mode=wrap``, values in `a` (and thus `Ba`) may be any (signed)
+      integer; modular arithmetic is used to map integers outside the range
+      `[0, n-1]` back into that range; and then the new array is constructed
+      as above;
+
+    * if ``mode=clip``, values in `a` (and thus `Ba`) may be any (signed)
+      integer; negative integers are mapped to 0; values greater than `n-1`
+      are mapped to `n-1`; and then the new array is constructed as above.
+
+    Parameters
+    ----------
+    a : int array
+        This array must contain integers in `[0, n-1]`, where `n` is the number
+        of choices, unless ``mode=wrap`` or ``mode=clip``, in which cases any
+        integers are permissible.
+    choices : sequence of arrays
+        Choice arrays. `a` and all of the choices must be broadcastable to the
+        same shape.  If `choices` is itself an array (not recommended), then
+        its outermost dimension (i.e., the one corresponding to
+        ``choices.shape[0]``) is taken as defining the "sequence".
+    out : array, optional
+        If provided, the result will be inserted into this array. It should
+        be of the appropriate shape and dtype.
+    mode : {'raise' (default), 'wrap', 'clip'}, optional
+        Specifies how indices outside `[0, n-1]` will be treated:
+
+          * 'raise' : an exception is raised
+          * 'wrap' : value becomes value mod `n`
+          * 'clip' : values < 0 are mapped to 0, values > n-1 are mapped to n-1
+
+    Returns
+    -------
+    merged_array : array
+        The merged result.
+
+    Raises
+    ------
+    ValueError: shape mismatch
+        If `a` and each choice array are not all broadcastable to the same
+        shape.
+
+    See Also
+    --------
+    ndarray.choose : equivalent method
+
+    Notes
+    -----
+    To reduce the chance of misinterpretation, even though the following
+    "abuse" is nominally supported, `choices` should neither be, nor be
+    thought of as, a single array, i.e., the outermost sequence-like container
+    should be either a list or a tuple.
+
+    Examples
+    --------
+
+    >>> choices = [[0, 1, 2, 3], [10, 11, 12, 13],
+    ...   [20, 21, 22, 23], [30, 31, 32, 33]]
+    >>> np.choose([2, 3, 1, 0], choices
+    ... # the first element of the result will be the first element of the
+    ... # third (2+1) "array" in choices, namely, 20; the second element
+    ... # will be the second element of the fourth (3+1) choice array, i.e.,
+    ... # 31, etc.
+    ... )
+    array([20, 31, 12,  3])
+    >>> np.choose([2, 4, 1, 0], choices, mode='clip') # 4 goes to 3 (4-1)
+    array([20, 31, 12,  3])
+    >>> # because there are 4 choice arrays
+    >>> np.choose([2, 4, 1, 0], choices, mode='wrap') # 4 goes to (4 mod 4)
+    array([20,  1, 12,  3])
+    >>> # i.e., 0
+
+    A couple examples illustrating how choose broadcasts:
+
+    >>> a = [[1, 0, 1], [0, 1, 0], [1, 0, 1]]
+    >>> choices = [-10, 10]
+    >>> np.choose(a, choices)
+    array([[ 10, -10,  10],
+           [-10,  10, -10],
+           [ 10, -10,  10]])
+
+    >>> # With thanks to Anne Archibald
+    >>> a = np.array([0, 1]).reshape((2,1,1))
+    >>> c1 = np.array([1, 2, 3]).reshape((1,3,1))
+    >>> c2 = np.array([-1, -2, -3, -4, -5]).reshape((1,1,5))
+    >>> np.choose(a, (c1, c2)) # result is 2x3x5, res[0,:,:]=c1, res[1,:,:]=c2
+    array([[[ 1,  1,  1,  1,  1],
+            [ 2,  2,  2,  2,  2],
+            [ 3,  3,  3,  3,  3]],
+           [[-1, -2, -3, -4, -5],
+            [-1, -2, -3, -4, -5],
+            [-1, -2, -3, -4, -5]]])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def repeat(a, repeats, axis=None):
+    """
+    Repeat elements of an array.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+    repeats : {int, array of ints}
+        The number of repetitions for each element.  `repeats` is broadcasted
+        to fit the shape of the given axis.
+    axis : int, optional
+        The axis along which to repeat values.  By default, use the
+        flattened input array, and return a flat output array.
+
+    Returns
+    -------
+    repeated_array : ndarray
+        Output array which has the same shape as `a`, except along
+        the given axis.
+
+    See Also
+    --------
+    tile : Tile an array.
+
+    Examples
+    --------
+    >>> x = np.array([[1,2],[3,4]])
+    >>> np.repeat(x, 2)
+    array([1, 1, 2, 2, 3, 3, 4, 4])
+    >>> np.repeat(x, 3, axis=1)
+    array([[1, 1, 1, 2, 2, 2],
+           [3, 3, 3, 4, 4, 4]])
+    >>> np.repeat(x, [1, 2], axis=0)
+    array([[1, 2],
+           [3, 4],
+           [3, 4]])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def put(a, ind, v, mode='raise'):
+    """
+    Replaces specified elements of an array with given values.
+
+    The indexing works on the flattened target array. `put` is roughly
+    equivalent to:
+
+    ::
+
+        a.flat[ind] = v
+
+    Parameters
+    ----------
+    a : ndarray
+        Target array.
+    ind : array_like
+        Target indices, interpreted as integers.
+    v : array_like
+        Values to place in `a` at target indices. If `v` is shorter than
+        `ind` it will be repeated as necessary.
+    mode : {'raise', 'wrap', 'clip'}, optional
+        Specifies how out-of-bounds indices will behave.
+
+        * 'raise' -- raise an error (default)
+        * 'wrap' -- wrap around
+        * 'clip' -- clip to the range
+
+        'clip' mode means that all indices that are too large are replaced
+        by the index that addresses the last element along that axis. Note
+        that this disables indexing with negative numbers.
+
+    See Also
+    --------
+    putmask, place
+
+    Examples
+    --------
+    >>> a = np.arange(5)
+    >>> np.put(a, [0, 2], [-44, -55])
+    >>> a
+    array([-44,   1, -55,   3,   4])
+
+    >>> a = np.arange(5)
+    >>> np.put(a, 22, -5, mode='clip')
+    >>> a
+    array([ 0,  1,  2,  3, -5])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def swapaxes(a, axis1, axis2):
+    """
+    Interchange two axes of an array.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+    axis1 : int
+        First axis.
+    axis2 : int
+        Second axis.
+
+    Returns
+    -------
+    a_swapped : ndarray
+        If `a` is an ndarray, then a view of `a` is returned; otherwise
+        a new array is created.
+
+    Examples
+    --------
+    >>> x = np.array([[1,2,3]])
+    >>> np.swapaxes(x,0,1)
+    array([[1],
+           [2],
+           [3]])
+
+    >>> x = np.array([[[0,1],[2,3]],[[4,5],[6,7]]])
+    >>> x
+    array([[[0, 1],
+            [2, 3]],
+           [[4, 5],
+            [6, 7]]])
+
+    >>> np.swapaxes(x,0,2)
+    array([[[0, 4],
+            [2, 6]],
+           [[1, 5],
+            [3, 7]]])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def transpose(a, axes=None):
+    """
+    Permute the dimensions of an array.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+    axes : list of ints, optional
+        By default, reverse the dimensions, otherwise permute the axes
+        according to the values given.
+
+    Returns
+    -------
+    p : ndarray
+        `a` with its axes permuted.  A view is returned whenever
+        possible.
+
+    See Also
+    --------
+    rollaxis
+
+    Examples
+    --------
+    >>> x = np.arange(4).reshape((2,2))
+    >>> x
+    array([[0, 1],
+           [2, 3]])
+
+    >>> np.transpose(x)
+    array([[0, 2],
+           [1, 3]])
+
+    >>> x = np.ones((1, 2, 3))
+    >>> np.transpose(x, (1, 0, 2)).shape
+    (2, 1, 3)
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def sort(a, axis=-1, kind='quicksort', order=None):
+    """
+    Return a sorted copy of an array.
+
+    Parameters
+    ----------
+    a : array_like
+        Array to be sorted.
+    axis : int or None, optional
+        Axis along which to sort. If None, the array is flattened before
+        sorting. The default is -1, which sorts along the last axis.
+    kind : {'quicksort', 'mergesort', 'heapsort'}, optional
+        Sorting algorithm. Default is 'quicksort'.
+    order : list, optional
+        When `a` is a structured array, this argument specifies which fields
+        to compare first, second, and so on.  This list does not need to
+        include all of the fields.
+
+    Returns
+    -------
+    sorted_array : ndarray
+        Array of the same type and shape as `a`.
+
+    See Also
+    --------
+    ndarray.sort : Method to sort an array in-place.
+    argsort : Indirect sort.
+    lexsort : Indirect stable sort on multiple keys.
+    searchsorted : Find elements in a sorted array.
+
+    Notes
+    -----
+    The various sorting algorithms are characterized by their average speed,
+    worst case performance, work space size, and whether they are stable. A
+    stable sort keeps items with the same key in the same relative
+    order. The three available algorithms have the following
+    properties:
+
+    =========== ======= ============= ============ =======
+       kind      speed   worst case    work space  stable
+    =========== ======= ============= ============ =======
+    'quicksort'    1     O(n^2)            0          no
+    'mergesort'    2     O(n*log(n))      ~n/2        yes
+    'heapsort'     3     O(n*log(n))       0          no
+    =========== ======= ============= ============ =======
+
+    All the sort algorithms make temporary copies of the data when
+    sorting along any but the last axis.  Consequently, sorting along
+    the last axis is faster and uses less space than sorting along
+    any other axis.
+
+    The sort order for complex numbers is lexicographic. If both the real
+    and imaginary parts are non-nan then the order is determined by the
+    real parts except when they are equal, in which case the order is
+    determined by the imaginary parts.
+
+    Previous to numpy 1.4.0 sorting real and complex arrays containing nan
+    values led to undefined behaviour. In numpy versions >= 1.4.0 nan
+    values are sorted to the end. The extended sort order is:
+
+      * Real: [R, nan]
+      * Complex: [R + Rj, R + nanj, nan + Rj, nan + nanj]
+
+    where R is a non-nan real value. Complex values with the same nan
+    placements are sorted according to the non-nan part if it exists.
+    Non-nan values are sorted as before.
+
+    Examples
+    --------
+    >>> a = np.array([[1,4],[3,1]])
+    >>> np.sort(a)                # sort along the last axis
+    array([[1, 4],
+           [1, 3]])
+    >>> np.sort(a, axis=None)     # sort the flattened array
+    array([1, 1, 3, 4])
+    >>> np.sort(a, axis=0)        # sort along the first axis
+    array([[1, 1],
+           [3, 4]])
+
+    Use the `order` keyword to specify a field to use when sorting a
+    structured array:
+
+    >>> dtype = [('name', 'S10'), ('height', float), ('age', int)]
+    >>> values = [('Arthur', 1.8, 41), ('Lancelot', 1.9, 38),
+    ...           ('Galahad', 1.7, 38)]
+    >>> a = np.array(values, dtype=dtype)       # create a structured array
+    >>> np.sort(a, order='height')                        # doctest: +SKIP
+    array([('Galahad', 1.7, 38), ('Arthur', 1.8, 41),
+           ('Lancelot', 1.8999999999999999, 38)],
+          dtype=[('name', '|S10'), ('height', '<f8'), ('age', '<i4')])
+
+    Sort by age, then height if ages are equal:
+
+    >>> np.sort(a, order=['age', 'height'])               # doctest: +SKIP
+    array([('Galahad', 1.7, 38), ('Lancelot', 1.8999999999999999, 38),
+           ('Arthur', 1.8, 41)],
+          dtype=[('name', '|S10'), ('height', '<f8'), ('age', '<i4')])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def argsort(a, axis=-1, kind='quicksort', order=None):
+    """
+    Returns the indices that would sort an array.
+
+    Perform an indirect sort along the given axis using the algorithm specified
+    by the `kind` keyword. It returns an array of indices of the same shape as
+    `a` that index data along the given axis in sorted order.
+
+    Parameters
+    ----------
+    a : array_like
+        Array to sort.
+    axis : int or None, optional
+        Axis along which to sort.  The default is -1 (the last axis). If None,
+        the flattened array is used.
+    kind : {'quicksort', 'mergesort', 'heapsort'}, optional
+        Sorting algorithm.
+    order : list, optional
+        When `a` is an array with fields defined, this argument specifies
+        which fields to compare first, second, etc.  Not all fields need be
+        specified.
+
+    Returns
+    -------
+    index_array : ndarray, int
+        Array of indices that sort `a` along the specified axis.
+        In other words, ``a[index_array]`` yields a sorted `a`.
+
+    See Also
+    --------
+    sort : Describes sorting algorithms used.
+    lexsort : Indirect stable sort with multiple keys.
+    ndarray.sort : Inplace sort.
+
+    Notes
+    -----
+    See `sort` for notes on the different sorting algorithms.
+
+    As of NumPy 1.4.0 `argsort` works with real/complex arrays containing
+    nan values. The enhanced sort order is documented in `sort`.
+
+    Examples
+    --------
+    One dimensional array:
+
+    >>> x = np.array([3, 1, 2])
+    >>> np.argsort(x)
+    array([1, 2, 0])
+
+    Two-dimensional array:
+
+    >>> x = np.array([[0, 3], [2, 2]])
+    >>> x
+    array([[0, 3],
+           [2, 2]])
+
+    >>> np.argsort(x, axis=0)
+    array([[0, 1],
+           [1, 0]])
+
+    >>> np.argsort(x, axis=1)
+    array([[0, 1],
+           [0, 1]])
+
+    Sorting with keys:
+
+    >>> x = np.array([(1, 0), (0, 1)], dtype=[('x', '<i4'), ('y', '<i4')])
+    >>> x
+    array([(1, 0), (0, 1)],
+          dtype=[('x', '<i4'), ('y', '<i4')])
+
+    >>> np.argsort(x, order=('x','y'))
+    array([1, 0])
+
+    >>> np.argsort(x, order=('y','x'))
+    array([0, 1])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def argmax(a, axis=None):
+    """
+    Indices of the maximum values along an axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+    axis : int, optional
+        By default, the index is into the flattened array, otherwise
+        along the specified axis.
+
+    Returns
+    -------
+    index_array : ndarray of ints
+        Array of indices into the array. It has the same shape as `a.shape`
+        with the dimension along `axis` removed.
+
+    See Also
+    --------
+    ndarray.argmax, argmin
+    amax : The maximum value along a given axis.
+    unravel_index : Convert a flat index into an index tuple.
+
+    Notes
+    -----
+    In case of multiple occurrences of the maximum values, the indices
+    corresponding to the first occurrence are returned.
+
+    Examples
+    --------
+    >>> a = np.arange(6).reshape(2,3)
+    >>> a
+    array([[0, 1, 2],
+           [3, 4, 5]])
+    >>> np.argmax(a)
+    5
+    >>> np.argmax(a, axis=0)
+    array([1, 1, 1])
+    >>> np.argmax(a, axis=1)
+    array([2, 2])
+
+    >>> b = np.arange(6)
+    >>> b[1] = 5
+    >>> b
+    array([0, 5, 2, 3, 4, 5])
+    >>> np.argmax(b) # Only the first occurrence is returned.
+    1
+
+    """
+    if not hasattr(a, 'argmax'):
+        a = numpypy.array(a)
+    return a.argmax()
+
+
+def argmin(a, axis=None):
+    """
+    Return the indices of the minimum values along an axis.
+
+    See Also
+    --------
+    argmax : Similar function.  Please refer to `numpy.argmax` for detailed
+        documentation.
+
+    """
+    if not hasattr(a, 'argmin'):
+        a = numpypy.array(a)
+    return a.argmin()
+
+
+def searchsorted(a, v, side='left'):
+    """
+    Find indices where elements should be inserted to maintain order.
+
+    Find the indices into a sorted array `a` such that, if the corresponding
+    elements in `v` were inserted before the indices, the order of `a` would
+    be preserved.
+
+    Parameters
+    ----------
+    a : 1-D array_like
+        Input array, sorted in ascending order.
+    v : array_like
+        Values to insert into `a`.
+    side : {'left', 'right'}, optional
+        If 'left', the index of the first suitable location found is given.  If
+        'right', return the last such index.  If there is no suitable
+        index, return either 0 or N (where N is the length of `a`).
+
+    Returns
+    -------
+    indices : array of ints
+        Array of insertion points with the same shape as `v`.
+
+    See Also
+    --------
+    sort : Return a sorted copy of an array.
+    histogram : Produce histogram from 1-D data.
+
+    Notes
+    -----
+    Binary search is used to find the required insertion points.
+
+    As of Numpy 1.4.0 `searchsorted` works with real/complex arrays containing
+    `nan` values. The enhanced sort order is documented in `sort`.
+
+    Examples
+    --------
+    >>> np.searchsorted([1,2,3,4,5], 3)
+    2
+    >>> np.searchsorted([1,2,3,4,5], 3, side='right')
+    3
+    >>> np.searchsorted([1,2,3,4,5], [-10, 10, 2, 3])
+    array([0, 5, 1, 2])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def resize(a, new_shape):
+    """
+    Return a new array with the specified shape.
+
+    If the new array is larger than the original array, then the new
+    array is filled with repeated copies of `a`.  Note that this behavior
+    is different from a.resize(new_shape) which fills with zeros instead
+    of repeated copies of `a`.
+
+    Parameters
+    ----------
+    a : array_like
+        Array to be resized.
+
+    new_shape : int or tuple of int
+        Shape of resized array.
+
+    Returns
+    -------
+    reshaped_array : ndarray
+        The new array is formed from the data in the old array, repeated
+        if necessary to fill out the required number of elements.  The
+        data are repeated in the order that they are stored in memory.
+
+    See Also
+    --------
+    ndarray.resize : resize an array in-place.
+
+    Examples
+    --------
+    >>> a=np.array([[0,1],[2,3]])
+    >>> np.resize(a,(1,4))
+    array([[0, 1, 2, 3]])
+    >>> np.resize(a,(2,4))
+    array([[0, 1, 2, 3],
+           [0, 1, 2, 3]])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def squeeze(a):
+    """
+    Remove single-dimensional entries from the shape of an array.
+
+    Parameters
+    ----------
+    a : array_like
+        Input data.
+
+    Returns
+    -------
+    squeezed : ndarray
+        The input array, but with with all dimensions of length 1
+        removed.  Whenever possible, a view on `a` is returned.
+
+    Examples
+    --------
+    >>> x = np.array([[[0], [1], [2]]])
+    >>> x.shape
+    (1, 3, 1)
+    >>> np.squeeze(x).shape
+    (3,)
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def diagonal(a, offset=0, axis1=0, axis2=1):
+    """
+    Return specified diagonals.
+
+    If `a` is 2-D, returns the diagonal of `a` with the given offset,
+    i.e., the collection of elements of the form ``a[i, i+offset]``.  If
+    `a` has more than two dimensions, then the axes specified by `axis1`
+    and `axis2` are used to determine the 2-D sub-array whose diagonal is
+    returned.  The shape of the resulting array can be determined by
+    removing `axis1` and `axis2` and appending an index to the right equal
+    to the size of the resulting diagonals.
+
+    Parameters
+    ----------
+    a : array_like
+        Array from which the diagonals are taken.
+    offset : int, optional
+        Offset of the diagonal from the main diagonal.  Can be positive or
+        negative.  Defaults to main diagonal (0).
+    axis1 : int, optional
+        Axis to be used as the first axis of the 2-D sub-arrays from which
+        the diagonals should be taken.  Defaults to first axis (0).
+    axis2 : int, optional
+        Axis to be used as the second axis of the 2-D sub-arrays from
+        which the diagonals should be taken. Defaults to second axis (1).
+
+    Returns
+    -------
+    array_of_diagonals : ndarray
+        If `a` is 2-D, a 1-D array containing the diagonal is returned.
+        If the dimension of `a` is larger, then an array of diagonals is
+        returned, "packed" from left-most dimension to right-most (e.g.,
+        if `a` is 3-D, then the diagonals are "packed" along rows).
+
+    Raises
+    ------
+    ValueError
+        If the dimension of `a` is less than 2.
+
+    See Also
+    --------
+    diag : MATLAB work-a-like for 1-D and 2-D arrays.
+    diagflat : Create diagonal arrays.
+    trace : Sum along diagonals.
+
+    Examples
+    --------
+    >>> a = np.arange(4).reshape(2,2)
+    >>> a
+    array([[0, 1],
+           [2, 3]])
+    >>> a.diagonal()
+    array([0, 3])
+    >>> a.diagonal(1)
+    array([1])
+
+    A 3-D example:
+
+    >>> a = np.arange(8).reshape(2,2,2); a
+    array([[[0, 1],
+            [2, 3]],
+           [[4, 5],
+            [6, 7]]])
+    >>> a.diagonal(0, # Main diagonals of two arrays created by skipping
+    ...            0, # across the outer(left)-most axis last and
+    ...            1) # the "middle" (row) axis first.
+    array([[0, 6],
+           [1, 7]])
+
+    The sub-arrays whose main diagonals we just obtained; note that each
+    corresponds to fixing the right-most (column) axis, and that the
+    diagonals are "packed" in rows.
+
+    >>> a[:,:,0] # main diagonal is [0 6]
+    array([[0, 2],
+           [4, 6]])
+    >>> a[:,:,1] # main diagonal is [1 7]
+    array([[1, 3],
+           [5, 7]])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def trace(a, offset=0, axis1=0, axis2=1, dtype=None, out=None):
+    """
+    Return the sum along diagonals of the array.
+
+    If `a` is 2-D, the sum along its diagonal with the given offset
+    is returned, i.e., the sum of elements ``a[i,i+offset]`` for all i.
+
+    If `a` has more than two dimensions, then the axes specified by axis1 and
+    axis2 are used to determine the 2-D sub-arrays whose traces are returned.
+    The shape of the resulting array is the same as that of `a` with `axis1`
+    and `axis2` removed.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array, from which the diagonals are taken.
+    offset : int, optional
+        Offset of the diagonal from the main diagonal. Can be both positive
+        and negative. Defaults to 0.
+    axis1, axis2 : int, optional
+        Axes to be used as the first and second axis of the 2-D sub-arrays
+        from which the diagonals should be taken. Defaults are the first two
+        axes of `a`.
+    dtype : dtype, optional
+        Determines the data-type of the returned array and of the accumulator
+        where the elements are summed. If dtype has the value None and `a` is
+        of integer type of precision less than the default integer
+        precision, then the default integer precision is used. Otherwise,
+        the precision is the same as that of `a`.
+    out : ndarray, optional
+        Array into which the output is placed. Its type is preserved and
+        it must be of the right shape to hold the output.
+
+    Returns
+    -------
+    sum_along_diagonals : ndarray
+        If `a` is 2-D, the sum along the diagonal is returned.  If `a` has
+        larger dimensions, then an array of sums along diagonals is returned.
+
+    See Also
+    --------
+    diag, diagonal, diagflat
+
+    Examples
+    --------
+    >>> np.trace(np.eye(3))
+    3.0
+    >>> a = np.arange(8).reshape((2,2,2))
+    >>> np.trace(a)
+    array([6, 8])
+
+    >>> a = np.arange(24).reshape((2,2,2,3))
+    >>> np.trace(a).shape
+    (2, 3)
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+def ravel(a, order='C'):
+    """
+    Return a flattened array.
+
+    A 1-D array, containing the elements of the input, is returned.  A copy is
+    made only if needed.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.  The elements in ``a`` are read in the order specified by
+        `order`, and packed as a 1-D array.
+    order : {'C','F', 'A', 'K'}, optional
+        The elements of ``a`` are read in this order. 'C' means to view
+        the elements in C (row-major) order. 'F' means to view the elements
+        in Fortran (column-major) order. 'A' means to view the elements
+        in 'F' order if a is Fortran contiguous, 'C' order otherwise.
+        'K' means to view the elements in the order they occur in memory,
+        except for reversing the data when strides are negative.
+        By default, 'C' order is used.
+
+    Returns
+    -------
+    1d_array : ndarray
+        Output of the same dtype as `a`, and of shape ``(a.size(),)``.
+
+    See Also
+    --------
+    ndarray.flat : 1-D iterator over an array.
+    ndarray.flatten : 1-D array copy of the elements of an array
+                      in row-major order.
+
+    Notes
+    -----
+    In row-major order, the row index varies the slowest, and the column
+    index the quickest.  This can be generalized to multiple dimensions,
+    where row-major order implies that the index along the first axis
+    varies slowest, and the index along the last quickest.  The opposite holds
+    for Fortran-, or column-major, mode.
+
+    Examples
+    --------
+    It is equivalent to ``reshape(-1, order=order)``.
+
+    >>> x = np.array([[1, 2, 3], [4, 5, 6]])
+    >>> print np.ravel(x)
+    [1 2 3 4 5 6]
+
+    >>> print x.reshape(-1)
+    [1 2 3 4 5 6]
+
+    >>> print np.ravel(x, order='F')
+    [1 4 2 5 3 6]
+
+    When ``order`` is 'A', it will preserve the array's 'C' or 'F' ordering:
+
+    >>> print np.ravel(x.T)
+    [1 4 2 5 3 6]
+    >>> print np.ravel(x.T, order='A')
+    [1 2 3 4 5 6]
+
+    When ``order`` is 'K', it will preserve orderings that are neither 'C'
+    nor 'F', but won't reverse axes:
+
+    >>> a = np.arange(3)[::-1]; a
+    array([2, 1, 0])
+    >>> a.ravel(order='C')
+    array([2, 1, 0])
+    >>> a.ravel(order='K')
+    array([2, 1, 0])
+
+    >>> a = np.arange(12).reshape(2,3,2).swapaxes(1,2); a
+    array([[[ 0,  2,  4],
+            [ 1,  3,  5]],
+           [[ 6,  8, 10],
+            [ 7,  9, 11]]])
+    >>> a.ravel(order='C')
+    array([ 0,  2,  4,  1,  3,  5,  6,  8, 10,  7,  9, 11])
+    >>> a.ravel(order='K')
+    array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def nonzero(a):
+    """
+    Return the indices of the elements that are non-zero.
+
+    Returns a tuple of arrays, one for each dimension of `a`, containing
+    the indices of the non-zero elements in that dimension. The
+    corresponding non-zero values can be obtained with::
+
+        a[nonzero(a)]
+
+    To group the indices by element, rather than dimension, use::
+
+        transpose(nonzero(a))
+
+    The result of this is always a 2-D array, with a row for
+    each non-zero element.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+
+    Returns
+    -------
+    tuple_of_arrays : tuple
+        Indices of elements that are non-zero.
+
+    See Also
+    --------
+    flatnonzero :
+        Return indices that are non-zero in the flattened version of the input
+        array.
+    ndarray.nonzero :
+        Equivalent ndarray method.
+    count_nonzero :
+        Counts the number of non-zero elements in the input array.
+
+    Examples
+    --------
+    >>> x = np.eye(3)
+    >>> x
+    array([[ 1.,  0.,  0.],
+           [ 0.,  1.,  0.],
+           [ 0.,  0.,  1.]])
+    >>> np.nonzero(x)
+    (array([0, 1, 2]), array([0, 1, 2]))
+
+    >>> x[np.nonzero(x)]
+    array([ 1.,  1.,  1.])
+    >>> np.transpose(np.nonzero(x))
+    array([[0, 0],
+           [1, 1],
+           [2, 2]])
+
+    A common use for ``nonzero`` is to find the indices of an array, where
+    a condition is True.  Given an array `a`, the condition `a` > 3 is a
+    boolean array and since False is interpreted as 0, np.nonzero(a > 3)
+    yields the indices of the `a` where the condition is true.
+
+    >>> a = np.array([[1,2,3],[4,5,6],[7,8,9]])
+    >>> a > 3
+    array([[False, False, False],
+           [ True,  True,  True],
+           [ True,  True,  True]], dtype=bool)
+    >>> np.nonzero(a > 3)
+    (array([1, 1, 1, 2, 2, 2]), array([0, 1, 2, 0, 1, 2]))
+
+    The ``nonzero`` method of the boolean array can also be called.
+
+    >>> (a > 3).nonzero()
+    (array([1, 1, 1, 2, 2, 2]), array([0, 1, 2, 0, 1, 2]))
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def shape(a):
+    """
+    Return the shape of an array.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+
+    Returns
+    -------
+    shape : tuple of ints
+        The elements of the shape tuple give the lengths of the
+        corresponding array dimensions.
+
+    See Also
+    --------
+    alen
+    ndarray.shape : Equivalent array method.
+
+    Examples
+    --------
+    >>> np.shape(np.eye(3))
+    (3, 3)
+    >>> np.shape([[1, 2]])
+    (1, 2)
+    >>> np.shape([0])
+    (1,)
+    >>> np.shape(0)
+    ()
+
+    >>> a = np.array([(1, 2), (3, 4)], dtype=[('x', 'i4'), ('y', 'i4')])
+    >>> np.shape(a)
+    (2,)
+    >>> a.shape
+    (2,)
+
+    """
+    if not hasattr(a, 'shape'):
+        a = numpypy.array(a)
+    return a.shape
+
+
+def compress(condition, a, axis=None, out=None):
+    """
+    Return selected slices of an array along given axis.
+
+    When working along a given axis, a slice along that axis is returned in
+    `output` for each index where `condition` evaluates to True. When
+    working on a 1-D array, `compress` is equivalent to `extract`.
+
+    Parameters
+    ----------
+    condition : 1-D array of bools
+        Array that selects which entries to return. If len(condition)
+        is less than the size of `a` along the given axis, then output is
+        truncated to the length of the condition array.
+    a : array_like
+        Array from which to extract a part.
+    axis : int, optional
+        Axis along which to take slices. If None (default), work on the
+        flattened array.
+    out : ndarray, optional
+        Output array.  Its type is preserved and it must be of the right
+        shape to hold the output.
+
+    Returns
+    -------
+    compressed_array : ndarray
+        A copy of `a` without the slices along axis for which `condition`
+        is false.
+
+    See Also
+    --------
+    take, choose, diag, diagonal, select
+    ndarray.compress : Equivalent method.
+    numpy.doc.ufuncs : Section "Output arguments"
+
+    Examples
+    --------
+    >>> a = np.array([[1, 2], [3, 4], [5, 6]])
+    >>> a
+    array([[1, 2],
+           [3, 4],
+           [5, 6]])
+    >>> np.compress([0, 1], a, axis=0)
+    array([[3, 4]])
+    >>> np.compress([False, True, True], a, axis=0)
+    array([[3, 4],
+           [5, 6]])
+    >>> np.compress([False, True], a, axis=1)
+    array([[2],
+           [4],
+           [6]])
+
+    Working on the flattened array does not return slices along an axis but
+    selects elements.
+
+    >>> np.compress([False, True], a)
+    array([2])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def clip(a, a_min, a_max, out=None):
+    """
+    Clip (limit) the values in an array.
+
+    Given an interval, values outside the interval are clipped to
+    the interval edges.  For example, if an interval of ``[0, 1]``
+    is specified, values smaller than 0 become 0, and values larger
+    than 1 become 1.
+
+    Parameters
+    ----------
+    a : array_like
+        Array containing elements to clip.
+    a_min : scalar or array_like
+        Minimum value.
+    a_max : scalar or array_like
+        Maximum value.  If `a_min` or `a_max` are array_like, then they will
+        be broadcasted to the shape of `a`.
+    out : ndarray, optional
+        The results will be placed in this array. It may be the input
+        array for in-place clipping.  `out` must be of the right shape
+        to hold the output.  Its type is preserved.
+
+    Returns
+    -------
+    clipped_array : ndarray
+        An array with the elements of `a`, but where values
+        < `a_min` are replaced with `a_min`, and those > `a_max`
+        with `a_max`.
+
+    See Also
+    --------
+    numpy.doc.ufuncs : Section "Output arguments"
+
+    Examples
+    --------
+    >>> a = np.arange(10)
+    >>> np.clip(a, 1, 8)
+    array([1, 1, 2, 3, 4, 5, 6, 7, 8, 8])
+    >>> a
+    array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
+    >>> np.clip(a, 3, 6, out=a)
+    array([3, 3, 3, 3, 4, 5, 6, 6, 6, 6])
+    >>> a = np.arange(10)
+    >>> a
+    array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
+    >>> np.clip(a, [3,4,1,1,1,4,4,4,4,4], 8)
+    array([3, 4, 2, 3, 4, 5, 6, 7, 8, 8])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def sum(a, axis=None, dtype=None, out=None):
+    """
+    Sum of array elements over a given axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Elements to sum.
+    axis : integer, optional
+        Axis over which the sum is taken. By default `axis` is None,
+        and all elements are summed.
+    dtype : dtype, optional
+        The type of the returned array and of the accumulator in which
+        the elements are summed.  By default, the dtype of `a` is used.
+        An exception is when `a` has an integer type with less precision
+        than the default platform integer.  In that case, the default
+        platform integer is used instead.
+    out : ndarray, optional
+        Array into which the output is placed.  By default, a new array is
+        created.  If `out` is given, it must be of the appropriate shape
+        (the shape of `a` with `axis` removed, i.e.,
+        ``numpy.delete(a.shape, axis)``).  Its type is preserved. See
+        `doc.ufuncs` (Section "Output arguments") for more details.
+
+    Returns
+    -------
+    sum_along_axis : ndarray
+        An array with the same shape as `a`, with the specified
+        axis removed.   If `a` is a 0-d array, or if `axis` is None, a scalar
+        is returned.  If an output array is specified, a reference to
+        `out` is returned.
+
+    See Also
+    --------
+    ndarray.sum : Equivalent method.
+
+    cumsum : Cumulative sum of array elements.
+
+    trapz : Integration of array values using the composite trapezoidal rule.
+
+    mean, average
+
+    Notes
+    -----
+    Arithmetic is modular when using integer types, and no error is
+    raised on overflow.
+
+    Examples
+    --------
+    >>> np.sum([0.5, 1.5])
+    2.0
+    >>> np.sum([0.5, 0.7, 0.2, 1.5], dtype=np.int32)
+    1
+    >>> np.sum([[0, 1], [0, 5]])
+    6
+    >>> np.sum([[0, 1], [0, 5]], axis=0)
+    array([0, 6])
+    >>> np.sum([[0, 1], [0, 5]], axis=1)
+    array([1, 5])
+
+    If the accumulator is too small, overflow occurs:
+
+    >>> np.ones(128, dtype=np.int8).sum(dtype=np.int8)
+    -128
+
+    """
+    if not hasattr(a, "sum"):
+        a = numpypy.array(a)
+    return a.sum()
+
+
+def product (a, axis=None, dtype=None, out=None):
+    """
+    Return the product of array elements over a given axis.
+
+    See Also
+    --------
+    prod : equivalent function; see for details.
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def sometrue(a, axis=None, out=None):
+    """
+    Check whether some values are true.
+
+    Refer to `any` for full documentation.
+
+    See Also
+    --------
+    any : equivalent function
+
+    """
+    if not hasattr(a, 'any'):
+        a = numpypy.array(a)
+    return a.any()
+
+
+def alltrue (a, axis=None, out=None):
+    """
+    Check if all elements of input array are true.
+
+    See Also
+    --------
+    numpy.all : Equivalent function; see for details.
+
+    """
+    if not hasattr(a, 'all'):
+        a = numpypy.array(a)
+    return a.all()
+
+def any(a,axis=None, out=None):
+    """
+    Test whether any array element along a given axis evaluates to True.
+
+    Returns single boolean unless `axis` is not ``None``
+
+    Parameters
+    ----------
+    a : array_like
+        Input array or object that can be converted to an array.
+    axis : int, optional
+        Axis along which a logical OR is performed.  The default
+        (`axis` = `None`) is to perform a logical OR over a flattened
+        input array. `axis` may be negative, in which case it counts
+        from the last to the first axis.
+    out : ndarray, optional
+        Alternate output array in which to place the result.  It must have
+        the same shape as the expected output and its type is preserved
+        (e.g., if it is of type float, then it will remain so, returning
+        1.0 for True and 0.0 for False, regardless of the type of `a`).
+        See `doc.ufuncs` (Section "Output arguments") for details.
+
+    Returns
+    -------
+    any : bool or ndarray
+        A new boolean or `ndarray` is returned unless `out` is specified,
+        in which case a reference to `out` is returned.
+
+    See Also
+    --------
+    ndarray.any : equivalent method
+
+    all : Test whether all elements along a given axis evaluate to True.
+
+    Notes
+    -----
+    Not a Number (NaN), positive infinity and negative infinity evaluate
+    to `True` because these are not equal to zero.
+
+    Examples
+    --------
+    >>> np.any([[True, False], [True, True]])
+    True
+
+    >>> np.any([[True, False], [False, False]], axis=0)
+    array([ True, False], dtype=bool)
+
+    >>> np.any([-1, 0, 5])
+    True
+
+    >>> np.any(np.nan)
+    True
+
+    >>> o=np.array([False])
+    >>> z=np.any([-1, 4, 5], out=o)
+    >>> z, o
+    (array([ True], dtype=bool), array([ True], dtype=bool))
+    >>> # Check now that z is a reference to o
+    >>> z is o
+    True
+    >>> id(z), id(o) # identity of z and o              # doctest: +SKIP
+    (191614240, 191614240)
+
+    """
+    if not hasattr(a, 'any'):
+        a = numpypy.array(a)
+    return a.any()
+
+
+def all(a,axis=None, out=None):
+    """
+    Test whether all array elements along a given axis evaluate to True.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array or object that can be converted to an array.
+    axis : int, optional
+        Axis along which a logical AND is performed.
+        The default (`axis` = `None`) is to perform a logical AND
+        over a flattened input array.  `axis` may be negative, in which
+        case it counts from the last to the first axis.
+    out : ndarray, optional
+        Alternate output array in which to place the result.
+        It must have the same shape as the expected output and its
+        type is preserved (e.g., if ``dtype(out)`` is float, the result
+        will consist of 0.0's and 1.0's).  See `doc.ufuncs` (Section
+        "Output arguments") for more details.
+
+    Returns
+    -------
+    all : ndarray, bool
+        A new boolean or array is returned unless `out` is specified,
+        in which case a reference to `out` is returned.
+
+    See Also
+    --------
+    ndarray.all : equivalent method
+
+    any : Test whether any element along a given axis evaluates to True.
+
+    Notes
+    -----
+    Not a Number (NaN), positive infinity and negative infinity
+    evaluate to `True` because these are not equal to zero.
+
+    Examples
+    --------
+    >>> np.all([[True,False],[True,True]])
+    False
+
+    >>> np.all([[True,False],[True,True]], axis=0)
+    array([ True, False], dtype=bool)
+
+    >>> np.all([-1, 4, 5])
+    True
+
+    >>> np.all([1.0, np.nan])
+    True
+
+    >>> o=np.array([False])
+    >>> z=np.all([-1, 4, 5], out=o)
+    >>> id(z), id(o), z                             # doctest: +SKIP
+    (28293632, 28293632, array([ True], dtype=bool))
+
+    """
+    if not hasattr(a, 'all'):
+        a = numpypy.array(a)
+    return a.all()
+
+
+def cumsum (a, axis=None, dtype=None, out=None):
+    """
+    Return the cumulative sum of the elements along a given axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+    axis : int, optional
+        Axis along which the cumulative sum is computed. The default
+        (None) is to compute the cumsum over the flattened array.
+    dtype : dtype, optional
+        Type of the returned array and of the accumulator in which the
+        elements are summed.  If `dtype` is not specified, it defaults
+        to the dtype of `a`, unless `a` has an integer dtype with a
+        precision less than that of the default platform integer.  In
+        that case, the default platform integer is used.
+    out : ndarray, optional
+        Alternative output array in which to place the result. It must
+        have the same shape and buffer length as the expected output
+        but the type will be cast if necessary. See `doc.ufuncs`
+        (Section "Output arguments") for more details.
+
+    Returns
+    -------
+    cumsum_along_axis : ndarray.
+        A new array holding the result is returned unless `out` is
+        specified, in which case a reference to `out` is returned. The
+        result has the same size as `a`, and the same shape as `a` if
+        `axis` is not None or `a` is a 1-d array.
+
+
+    See Also
+    --------
+    sum : Sum array elements.
+
+    trapz : Integration of array values using the composite trapezoidal rule.
+
+    Notes
+    -----
+    Arithmetic is modular when using integer types, and no error is
+    raised on overflow.
+
+    Examples
+    --------
+    >>> a = np.array([[1,2,3], [4,5,6]])
+    >>> a
+    array([[1, 2, 3],
+           [4, 5, 6]])
+    >>> np.cumsum(a)
+    array([ 1,  3,  6, 10, 15, 21])
+    >>> np.cumsum(a, dtype=float)     # specifies type of output value(s)
+    array([  1.,   3.,   6.,  10.,  15.,  21.])
+
+    >>> np.cumsum(a,axis=0)      # sum over rows for each of the 3 columns
+    array([[1, 2, 3],
+           [5, 7, 9]])
+    >>> np.cumsum(a,axis=1)      # sum over columns for each of the 2 rows
+    array([[ 1,  3,  6],
+           [ 4,  9, 15]])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def cumproduct(a, axis=None, dtype=None, out=None):
+    """
+    Return the cumulative product over the given axis.
+
+
+    See Also
+    --------
+    cumprod : equivalent function; see for details.
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def ptp(a, axis=None, out=None):
+    """
+    Range of values (maximum - minimum) along an axis.
+
+    The name of the function comes from the acronym for 'peak to peak'.
+
+    Parameters
+    ----------
+    a : array_like
+        Input values.
+    axis : int, optional
+        Axis along which to find the peaks.  By default, flatten the
+        array.
+    out : array_like
+        Alternative output array in which to place the result. It must
+        have the same shape and buffer length as the expected output,
+        but the type of the output values will be cast if necessary.
+
+    Returns
+    -------
+    ptp : ndarray
+        A new array holding the result, unless `out` was
+        specified, in which case a reference to `out` is returned.
+
+    Examples
+    --------
+    >>> x = np.arange(4).reshape((2,2))
+    >>> x
+    array([[0, 1],
+           [2, 3]])
+
+    >>> np.ptp(x, axis=0)
+    array([2, 2])
+
+    >>> np.ptp(x, axis=1)
+    array([1, 1])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def amax(a, axis=None, out=None):
+    """
+    Return the maximum of an array or maximum along an axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Input data.
+    axis : int, optional
+        Axis along which to operate.  By default flattened input is used.
+    out : ndarray, optional
+        Alternate output array in which to place the result.  Must be of
+        the same shape and buffer length as the expected output.  See
+        `doc.ufuncs` (Section "Output arguments") for more details.
+
+    Returns
+    -------
+    amax : ndarray or scalar
+        Maximum of `a`. If `axis` is None, the result is a scalar value.
+        If `axis` is given, the result is an array of dimension
+        ``a.ndim - 1``.
+
+    See Also
+    --------
+    nanmax : NaN values are ignored instead of being propagated.
+    fmax : same behavior as the C99 fmax function.
+    argmax : indices of the maximum values.
+
+    Notes
+    -----
+    NaN values are propagated, that is if at least one item is NaN, the
+    corresponding max value will be NaN as well.  To ignore NaN values
+    (MATLAB behavior), please use nanmax.
+
+    Examples
+    --------
+    >>> a = np.arange(4).reshape((2,2))
+    >>> a
+    array([[0, 1],
+           [2, 3]])
+    >>> np.amax(a)
+    3
+    >>> np.amax(a, axis=0)
+    array([2, 3])
+    >>> np.amax(a, axis=1)
+    array([1, 3])
+
+    >>> b = np.arange(5, dtype=np.float)
+    >>> b[2] = np.NaN
+    >>> np.amax(b)
+    nan
+    >>> np.nanmax(b)
+    4.0
+
+    """
+    if not hasattr(a, "max"):
+        a = numpypy.array(a)
+    return a.max()
+
+
+def amin(a, axis=None, out=None):
+    """
+    Return the minimum of an array or minimum along an axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Input data.
+    axis : int, optional
+        Axis along which to operate.  By default a flattened input is used.
+    out : ndarray, optional
+        Alternative output array in which to place the result.  Must
+        be of the same shape and buffer length as the expected output.
+        See `doc.ufuncs` (Section "Output arguments") for more details.
+
+    Returns
+    -------
+    amin : ndarray
+        A new array or a scalar array with the result.
+
+    See Also
+    --------
+    nanmin: nan values are ignored instead of being propagated
+    fmin: same behavior as the C99 fmin function
+    argmin: Return the indices of the minimum values.
+
+    amax, nanmax, fmax
+
+    Notes
+    -----
+    NaN values are propagated, that is if at least one item is nan, the
+    corresponding min value will be nan as well. To ignore NaN values (matlab
+    behavior), please use nanmin.
+
+    Examples
+    --------
+    >>> a = np.arange(4).reshape((2,2))
+    >>> a
+    array([[0, 1],
+           [2, 3]])
+    >>> np.amin(a)           # Minimum of the flattened array
+    0
+    >>> np.amin(a, axis=0)         # Minima along the first axis
+    array([0, 1])
+    >>> np.amin(a, axis=1)         # Minima along the second axis
+    array([0, 2])
+
+    >>> b = np.arange(5, dtype=np.float)
+    >>> b[2] = np.NaN
+    >>> np.amin(b)
+    nan
+    >>> np.nanmin(b)
+    0.0
+
+    """
+    # amin() is equivalent to min()
+    if not hasattr(a, 'min'):
+        a = numpypy.array(a)
+    return a.min()
+
+def alen(a):
+    """
+    Return the length of the first dimension of the input array.
+
+    Parameters
+    ----------
+    a : array_like
+       Input array.
+
+    Returns
+    -------
+    l : int
+       Length of the first dimension of `a`.
+
+    See Also
+    --------
+    shape, size
+
+    Examples
+    --------
+    >>> a = np.zeros((7,4,5))
+    >>> a.shape[0]
+    7
+    >>> np.alen(a)
+    7
+
+    """
+    if not hasattr(a, 'shape'):
+        a = numpypy.array(a)
+    return a.shape[0]
+
+
+def prod(a, axis=None, dtype=None, out=None):
+    """
+    Return the product of array elements over a given axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Input data.
+    axis : int, optional
+        Axis over which the product is taken.  By default, the product
+        of all elements is calculated.
+    dtype : data-type, optional
+        The data-type of the returned array, as well as of the accumulator
+        in which the elements are multiplied.  By default, if `a` is of
+        integer type, `dtype` is the default platform integer. (Note: if
+        the type of `a` is unsigned, then so is `dtype`.)  Otherwise,
+        the dtype is the same as that of `a`.
+    out : ndarray, optional
+        Alternative output array in which to place the result. It must have
+        the same shape as the expected output, but the type of the
+        output values will be cast if necessary.
+
+    Returns
+    -------
+    product_along_axis : ndarray, see `dtype` parameter above.
+        An array shaped as `a` but with the specified axis removed.
+        Returns a reference to `out` if specified.
+
+    See Also
+    --------
+    ndarray.prod : equivalent method
+    numpy.doc.ufuncs : Section "Output arguments"
+
+    Notes
+    -----
+    Arithmetic is modular when using integer types, and no error is
+    raised on overflow.  That means that, on a 32-bit platform:
+
+    >>> x = np.array([536870910, 536870910, 536870910, 536870910])
+    >>> np.prod(x) #random
+    16
+
+    Examples
+    --------
+    By default, calculate the product of all elements:
+
+    >>> np.prod([1.,2.])
+    2.0
+
+    Even when the input array is two-dimensional:
+
+    >>> np.prod([[1.,2.],[3.,4.]])
+    24.0
+
+    But we can also specify the axis over which to multiply:
+
+    >>> np.prod([[1.,2.],[3.,4.]], axis=1)
+    array([  2.,  12.])
+
+    If the type of `x` is unsigned, then the output type is
+    the unsigned platform integer:
+
+    >>> x = np.array([1, 2, 3], dtype=np.uint8)
+    >>> np.prod(x).dtype == np.uint
+    True
+
+    If `x` is of a signed integer type, then the output type
+    is the default platform integer:
+
+    >>> x = np.array([1, 2, 3], dtype=np.int8)
+    >>> np.prod(x).dtype == np.int
+    True
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def cumprod(a, axis=None, dtype=None, out=None):
+    """
+    Return the cumulative product of elements along a given axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.
+    axis : int, optional
+        Axis along which the cumulative product is computed.  By default
+        the input is flattened.
+    dtype : dtype, optional
+        Type of the returned array, as well as of the accumulator in which
+        the elements are multiplied.  If *dtype* is not specified, it
+        defaults to the dtype of `a`, unless `a` has an integer dtype with
+        a precision less than that of the default platform integer.  In
+        that case, the default platform integer is used instead.
+    out : ndarray, optional
+        Alternative output array in which to place the result. It must
+        have the same shape and buffer length as the expected output
+        but the type of the resulting values will be cast if necessary.
+
+    Returns
+    -------
+    cumprod : ndarray
+        A new array holding the result is returned unless `out` is
+        specified, in which case a reference to out is returned.
+
+    See Also
+    --------
+    numpy.doc.ufuncs : Section "Output arguments"
+
+    Notes
+    -----
+    Arithmetic is modular when using integer types, and no error is
+    raised on overflow.
+
+    Examples
+    --------
+    >>> a = np.array([1,2,3])
+    >>> np.cumprod(a) # intermediate results 1, 1*2
+    ...               # total product 1*2*3 = 6
+    array([1, 2, 6])
+    >>> a = np.array([[1, 2, 3], [4, 5, 6]])
+    >>> np.cumprod(a, dtype=float) # specify type of output
+    array([   1.,    2.,    6.,   24.,  120.,  720.])
+
+    The cumulative product for each column (i.e., over the rows) of `a`:
+
+    >>> np.cumprod(a, axis=0)
+    array([[ 1,  2,  3],
+           [ 4, 10, 18]])
+
+    The cumulative product for each row (i.e. over the columns) of `a`:
+
+    >>> np.cumprod(a,axis=1)
+    array([[  1,   2,   6],
+           [  4,  20, 120]])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def ndim(a):
+    """
+    Return the number of dimensions of an array.
+
+    Parameters
+    ----------
+    a : array_like
+        Input array.  If it is not already an ndarray, a conversion is
+        attempted.
+
+    Returns
+    -------
+    number_of_dimensions : int
+        The number of dimensions in `a`.  Scalars are zero-dimensional.
+
+    See Also
+    --------
+    ndarray.ndim : equivalent method
+    shape : dimensions of array
+    ndarray.shape : dimensions of array
+
+    Examples
+    --------
+    >>> np.ndim([[1,2,3],[4,5,6]])
+    2
+    >>> np.ndim(np.array([[1,2,3],[4,5,6]]))
+    2
+    >>> np.ndim(1)
+    0
+
+    """
+    if not hasattr(a, 'ndim'):
+        a = numpypy.array(a)
+    return a.ndim
+
+
+def rank(a):
+    """
+    Return the number of dimensions of an array.
+
+    If `a` is not already an array, a conversion is attempted.
+    Scalars are zero dimensional.
+
+    Parameters
+    ----------
+    a : array_like
+        Array whose number of dimensions is desired. If `a` is not an array,
+        a conversion is attempted.
+
+    Returns
+    -------
+    number_of_dimensions : int
+        The number of dimensions in the array.
+
+    See Also
+    --------
+    ndim : equivalent function
+    ndarray.ndim : equivalent property
+    shape : dimensions of array
+    ndarray.shape : dimensions of array
+
+    Notes
+    -----
+    In the old Numeric package, `rank` was the term used for the number of
+    dimensions, but in Numpy `ndim` is used instead.
+
+    Examples
+    --------
+    >>> np.rank([1,2,3])
+    1
+    >>> np.rank(np.array([[1,2,3],[4,5,6]]))
+    2
+    >>> np.rank(1)
+    0
+
+    """
+    if not hasattr(a, 'ndim'):
+        a = numpypy.array(a)
+    return a.ndim
+
+
+def size(a, axis=None):
+    """
+    Return the number of elements along a given axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Input data.
+    axis : int, optional
+        Axis along which the elements are counted.  By default, give
+        the total number of elements.
+
+    Returns
+    -------
+    element_count : int
+        Number of elements along the specified axis.
+
+    See Also
+    --------
+    shape : dimensions of array
+    ndarray.shape : dimensions of array
+    ndarray.size : number of elements in array
+
+    Examples
+    --------
+    >>> a = np.array([[1,2,3],[4,5,6]])
+    >>> np.size(a)
+    6
+    >>> np.size(a,1)
+    3
+    >>> np.size(a,0)
+    2
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def around(a, decimals=0, out=None):
+    """
+    Evenly round to the given number of decimals.
+
+    Parameters
+    ----------
+    a : array_like
+        Input data.
+    decimals : int, optional
+        Number of decimal places to round to (default: 0).  If
+        decimals is negative, it specifies the number of positions to
+        the left of the decimal point.
+    out : ndarray, optional
+        Alternative output array in which to place the result. It must have
+        the same shape as the expected output, but the type of the output
+        values will be cast if necessary. See `doc.ufuncs` (Section
+        "Output arguments") for details.
+
+    Returns
+    -------
+    rounded_array : ndarray
+        An array of the same type as `a`, containing the rounded values.
+        Unless `out` was specified, a new array is created.  A reference to
+        the result is returned.
+
+        The real and imaginary parts of complex numbers are rounded
+        separately.  The result of rounding a float is a float.
+
+    See Also
+    --------
+    ndarray.round : equivalent method
+
+    ceil, fix, floor, rint, trunc
+
+
+    Notes
+    -----
+    For values exactly halfway between rounded decimal values, Numpy
+    rounds to the nearest even value. Thus 1.5 and 2.5 round to 2.0,
+    -0.5 and 0.5 round to 0.0, etc. Results may also be surprising due
+    to the inexact representation of decimal fractions in the IEEE
+    floating point standard [1]_ and errors introduced when scaling
+    by powers of ten.
+
+    References
+    ----------
+    .. [1] "Lecture Notes on the Status of  IEEE 754", William Kahan,
+           http://www.cs.berkeley.edu/~wkahan/ieee754status/IEEE754.PDF
+    .. [2] "How Futile are Mindless Assessments of
+           Roundoff in Floating-Point Computation?", William Kahan,
+           http://www.cs.berkeley.edu/~wkahan/Mindless.pdf
+
+    Examples
+    --------
+    >>> np.around([0.37, 1.64])
+    array([ 0.,  2.])
+    >>> np.around([0.37, 1.64], decimals=1)
+    array([ 0.4,  1.6])
+    >>> np.around([.5, 1.5, 2.5, 3.5, 4.5]) # rounds to nearest even value
+    array([ 0.,  2.,  2.,  4.,  4.])
+    >>> np.around([1,2,3,11], decimals=1) # ndarray of ints is returned
+    array([ 1,  2,  3, 11])
+    >>> np.around([1,2,3,11], decimals=-1)
+    array([ 0,  0,  0, 10])
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def round_(a, decimals=0, out=None):
+    """
+    Round an array to the given number of decimals.
+
+    Refer to `around` for full documentation.
+
+    See Also
+    --------
+    around : equivalent function
+
+    """
+    raise NotImplemented('Waiting on interp level method')
+
+
+def mean(a, axis=None, dtype=None, out=None):
+    """
+    Compute the arithmetic mean along the specified axis.
+
+    Returns the average of the array elements.  The average is taken over
+    the flattened array by default, otherwise over the specified axis.
+    `float64` intermediate and return values are used for integer inputs.
+
+    Parameters
+    ----------
+    a : array_like
+        Array containing numbers whose mean is desired. If `a` is not an
+        array, a conversion is attempted.
+    axis : int, optional
+        Axis along which the means are computed. The default is to compute
+        the mean of the flattened array.
+    dtype : data-type, optional
+        Type to use in computing the mean.  For integer inputs, the default
+        is `float64`; for floating point inputs, it is the same as the
+        input dtype.
+    out : ndarray, optional
+        Alternate output array in which to place the result.  The default
+        is ``None``; if provided, it must have the same shape as the
+        expected output, but the type will be cast if necessary.
+        See `doc.ufuncs` for details.
+
+    Returns
+    -------
+    m : ndarray, see dtype parameter above
+        If `out=None`, returns a new array containing the mean values,
+        otherwise a reference to the output array is returned.
+
+    See Also
+    --------
+    average : Weighted average
+
+    Notes
+    -----
+    The arithmetic mean is the sum of the elements along the axis divided
+    by the number of elements.
+
+    Note that for floating-point input, the mean is computed using the
+    same precision the input has.  Depending on the input data, this can
+    cause the results to be inaccurate, especially for `float32` (see
+    example below).  Specifying a higher-precision accumulator using the
+    `dtype` keyword can alleviate this issue.
+
+    Examples
+    --------
+    >>> a = np.array([[1, 2], [3, 4]])
+    >>> np.mean(a)
+    2.5
+    >>> np.mean(a, axis=0)
+    array([ 2.,  3.])
+    >>> np.mean(a, axis=1)
+    array([ 1.5,  3.5])
+
+    In single precision, `mean` can be inaccurate:
+
+    >>> a = np.zeros((2, 512*512), dtype=np.float32)
+    >>> a[0, :] = 1.0
+    >>> a[1, :] = 0.1
+    >>> np.mean(a)
+    0.546875
+
+    Computing the mean in float64 is more accurate:
+
+    >>> np.mean(a, dtype=np.float64)
+    0.55000000074505806
+
+    """
+    if not hasattr(a, "mean"):
+        a = numpypy.array(a)
+    return a.mean()
+
+
+def std(a, axis=None, dtype=None, out=None, ddof=0):
+    """
+    Compute the standard deviation along the specified axis.
+
+    Returns the standard deviation, a measure of the spread of a distribution,
+    of the array elements. The standard deviation is computed for the
+    flattened array by default, otherwise over the specified axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Calculate the standard deviation of these values.
+    axis : int, optional
+        Axis along which the standard deviation is computed. The default is
+        to compute the standard deviation of the flattened array.
+    dtype : dtype, optional
+        Type to use in computing the standard deviation. For arrays of
+        integer type the default is float64, for arrays of float types it is
+        the same as the array type.
+    out : ndarray, optional
+        Alternative output array in which to place the result. It must have
+        the same shape as the expected output but the type (of the calculated
+        values) will be cast if necessary.
+    ddof : int, optional
+        Means Delta Degrees of Freedom.  The divisor used in calculations
+        is ``N - ddof``, where ``N`` represents the number of elements.
+        By default `ddof` is zero.
+
+    Returns
+    -------
+    standard_deviation : ndarray, see dtype parameter above.
+        If `out` is None, return a new array containing the standard deviation,
+        otherwise return a reference to the output array.
+
+    See Also
+    --------
+    var, mean
+    numpy.doc.ufuncs : Section "Output arguments"
+
+    Notes
+    -----
+    The standard deviation is the square root of the average of the squared
+    deviations from the mean, i.e., ``std = sqrt(mean(abs(x - x.mean())**2))``.
+
+    The average squared deviation is normally calculated as ``x.sum() / N``, where
+    ``N = len(x)``.  If, however, `ddof` is specified, the divisor ``N - ddof``
+    is used instead. In standard statistical practice, ``ddof=1`` provides an
+    unbiased estimator of the variance of the infinite population. ``ddof=0``
+    provides a maximum likelihood estimate of the variance for normally
+    distributed variables. The standard deviation computed in this function
+    is the square root of the estimated variance, so even with ``ddof=1``, it
+    will not be an unbiased estimate of the standard deviation per se.
+
+    Note that, for complex numbers, `std` takes the absolute
+    value before squaring, so that the result is always real and nonnegative.
+
+    For floating-point input, the *std* is computed using the same
+    precision the input has. Depending on the input data, this can cause
+    the results to be inaccurate, especially for float32 (see example below).
+    Specifying a higher-accuracy accumulator using the `dtype` keyword can
+    alleviate this issue.
+
+    Examples
+    --------
+    >>> a = np.array([[1, 2], [3, 4]])
+    >>> np.std(a)
+    1.1180339887498949
+    >>> np.std(a, axis=0)
+    array([ 1.,  1.])
+    >>> np.std(a, axis=1)
+    array([ 0.5,  0.5])
+
+    In single precision, std() can be inaccurate:
+
+    >>> a = np.zeros((2,512*512), dtype=np.float32)
+    >>> a[0,:] = 1.0
+    >>> a[1,:] = 0.1
+    >>> np.std(a)
+    0.45172946707416706
+
+    Computing the standard deviation in float64 is more accurate:
+
+    >>> np.std(a, dtype=np.float64)
+    0.44999999925552653
+
+    """
+    if not hasattr(a, "std"):
+        a = numpypy.array(a)
+    return a.std()
+
+
+def var(a, axis=None, dtype=None, out=None, ddof=0):
+    """
+    Compute the variance along the specified axis.
+
+    Returns the variance of the array elements, a measure of the spread of a
+    distribution.  The variance is computed for the flattened array by
+    default, otherwise over the specified axis.
+
+    Parameters
+    ----------
+    a : array_like
+        Array containing numbers whose variance is desired.  If `a` is not an
+        array, a conversion is attempted.
+    axis : int, optional
+        Axis along which the variance is computed.  The default is to compute
+        the variance of the flattened array.
+    dtype : data-type, optional
+        Type to use in computing the variance.  For arrays of integer type
+        the default is `float32`; for arrays of float types it is the same as
+        the array type.
+    out : ndarray, optional
+        Alternate output array in which to place the result.  It must have
+        the same shape as the expected output, but the type is cast if
+        necessary.
+    ddof : int, optional
+        "Delta Degrees of Freedom": the divisor used in the calculation is
+        ``N - ddof``, where ``N`` represents the number of elements. By
+        default `ddof` is zero.
+
+    Returns
+    -------
+    variance : ndarray, see dtype parameter above
+        If ``out=None``, returns a new array containing the variance;
+        otherwise, a reference to the output array is returned.
+
+    See Also
+    --------
+    std : Standard deviation
+    mean : Average
+    numpy.doc.ufuncs : Section "Output arguments"
+
+    Notes
+    -----
+    The variance is the average of the squared deviations from the mean,
+    i.e.,  ``var = mean(abs(x - x.mean())**2)``.
+
+    The mean is normally calculated as ``x.sum() / N``, where ``N = len(x)``.
+    If, however, `ddof` is specified, the divisor ``N - ddof`` is used
+    instead.  In standard statistical practice, ``ddof=1`` provides an
+    unbiased estimator of the variance of a hypothetical infinite population.
+    ``ddof=0`` provides a maximum likelihood estimate of the variance for
+    normally distributed variables.
+
+    Note that for complex numbers, the absolute value is taken before
+    squaring, so that the result is always real and nonnegative.
+
+    For floating-point input, the variance is computed using the same
+    precision the input has.  Depending on the input data, this can cause
+    the results to be inaccurate, especially for `float32` (see example
+    below).  Specifying a higher-accuracy accumulator using the ``dtype``
+    keyword can alleviate this issue.
+
+    Examples
+    --------
+    >>> a = np.array([[1,2],[3,4]])
+    >>> np.var(a)
+    1.25
+    >>> np.var(a,0)
+    array([ 1.,  1.])
+    >>> np.var(a,1)
+    array([ 0.25,  0.25])
+
+    In single precision, var() can be inaccurate:
+
+    >>> a = np.zeros((2,512*512), dtype=np.float32)
+    >>> a[0,:] = 1.0
+    >>> a[1,:] = 0.1
+    >>> np.var(a)
+    0.20405951142311096
+
+    Computing the standard deviation in float64 is more accurate:
+
+    >>> np.var(a, dtype=np.float64)
+    0.20249999932997387
+    >>> ((1-0.55)**2 + (0.1-0.55)**2)/2
+    0.20250000000000001
+
+    """
+    if not hasattr(a, "var"):
+        a = numpypy.array(a)
+    return a.var()
diff --git a/lib_pypy/numpypy/test/test_fromnumeric.py b/lib_pypy/numpypy/test/test_fromnumeric.py
new file mode 100644
--- /dev/null
+++ b/lib_pypy/numpypy/test/test_fromnumeric.py
@@ -0,0 +1,109 @@
+
+from pypy.module.micronumpy.test.test_base import BaseNumpyAppTest
+
+class AppTestFromNumeric(BaseNumpyAppTest):     
+    def test_argmax(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, arange, argmax
+        a = arange(6).reshape((2,3))
+        assert argmax(a) == 5
+        # assert (argmax(a, axis=0) == array([1, 1, 1])).all()
+        # assert (argmax(a, axis=1) == array([2, 2])).all()
+        b = arange(6)
+        b[1] = 5
+        assert argmax(b) == 1
+
+    def test_argmin(self):
+        # tests adapted from test_argmax
+        from numpypy import array, arange, argmin
+        a = arange(6).reshape((2,3))
+        assert argmin(a) == 0
+        # assert (argmax(a, axis=0) == array([0, 0, 0])).all()
+        # assert (argmax(a, axis=1) == array([0, 0])).all()
+        b = arange(6)
+        b[1] = 0
+        assert argmin(b) == 0
+   
+    def test_shape(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, identity, shape
+        assert shape(identity(3)) == (3, 3)
+        assert shape([[1, 2]]) == (1, 2)
+        assert shape([0]) ==  (1,)
+        assert shape(0) == ()
+        # a = array([(1, 2), (3, 4)], dtype=[('x', 'i4'), ('y', 'i4')])
+        # assert shape(a) == (2,)
+
+    def test_sum(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, sum, ones
+        assert sum([0.5, 1.5])== 2.0
+        assert sum([[0, 1], [0, 5]]) == 6
+        # assert sum([0.5, 0.7, 0.2, 1.5], dtype=int32) == 1
+        # assert (sum([[0, 1], [0, 5]], axis=0) == array([0, 6])).all()
+        # assert (sum([[0, 1], [0, 5]], axis=1) == array([1, 5])).all()
+        # If the accumulator is too small, overflow occurs:
+        # assert ones(128, dtype=int8).sum(dtype=int8) == -128
+                                 
+    def test_amin(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, arange, amin
+        a = arange(4).reshape((2,2))
+        assert amin(a) == 0
+        # # Minima along the first axis
+        # assert (amin(a, axis=0) == array([0, 1])).all()
+        # # Minima along the second axis
+        # assert (amin(a, axis=1) == array([0, 2])).all()
+        # # NaN behaviour
+        # b = arange(5, dtype=float)
+        # b[2] = NaN
+        # assert amin(b) == nan
+        # assert nanmin(b) == 0.0
+
+    def test_amax(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, arange, amax
+        a = arange(4).reshape((2,2))
+        assert amax(a) == 3
+        # assert (amax(a, axis=0) == array([2, 3])).all()
+        # assert (amax(a, axis=1) == array([1, 3])).all()
+        # # NaN behaviour
+        # b = arange(5, dtype=float)
+        # b[2] = NaN
+        # assert amax(b) == nan
+        # assert nanmax(b) == 4.0
+
+    def test_alen(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, zeros, alen
+        a = zeros((7,4,5))
+        assert a.shape[0] == 7
+        assert alen(a)    == 7
+
+    def test_ndim(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, ndim
+        assert ndim([[1,2,3],[4,5,6]]) == 2
+        assert ndim(array([[1,2,3],[4,5,6]])) == 2
+        assert ndim(1) == 0
+    
+    def test_rank(self):
+        # tests taken from numpy/core/fromnumeric.py docstring
+        from numpypy import array, rank
+        assert rank([[1,2,3],[4,5,6]]) == 2
+        assert rank(array([[1,2,3],[4,5,6]])) == 2
+        assert rank(1) == 0
+    
+    def test_var(self):
+        from numpypy import array, var
+        a = array([[1,2],[3,4]])
+        assert var(a) == 1.25
+        # assert (np.var(a,0) == array([ 1.,  1.])).all()
+        # assert (np.var(a,1) == array([ 0.25,  0.25])).all()
+
+    def test_std(self):
+        from numpypy import array, std
+        a = array([[1, 2], [3, 4]])
+        assert std(a) ==  1.1180339887498949
+        # assert (std(a, axis=0) == array([ 1.,  1.])).all()
+        # assert (std(a, axis=1) == array([ 0.5,  0.5]).all()
diff --git a/pypy/annotation/description.py b/pypy/annotation/description.py
--- a/pypy/annotation/description.py
+++ b/pypy/annotation/description.py
@@ -257,7 +257,8 @@
         try:
             inputcells = args.match_signature(signature, defs_s)
         except ArgErr, e:
-            raise TypeError, "signature mismatch: %s" % e.getmsg(self.name)
+            raise TypeError("signature mismatch: %s() %s" % 
+                            (self.name, e.getmsg()))
         return inputcells
 
     def specialize(self, inputcells, op=None):
diff --git a/pypy/doc/coding-guide.rst b/pypy/doc/coding-guide.rst
--- a/pypy/doc/coding-guide.rst
+++ b/pypy/doc/coding-guide.rst
@@ -175,15 +175,15 @@
 RPython
 =================
 
-RPython Definition, not
------------------------
+RPython Definition
+------------------
 
-The list and exact details of the "RPython" restrictions are a somewhat
-evolving topic.  In particular, we have no formal language definition
-as we find it more practical to discuss and evolve the set of
-restrictions while working on the whole program analysis.  If you
-have any questions about the restrictions below then please feel
-free to mail us at pypy-dev at codespeak net.
+RPython is a restricted subset of Python that is amenable to static analysis.
+Although there are additions to the language and some things might surprisingly
+work, this is a rough list of restrictions that should be considered. Note
+that there are tons of special cased restrictions that you'll encounter
+as you go. The exact definition is "RPython is everything that our translation
+toolchain can accept" :)
 
 .. _`wrapped object`: coding-guide.html#wrapping-rules
 
@@ -198,7 +198,7 @@
   contain both a string and a int must be avoided.  It is allowed to
   mix None (basically with the role of a null pointer) with many other
   types: `wrapped objects`, class instances, lists, dicts, strings, etc.
-  but *not* with int and floats.
+  but *not* with int, floats or tuples.
 
 **constants**
 
@@ -209,9 +209,12 @@
   have this restriction, so if you need mutable global state, store it
   in the attributes of some prebuilt singleton instance.
 
+
+
 **control structures**
 
-  all allowed but yield, ``for`` loops restricted to builtin types
+  all allowed, ``for`` loops restricted to builtin types, generators
+  very restricted.
 
 **range**
 
@@ -226,7 +229,8 @@
 
 **generators**
 
-  generators are not supported.
+  generators are supported, but their exact scope is very limited. you can't
+  merge two different generator in one control point.
 
 **exceptions**
 
@@ -245,22 +249,27 @@
 
 **strings**
 
-  a lot of, but not all string methods are supported.  Indexes can be
+  a lot of, but not all string methods are supported and those that are
+  supported, not necesarilly accept all arguments.  Indexes can be
   negative.  In case they are not, then you get slightly more efficient
   code if the translator can prove that they are non-negative.  When
   slicing a string it is necessary to prove that the slice start and
-  stop indexes are non-negative.
+  stop indexes are non-negative. There is no implicit str-to-unicode cast
+  anywhere.
 
 **tuples**
 
   no variable-length tuples; use them to store or return pairs or n-tuples of
-  values. Each combination of types for elements and length constitute a separate
-  and not mixable type.
+  values. Each combination of types for elements and length constitute
+  a separate and not mixable type.
 
 **lists**
 
   lists are used as an allocated array.  Lists are over-allocated, so list.append()
-  is reasonably fast.  Negative or out-of-bound indexes are only allowed for the
+  is reasonably fast. However, if you use a fixed-size list, the code
+  is more efficient. Annotator can figure out most of the time that your
+  list is fixed-size, even when you use list comprehension.
+  Negative or out-of-bound indexes are only allowed for the
   most common operations, as follows:
 
   - *indexing*:
@@ -287,16 +296,14 @@
 
 **dicts**
 
-  dicts with a unique key type only, provided it is hashable. 
-  String keys have been the only allowed key types for a while, but this was generalized. 
-  After some re-optimization,
-  the implementation could safely decide that all string dict keys should be interned.
+  dicts with a unique key type only, provided it is hashable. Custom
+  hash functions and custom equality will not be honored.
+  Use ``pypy.rlib.objectmodel.r_dict`` for custom hash functions.
 
 
 **list comprehensions**
 
-  may be used to create allocated, initialized arrays.
-  After list over-allocation was introduced, there is no longer any restriction.
+  May be used to create allocated, initialized arrays.
 
 **functions**
 
@@ -334,9 +341,7 @@
 
 **objects**
 
-  in PyPy, wrapped objects are borrowed from the object space. Just like
-  in CPython, code that needs e.g. a dictionary can use a wrapped dict
-  and the object space operations on it.
+  Normal rules apply.
 
 This layout makes the number of types to take care about quite limited.
 
diff --git a/pypy/interpreter/argument.py b/pypy/interpreter/argument.py
--- a/pypy/interpreter/argument.py
+++ b/pypy/interpreter/argument.py
@@ -428,8 +428,8 @@
             return self._match_signature(w_firstarg,
                                          scope_w, signature, defaults_w, 0)
         except ArgErr, e:
-            raise OperationError(self.space.w_TypeError,
-                                 self.space.wrap(e.getmsg(fnname)))
+            raise operationerrfmt(self.space.w_TypeError,
+                                  "%s() %s", fnname, e.getmsg())
 
     def _parse(self, w_firstarg, signature, defaults_w, blindargs=0):
         """Parse args and kwargs according to the signature of a code object,
@@ -450,8 +450,8 @@
         try:
             return self._parse(w_firstarg, signature, defaults_w, blindargs)
         except ArgErr, e:
-            raise OperationError(self.space.w_TypeError,
-                                 self.space.wrap(e.getmsg(fnname)))
+            raise operationerrfmt(self.space.w_TypeError,
+                                  "%s() %s", fnname, e.getmsg())
 
     @staticmethod
     def frompacked(space, w_args=None, w_kwds=None):
@@ -626,7 +626,7 @@
 
 class ArgErr(Exception):
 
-    def getmsg(self, fnname):
+    def getmsg(self):
         raise NotImplementedError
 
 class ArgErrCount(ArgErr):
@@ -642,11 +642,10 @@
         self.num_args = got_nargs
         self.num_kwds = nkwds
 
-    def getmsg(self, fnname):
+    def getmsg(self):
         n = self.expected_nargs
         if n == 0:
-            msg = "%s() takes no arguments (%d given)" % (
-                fnname,
+            msg = "takes no arguments (%d given)" % (
                 self.num_args + self.num_kwds)
         else:
             defcount = self.num_defaults
@@ -672,8 +671,7 @@
                 msg2 = " non-keyword"
             else:
                 msg2 = ""
-            msg = "%s() takes %s %d%s argument%s (%d given)" % (
-                fnname,
+            msg = "takes %s %d%s argument%s (%d given)" % (
                 msg1,
                 n,
                 msg2,
@@ -686,9 +684,8 @@
     def __init__(self, argname):
         self.argname = argname
 
-    def getmsg(self, fnname):
-        msg = "%s() got multiple values for keyword argument '%s'" % (
-            fnname,
+    def getmsg(self):
+        msg = "got multiple values for keyword argument '%s'" % (
             self.argname)
         return msg
 
@@ -722,13 +719,11 @@
                     break
         self.kwd_name = name
 
-    def getmsg(self, fnname):
+    def getmsg(self):
         if self.num_kwds == 1:
-            msg = "%s() got an unexpected keyword argument '%s'" % (
-                fnname,
+            msg = "got an unexpected keyword argument '%s'" % (
                 self.kwd_name)
         else:
-            msg = "%s() got %d unexpected keyword arguments" % (
-                fnname,
+            msg = "got %d unexpected keyword arguments" % (
                 self.num_kwds)
         return msg
diff --git a/pypy/interpreter/baseobjspace.py b/pypy/interpreter/baseobjspace.py
--- a/pypy/interpreter/baseobjspace.py
+++ b/pypy/interpreter/baseobjspace.py
@@ -1591,12 +1591,15 @@
     'ArithmeticError',
     'AssertionError',
     'AttributeError',
+    'BaseException',
+    'DeprecationWarning',
     'EOFError',
     'EnvironmentError',
     'Exception',
     'FloatingPointError',
     'IOError',
     'ImportError',
+    'ImportWarning',
     'IndentationError',
     'IndexError',
     'KeyError',
@@ -1617,7 +1620,10 @@
     'TabError',
     'TypeError',
     'UnboundLocalError',
+    'UnicodeDecodeError',
     'UnicodeError',
+    'UnicodeEncodeError',
+    'UnicodeTranslateError',
     'ValueError',
     'ZeroDivisionError',
     'UnicodeEncodeError',
diff --git a/pypy/interpreter/test/test_argument.py b/pypy/interpreter/test/test_argument.py
--- a/pypy/interpreter/test/test_argument.py
+++ b/pypy/interpreter/test/test_argument.py
@@ -393,8 +393,8 @@
 
         class FakeArgErr(ArgErr):
 
-            def getmsg(self, fname):
-                return "msg "+fname
+            def getmsg(self):
+                return "msg"
 
         def _match_signature(*args):
             raise FakeArgErr()
@@ -404,7 +404,7 @@
         excinfo = py.test.raises(OperationError, args.parse_obj, "obj", "foo",
                        Signature(["a", "b"], None, None))
         assert excinfo.value.w_type is TypeError
-        assert excinfo.value._w_value == "msg foo"
+        assert excinfo.value.get_w_value(space) == "foo() msg"
 
 
     def test_args_parsing_into_scope(self):
@@ -448,8 +448,8 @@
 
         class FakeArgErr(ArgErr):
 
-            def getmsg(self, fname):
-                return "msg "+fname
+            def getmsg(self):
+                return "msg"
 
         def _match_signature(*args):
             raise FakeArgErr()
@@ -460,7 +460,7 @@
                                  "obj", [None, None], "foo",
                                  Signature(["a", "b"], None, None))
         assert excinfo.value.w_type is TypeError
-        assert excinfo.value._w_value == "msg foo"
+        assert excinfo.value.get_w_value(space) == "foo() msg"
 
     def test_topacked_frompacked(self):
         space = DummySpace()
@@ -493,35 +493,35 @@
         # got_nargs, nkwds, expected_nargs, has_vararg, has_kwarg,
         # defaults_w, missing_args
         err = ArgErrCount(1, 0, 0, False, False, None, 0)
-        s = err.getmsg('foo')
-        assert s == "foo() takes no arguments (1 given)"
+        s = err.getmsg()
+        assert s == "takes no arguments (1 given)"
         err = ArgErrCount(0, 0, 1, False, False, [], 1)
-        s = err.getmsg('foo')
-        assert s == "foo() takes exactly 1 argument (0 given)"
+        s = err.getmsg()
+        assert s == "takes exactly 1 argument (0 given)"
         err = ArgErrCount(3, 0, 2, False, False, [], 0)
-        s = err.getmsg('foo')
-        assert s == "foo() takes exactly 2 arguments (3 given)"
+        s = err.getmsg()
+        assert s == "takes exactly 2 arguments (3 given)"
         err = ArgErrCount(3, 0, 2, False, False, ['a'], 0)
-        s = err.getmsg('foo')
-        assert s == "foo() takes at most 2 arguments (3 given)"
+        s = err.getmsg()
+        assert s == "takes at most 2 arguments (3 given)"
         err = ArgErrCount(1, 0, 2, True, False, [], 1)
-        s = err.getmsg('foo')
-        assert s == "foo() takes at least 2 arguments (1 given)"
+        s = err.getmsg()
+        assert s == "takes at least 2 arguments (1 given)"
         err = ArgErrCount(0, 1, 2, True, False, ['a'], 1)
-        s = err.getmsg('foo')
-        assert s == "foo() takes at least 1 non-keyword argument (0 given)"
+        s = err.getmsg()
+        assert s == "takes at least 1 non-keyword argument (0 given)"
         err = ArgErrCount(2, 1, 1, False, True, [], 0)
-        s = err.getmsg('foo')
-        assert s == "foo() takes exactly 1 non-keyword argument (2 given)"
+        s = err.getmsg()
+        assert s == "takes exactly 1 non-keyword argument (2 given)"
         err = ArgErrCount(0, 1, 1, False, True, [], 1)
-        s = err.getmsg('foo')
-        assert s == "foo() takes exactly 1 non-keyword argument (0 given)"
+        s = err.getmsg()
+        assert s == "takes exactly 1 non-keyword argument (0 given)"
         err = ArgErrCount(0, 1, 1, True, True, [], 1)
-        s = err.getmsg('foo')
-        assert s == "foo() takes at least 1 non-keyword argument (0 given)"
+        s = err.getmsg()
+        assert s == "takes at least 1 non-keyword argument (0 given)"
         err = ArgErrCount(2, 1, 1, False, True, ['a'], 0)
-        s = err.getmsg('foo')
-        assert s == "foo() takes at most 1 non-keyword argument (2 given)"
+        s = err.getmsg()
+        assert s == "takes at most 1 non-keyword argument (2 given)"
 
     def test_bad_type_for_star(self):
         space = self.space
@@ -543,12 +543,12 @@
     def test_unknown_keywords(self):
         space = DummySpace()
         err = ArgErrUnknownKwds(space, 1, ['a', 'b'], [True, False], None)
-        s = err.getmsg('foo')
-        assert s == "foo() got an unexpected keyword argument 'b'"
+        s = err.getmsg()
+        assert s == "got an unexpected keyword argument 'b'"
         err = ArgErrUnknownKwds(space, 2, ['a', 'b', 'c'],
                                 [True, False, False], None)
-        s = err.getmsg('foo')
-        assert s == "foo() got 2 unexpected keyword arguments"
+        s = err.getmsg()
+        assert s == "got 2 unexpected keyword arguments"
 
     def test_unknown_unicode_keyword(self):
         class DummySpaceUnicode(DummySpace):
@@ -558,13 +558,13 @@
         err = ArgErrUnknownKwds(space, 1, ['a', None, 'b', 'c'],
                                 [True, False, True, True],
                                 [unichr(0x1234), u'b', u'c'])
-        s = err.getmsg('foo')
-        assert s == "foo() got an unexpected keyword argument '\xe1\x88\xb4'"
+        s = err.getmsg()
+        assert s == "got an unexpected keyword argument '\xe1\x88\xb4'"
 
     def test_multiple_values(self):
         err = ArgErrMultipleValues('bla')
-        s = err.getmsg('foo')
-        assert s == "foo() got multiple values for keyword argument 'bla'"
+        s = err.getmsg()
+        assert s == "got multiple values for keyword argument 'bla'"
 
 class AppTestArgument:
     def test_error_message(self):
diff --git a/pypy/jit/backend/x86/regalloc.py b/pypy/jit/backend/x86/regalloc.py
--- a/pypy/jit/backend/x86/regalloc.py
+++ b/pypy/jit/backend/x86/regalloc.py
@@ -683,7 +683,7 @@
         self.xrm.possibly_free_var(op.getarg(0))
 
     def consider_cast_int_to_float(self, op):
-        loc0 = self.rm.loc(op.getarg(0))
+        loc0 = self.rm.make_sure_var_in_reg(op.getarg(0))
         loc1 = self.xrm.force_allocate_reg(op.result)
         self.Perform(op, [loc0], loc1)
         self.rm.possibly_free_var(op.getarg(0))
diff --git a/pypy/jit/backend/x86/test/test_runner.py b/pypy/jit/backend/x86/test/test_runner.py
--- a/pypy/jit/backend/x86/test/test_runner.py
+++ b/pypy/jit/backend/x86/test/test_runner.py
@@ -420,8 +420,8 @@
         debug._log = None
         #
         assert ops_offset is looptoken._x86_ops_offset
-        # getfield_raw/int_add/setfield_raw + ops + None
-        assert len(ops_offset) == 3 + len(operations) + 1
+        # 2*(getfield_raw/int_add/setfield_raw) + ops + None
+        assert len(ops_offset) == 2*3 + len(operations) + 1
         assert (ops_offset[operations[0]] <=
                 ops_offset[operations[1]] <=
                 ops_offset[operations[2]] <=
diff --git a/pypy/jit/metainterp/optimizeopt/fficall.py b/pypy/jit/metainterp/optimizeopt/fficall.py
--- a/pypy/jit/metainterp/optimizeopt/fficall.py
+++ b/pypy/jit/metainterp/optimizeopt/fficall.py
@@ -234,11 +234,11 @@
             # longlongs are treated as floats, see
             # e.g. llsupport/descr.py:getDescrClass
             is_float = True
-        elif kind == 'u':
+        elif kind == 'u' or kind == 's':
             # they're all False
             pass
         else:
-            assert False, "unsupported ffitype or kind"
+            raise NotImplementedError("unsupported ffitype or kind: %s" % kind)
         #
         fieldsize = rffi.getintfield(ffitype, 'c_size')
         return self.optimizer.cpu.interiorfielddescrof_dynamic(
diff --git a/pypy/jit/metainterp/optimizeopt/test/test_multilabel.py b/pypy/jit/metainterp/optimizeopt/test/test_multilabel.py
--- a/pypy/jit/metainterp/optimizeopt/test/test_multilabel.py
+++ b/pypy/jit/metainterp/optimizeopt/test/test_multilabel.py
@@ -442,6 +442,22 @@
         """
         self.optimize_loop(ops, expected)
 
+    def test_optimizer_renaming_boxes_not_imported(self):
+        ops = """
+        [p1]
+        i1 = strlen(p1)
+        label(p1)
+        jump(p1)
+        """
+        expected = """
+        [p1]
+        i1 = strlen(p1)
+        label(p1, i1)
+        i11 = same_as(i1)
+        jump(p1, i11)
+        """
+        self.optimize_loop(ops, expected)
+
         
 
 class TestLLtype(OptimizeoptTestMultiLabel, LLtypeMixin):
diff --git a/pypy/jit/metainterp/optimizeopt/unroll.py b/pypy/jit/metainterp/optimizeopt/unroll.py
--- a/pypy/jit/metainterp/optimizeopt/unroll.py
+++ b/pypy/jit/metainterp/optimizeopt/unroll.py
@@ -271,6 +271,10 @@
                 if newresult is not op.result and not newvalue.is_constant():
                     op = ResOperation(rop.SAME_AS, [op.result], newresult)
                     self.optimizer._newoperations.append(op)
+                    if self.optimizer.loop.logops:
+                        debug_print('  Falling back to add extra: ' +
+                                    self.optimizer.loop.logops.repr_of_resop(op))
+                    
         self.optimizer.flush()
         self.optimizer.emitting_dissabled = False
 
@@ -435,7 +439,13 @@
             return
         for a in op.getarglist():
             if not isinstance(a, Const) and a not in seen:
-                self.ensure_short_op_emitted(self.short_boxes.producer(a), optimizer, seen)
+                self.ensure_short_op_emitted(self.short_boxes.producer(a), optimizer,
+                                             seen)
+
+        if self.optimizer.loop.logops:
+            debug_print('  Emitting short op: ' +
+                        self.optimizer.loop.logops.repr_of_resop(op))
+
         optimizer.send_extra_operation(op)
         seen[op.result] = True
         if op.is_ovf():
diff --git a/pypy/jit/metainterp/resoperation.py b/pypy/jit/metainterp/resoperation.py
--- a/pypy/jit/metainterp/resoperation.py
+++ b/pypy/jit/metainterp/resoperation.py
@@ -16,15 +16,13 @@
     # debug
     name = ""
     pc = 0
+    opnum = 0
 
     def __init__(self, result):
         self.result = result
 
-    # methods implemented by each concrete class
-    # ------------------------------------------
-
     def getopnum(self):
-        raise NotImplementedError
+        return self.opnum
 
     # methods implemented by the arity mixins
     # ---------------------------------------
@@ -590,12 +588,9 @@
         baseclass = PlainResOp
     mixin = arity2mixin.get(arity, N_aryOp)
 
-    def getopnum(self):
-        return opnum
-
     cls_name = '%s_OP' % name
     bases = (get_base_class(mixin, baseclass),)
-    dic = {'getopnum': getopnum}
+    dic = {'opnum': opnum}
     return type(cls_name, bases, dic)
 
 setup(__name__ == '__main__')   # print out the table when run directly
diff --git a/pypy/jit/metainterp/test/test_fficall.py b/pypy/jit/metainterp/test/test_fficall.py
--- a/pypy/jit/metainterp/test/test_fficall.py
+++ b/pypy/jit/metainterp/test/test_fficall.py
@@ -148,28 +148,38 @@
         self.check_resops({'jump': 1, 'int_lt': 2, 'setinteriorfield_raw': 4,
                            'getinteriorfield_raw': 8, 'int_add': 6, 'guard_true': 2})
 
-    def test_array_getitem_uint8(self):
+    def _test_getitem_type(self, TYPE, ffitype, COMPUTE_TYPE):
+        reds = ["n", "i", "s", "data"]
+        if COMPUTE_TYPE is lltype.Float:
+            # Move the float var to the back.
+            reds.remove("s")
+            reds.append("s")
         myjitdriver = JitDriver(
             greens = [],
-            reds = ["n", "i", "s", "data"],
+            reds = reds,
         )
         def f(data, n):
-            i = s = 0
+            i = 0
+            s = rffi.cast(COMPUTE_TYPE, 0)
             while i < n:
                 myjitdriver.jit_merge_point(n=n, i=i, s=s, data=data)
-                s += rffi.cast(lltype.Signed, array_getitem(types.uchar, 1, data, 0, 0))
+                s += rffi.cast(COMPUTE_TYPE, array_getitem(ffitype, rffi.sizeof(TYPE), data, 0, 0))
                 i += 1
             return s
+        def main(n):
+            with lltype.scoped_alloc(rffi.CArray(TYPE), 1) as data:
+                data[0] = rffi.cast(TYPE, 200)
+                return f(data, n)
+        assert self.meta_interp(main, [10]) == 2000
 
-        def main(n):
-            with lltype.scoped_alloc(rffi.CArray(rffi.UCHAR), 1) as data:
-                data[0] = rffi.cast(rffi.UCHAR, 200)
-                return f(data, n)
-
-        assert self.meta_interp(main, [10]) == 2000
+    def test_array_getitem_uint8(self):
+        self._test_getitem_type(rffi.UCHAR, types.uchar, lltype.Signed)
         self.check_resops({'jump': 1, 'int_lt': 2, 'getinteriorfield_raw': 2,
                            'guard_true': 2, 'int_add': 4})
 
+    def test_array_getitem_float(self):
+        self._test_getitem_type(rffi.FLOAT, types.float, lltype.Float)
+
 
 class TestFfiCall(FfiCallTests, LLJitMixin):
     supports_all = False
diff --git a/pypy/jit/metainterp/test/test_resoperation.py b/pypy/jit/metainterp/test/test_resoperation.py
--- a/pypy/jit/metainterp/test/test_resoperation.py
+++ b/pypy/jit/metainterp/test/test_resoperation.py
@@ -30,17 +30,17 @@
     cls = rop.opclasses[rop.rop.INT_ADD]
     assert issubclass(cls, rop.PlainResOp)
     assert issubclass(cls, rop.BinaryOp)
-    assert cls.getopnum.im_func(None) == rop.rop.INT_ADD
+    assert cls.getopnum.im_func(cls) == rop.rop.INT_ADD
 
     cls = rop.opclasses[rop.rop.CALL]
     assert issubclass(cls, rop.ResOpWithDescr)
     assert issubclass(cls, rop.N_aryOp)
-    assert cls.getopnum.im_func(None) == rop.rop.CALL
+    assert cls.getopnum.im_func(cls) == rop.rop.CALL
 
     cls = rop.opclasses[rop.rop.GUARD_TRUE]
     assert issubclass(cls, rop.GuardResOp)
     assert issubclass(cls, rop.UnaryOp)
-    assert cls.getopnum.im_func(None) == rop.rop.GUARD_TRUE
+    assert cls.getopnum.im_func(cls) == rop.rop.GUARD_TRUE
 
 def test_mixins_in_common_base():
     INT_ADD = rop.opclasses[rop.rop.INT_ADD]
diff --git a/pypy/module/_lsprof/interp_lsprof.py b/pypy/module/_lsprof/interp_lsprof.py
--- a/pypy/module/_lsprof/interp_lsprof.py
+++ b/pypy/module/_lsprof/interp_lsprof.py
@@ -19,8 +19,9 @@
 # cpu affinity settings
 
 srcdir = py.path.local(pypydir).join('translator', 'c', 'src')
-eci = ExternalCompilationInfo(separate_module_files=
-                              [srcdir.join('profiling.c')])
+eci = ExternalCompilationInfo(
+    separate_module_files=[srcdir.join('profiling.c')],
+    export_symbols=['pypy_setup_profiling', 'pypy_teardown_profiling'])
                                                      
 c_setup_profiling = rffi.llexternal('pypy_setup_profiling',
                                   [], lltype.Void,
diff --git a/pypy/module/cpyext/api.py b/pypy/module/cpyext/api.py
--- a/pypy/module/cpyext/api.py
+++ b/pypy/module/cpyext/api.py
@@ -23,6 +23,7 @@
 from pypy.interpreter.function import StaticMethod
 from pypy.objspace.std.sliceobject import W_SliceObject
 from pypy.module.__builtin__.descriptor import W_Property
+from pypy.module.__builtin__.interp_memoryview import W_MemoryView
 from pypy.rlib.entrypoint import entrypoint
 from pypy.rlib.unroll import unrolling_iterable
 from pypy.rlib.objectmodel import specialize
@@ -387,6 +388,8 @@
         "Float": "space.w_float",
         "Long": "space.w_long",
         "Complex": "space.w_complex",
+        "ByteArray": "space.w_bytearray",
+        "MemoryView": "space.gettypeobject(W_MemoryView.typedef)",
         "BaseObject": "space.w_object",
         'None': 'space.type(space.w_None)',
         'NotImplemented': 'space.type(space.w_NotImplemented)',
diff --git a/pypy/module/cpyext/buffer.py b/pypy/module/cpyext/buffer.py
--- a/pypy/module/cpyext/buffer.py
+++ b/pypy/module/cpyext/buffer.py
@@ -1,6 +1,36 @@
+from pypy.interpreter.error import OperationError
 from pypy.rpython.lltypesystem import rffi, lltype
 from pypy.module.cpyext.api import (
     cpython_api, CANNOT_FAIL, Py_buffer)
+from pypy.module.cpyext.pyobject import PyObject
+
+ at cpython_api([PyObject], rffi.INT_real, error=CANNOT_FAIL)
+def PyObject_CheckBuffer(space, w_obj):
+    """Return 1 if obj supports the buffer interface otherwise 0."""
+    return 0  # the bf_getbuffer field is never filled by cpyext
+
+ at cpython_api([PyObject, lltype.Ptr(Py_buffer), rffi.INT_real],
+             rffi.INT_real, error=-1)
+def PyObject_GetBuffer(space, w_obj, view, flags):
+    """Export obj into a Py_buffer, view.  These arguments must
+    never be NULL.  The flags argument is a bit field indicating what
+    kind of buffer the caller is prepared to deal with and therefore what
+    kind of buffer the exporter is allowed to return.  The buffer interface
+    allows for complicated memory sharing possibilities, but some caller may
+    not be able to handle all the complexity but may want to see if the
+    exporter will let them take a simpler view to its memory.
+
+    Some exporters may not be able to share memory in every possible way and
+    may need to raise errors to signal to some consumers that something is
+    just not possible. These errors should be a BufferError unless
+    there is another error that is actually causing the problem. The
+    exporter can use flags information to simplify how much of the
+    Py_buffer structure is filled in with non-default values and/or
+    raise an error if the object can't support a simpler view of its memory.
+
+    0 is returned on success and -1 on error."""
+    raise OperationError(space.w_TypeError, space.wrap(
+            'PyPy does not yet implement the new buffer interface'))
 
 @cpython_api([lltype.Ptr(Py_buffer), lltype.Char], rffi.INT_real, error=CANNOT_FAIL)
 def PyBuffer_IsContiguous(space, view, fortran):
diff --git a/pypy/module/cpyext/include/object.h b/pypy/module/cpyext/include/object.h
--- a/pypy/module/cpyext/include/object.h
+++ b/pypy/module/cpyext/include/object.h
@@ -123,10 +123,6 @@
 typedef Py_ssize_t (*segcountproc)(PyObject *, Py_ssize_t *);
 typedef Py_ssize_t (*charbufferproc)(PyObject *, Py_ssize_t, char **);
 
-typedef int (*objobjproc)(PyObject *, PyObject *);
-typedef int (*visitproc)(PyObject *, void *);
-typedef int (*traverseproc)(PyObject *, visitproc, void *);
-
 /* Py3k buffer interface */
 typedef struct bufferinfo {
     void *buf;
@@ -153,6 +149,41 @@
 typedef int (*getbufferproc)(PyObject *, Py_buffer *, int);
 typedef void (*releasebufferproc)(PyObject *, Py_buffer *);
 
+    /* Flags for getting buffers */
+#define PyBUF_SIMPLE 0
+#define PyBUF_WRITABLE 0x0001
+/*  we used to include an E, backwards compatible alias  */
+#define PyBUF_WRITEABLE PyBUF_WRITABLE
+#define PyBUF_FORMAT 0x0004
+#define PyBUF_ND 0x0008
+#define PyBUF_STRIDES (0x0010 | PyBUF_ND)
+#define PyBUF_C_CONTIGUOUS (0x0020 | PyBUF_STRIDES)
+#define PyBUF_F_CONTIGUOUS (0x0040 | PyBUF_STRIDES)
+#define PyBUF_ANY_CONTIGUOUS (0x0080 | PyBUF_STRIDES)
+#define PyBUF_INDIRECT (0x0100 | PyBUF_STRIDES)
+
+#define PyBUF_CONTIG (PyBUF_ND | PyBUF_WRITABLE)
+#define PyBUF_CONTIG_RO (PyBUF_ND)
+
+#define PyBUF_STRIDED (PyBUF_STRIDES | PyBUF_WRITABLE)
+#define PyBUF_STRIDED_RO (PyBUF_STRIDES)
+
+#define PyBUF_RECORDS (PyBUF_STRIDES | PyBUF_WRITABLE | PyBUF_FORMAT)
+#define PyBUF_RECORDS_RO (PyBUF_STRIDES | PyBUF_FORMAT)
+
+#define PyBUF_FULL (PyBUF_INDIRECT | PyBUF_WRITABLE | PyBUF_FORMAT)
+#define PyBUF_FULL_RO (PyBUF_INDIRECT | PyBUF_FORMAT)
+
+
+#define PyBUF_READ  0x100
+#define PyBUF_WRITE 0x200
+#define PyBUF_SHADOW 0x400
+/* end Py3k buffer interface */
+
+typedef int (*objobjproc)(PyObject *, PyObject *);
+typedef int (*visitproc)(PyObject *, void *);
+typedef int (*traverseproc)(PyObject *, visitproc, void *);
+
 typedef struct {
 	/* For numbers without flag bit Py_TPFLAGS_CHECKTYPES set, all
 	   arguments are guaranteed to be of the object's type (modulo
diff --git a/pypy/module/cpyext/include/pystate.h b/pypy/module/cpyext/include/pystate.h
--- a/pypy/module/cpyext/include/pystate.h
+++ b/pypy/module/cpyext/include/pystate.h
@@ -5,7 +5,7 @@
 struct _is; /* Forward */
 
 typedef struct _is {
-    int _foo;
+    struct _is *next;
 } PyInterpreterState;
 
 typedef struct _ts {
diff --git a/pypy/module/cpyext/pystate.py b/pypy/module/cpyext/pystate.py
--- a/pypy/module/cpyext/pystate.py
+++ b/pypy/module/cpyext/pystate.py
@@ -2,7 +2,10 @@
     cpython_api, generic_cpy_call, CANNOT_FAIL, CConfig, cpython_struct)
 from pypy.rpython.lltypesystem import rffi, lltype
 
-PyInterpreterState = lltype.Ptr(cpython_struct("PyInterpreterState", ()))
+PyInterpreterStateStruct = lltype.ForwardReference()
+PyInterpreterState = lltype.Ptr(PyInterpreterStateStruct)
+cpython_struct(
+    "PyInterpreterState", [('next', PyInterpreterState)], PyInterpreterStateStruct)
 PyThreadState = lltype.Ptr(cpython_struct("PyThreadState", [('interp', PyInterpreterState)]))
 
 @cpython_api([], PyThreadState, error=CANNOT_FAIL)
@@ -54,7 +57,8 @@
 
 class InterpreterState(object):
     def __init__(self, space):
-        self.interpreter_state = lltype.malloc(PyInterpreterState.TO, flavor='raw', immortal=True)
+        self.interpreter_state = lltype.malloc(
+            PyInterpreterState.TO, flavor='raw', zero=True, immortal=True)
 
     def new_thread_state(self):
         capsule = ThreadStateCapsule()
diff --git a/pypy/module/cpyext/stubs.py b/pypy/module/cpyext/stubs.py
--- a/pypy/module/cpyext/stubs.py
+++ b/pypy/module/cpyext/stubs.py
@@ -34,141 +34,6 @@
 
 @cpython_api([PyObject], rffi.INT_real, error=CANNOT_FAIL)
 def PyObject_CheckBuffer(space, obj):
-    """Return 1 if obj supports the buffer interface otherwise 0."""
-    raise NotImplementedError
-
- at cpython_api([PyObject, Py_buffer, rffi.INT_real], rffi.INT_real, error=-1)
-def PyObject_GetBuffer(space, obj, view, flags):
-    """Export obj into a Py_buffer, view.  These arguments must
-    never be NULL.  The flags argument is a bit field indicating what
-    kind of buffer the caller is prepared to deal with and therefore what
-    kind of buffer the exporter is allowed to return.  The buffer interface
-    allows for complicated memory sharing possibilities, but some caller may
-    not be able to handle all the complexity but may want to see if the
-    exporter will let them take a simpler view to its memory.
-
-    Some exporters may not be able to share memory in every possible way and
-    may need to raise errors to signal to some consumers that something is
-    just not possible. These errors should be a BufferError unless
-    there is another error that is actually causing the problem. The
-    exporter can use flags information to simplify how much of the
-    Py_buffer structure is filled in with non-default values and/or
-    raise an error if the object can't support a simpler view of its memory.
-
-    0 is returned on success and -1 on error.
-
-    The following table gives possible values to the flags arguments.
-
-    Flag
-
-    Description
-
-    PyBUF_SIMPLE
-
-    This is the default flag state.  The returned
-    buffer may or may not have writable memory.  The
-    format of the data will be assumed to be unsigned
-    bytes.  This is a "stand-alone" flag constant. It
-    never needs to be '|'d to the others. The exporter
-    will raise an error if it cannot provide such a
-    contiguous buffer of bytes.
-
-    PyBUF_WRITABLE
-
-    The returned buffer must be writable.  If it is
-    not writable, then raise an error.
-
-    PyBUF_STRIDES
-
-    This implies PyBUF_ND. The returned
-    buffer must provide strides information (i.e. the
-    strides cannot be NULL). This would be used when
-    the consumer can handle strided, discontiguous
-    arrays.  Handling strides automatically assumes
-    you can handle shape.  The exporter can raise an
-    error if a strided representation of the data is
-    not possible (i.e. without the suboffsets).
-
-    PyBUF_ND
-
-    The returned buffer must provide shape
-    information. The memory will be assumed C-style
-    contiguous (last dimension varies the
-    fastest). The exporter may raise an error if it
-    cannot provide this kind of contiguous buffer. If
-    this is not given then shape will be NULL.
-
-    PyBUF_C_CONTIGUOUS
-    PyBUF_F_CONTIGUOUS
-    PyBUF_ANY_CONTIGUOUS
-
-    These flags indicate that the contiguity returned
-    buffer must be respectively, C-contiguous (last
-    dimension varies the fastest), Fortran contiguous
-    (first dimension varies the fastest) or either
-    one.  All of these flags imply
-    PyBUF_STRIDES and guarantee that the
-    strides buffer info structure will be filled in
-    correctly.
-
-    PyBUF_INDIRECT
-
-    This flag indicates the returned buffer must have
-    suboffsets information (which can be NULL if no
-    suboffsets are needed).  This can be used when
-    the consumer can handle indirect array
-    referencing implied by these suboffsets. This
-    implies PyBUF_STRIDES.
-
-    PyBUF_FORMAT
-
-    The returned buffer must have true format
-    information if this flag is provided. This would
-    be used when the consumer is going to be checking
-    for what 'kind' of data is actually stored. An
-    exporter should always be able to provide this
-    information if requested. If format is not
-    explicitly requested then the format must be
-    returned as NULL (which means 'B', or
-    unsigned bytes)
-
-    PyBUF_STRIDED
-
-    This is equivalent to (PyBUF_STRIDES |
-    PyBUF_WRITABLE).
-
-    PyBUF_STRIDED_RO
-
-    This is equivalent to (PyBUF_STRIDES).
-
-    PyBUF_RECORDS
-
-    This is equivalent to (PyBUF_STRIDES |
-    PyBUF_FORMAT | PyBUF_WRITABLE).
-
-    PyBUF_RECORDS_RO
-
-    This is equivalent to (PyBUF_STRIDES |
-    PyBUF_FORMAT).
-
-    PyBUF_FULL
-
-    This is equivalent to (PyBUF_INDIRECT |
-    PyBUF_FORMAT | PyBUF_WRITABLE).
-
-    PyBUF_FULL_RO
-
-    This is equivalent to (PyBUF_INDIRECT |
-    PyBUF_FORMAT).
-
-    PyBUF_CONTIG
-
-    This is equivalent to (PyBUF_ND |
-    PyBUF_WRITABLE).
-
-    PyBUF_CONTIG_RO
-
-    This is equivalent to (PyBUF_ND)."""
     raise NotImplementedError
 
 @cpython_api([rffi.CCHARP], Py_ssize_t, error=CANNOT_FAIL)
diff --git a/pypy/module/cpyext/test/test_pystate.py b/pypy/module/cpyext/test/test_pystate.py
--- a/pypy/module/cpyext/test/test_pystate.py
+++ b/pypy/module/cpyext/test/test_pystate.py
@@ -37,6 +37,7 @@
     def test_thread_state_interp(self, space, api):
         ts = api.PyThreadState_Get()
         assert ts.c_interp == api.PyInterpreterState_Head()
+        assert ts.c_interp.c_next == nullptr(PyInterpreterState.TO)
 
     def test_basic_threadstate_dance(self, space, api):
         # Let extension modules call these functions,
diff --git a/pypy/module/micronumpy/__init__.py b/pypy/module/micronumpy/__init__.py
--- a/pypy/module/micronumpy/__init__.py
+++ b/pypy/module/micronumpy/__init__.py
@@ -9,7 +9,7 @@
     appleveldefs = {}
 
 class Module(MixedModule):
-    applevel_name = 'numpypy'
+    applevel_name = '_numpypy'
 
     submodules = {
         'pypy': PyPyModule
@@ -48,6 +48,7 @@
         'int_': 'interp_boxes.W_LongBox',
         'inexact': 'interp_boxes.W_InexactBox',
         'floating': 'interp_boxes.W_FloatingBox',
+        'float_': 'interp_boxes.W_Float64Box',
         'float32': 'interp_boxes.W_Float32Box',
         'float64': 'interp_boxes.W_Float64Box',
     }
diff --git a/pypy/module/micronumpy/app_numpy.py b/pypy/module/micronumpy/app_numpy.py
--- a/pypy/module/micronumpy/app_numpy.py
+++ b/pypy/module/micronumpy/app_numpy.py
@@ -1,6 +1,6 @@
 import math
 
-import numpypy
+import _numpypy
 
 
 inf = float("inf")
@@ -14,29 +14,29 @@
     return mean(a)
 
 def identity(n, dtype=None):
-    a = numpypy.zeros((n,n), dtype=dtype)
+    a = _numpypy.zeros((n,n), dtype=dtype)
     for i in range(n):
         a[i][i] = 1
     return a
 
 def mean(a):
     if not hasattr(a, "mean"):
-        a = numpypy.array(a)
+        a = _numpypy.array(a)
     return a.mean()
 
 def sum(a):
     if not hasattr(a, "sum"):
-        a = numpypy.array(a)
+        a = _numpypy.array(a)
     return a.sum()
 
 def min(a):
     if not hasattr(a, "min"):
-        a = numpypy.array(a)
+        a = _numpypy.array(a)
     return a.min()
 
 def max(a):
     if not hasattr(a, "max"):
-        a = numpypy.array(a)
+        a = _numpypy.array(a)
     return a.max()
 
 def arange(start, stop=None, step=1, dtype=None):
@@ -47,9 +47,9 @@
         stop = start
         start = 0
     if dtype is None:
-        test = numpypy.array([start, stop, step, 0])
+        test = _numpypy.array([start, stop, step, 0])
         dtype = test.dtype
-    arr = numpypy.zeros(int(math.ceil((stop - start) / step)), dtype=dtype)
+    arr = _numpypy.zeros(int(math.ceil((stop - start) / step)), dtype=dtype)
     i = start
     for j in range(arr.size):
         arr[j] = i
@@ -90,5 +90,5 @@
     you should assign the new shape to the shape attribute of the array
 '''
     if not hasattr(a, 'reshape'):
-        a = numpypy.array(a)
+        a = _numpypy.array(a)
     return a.reshape(shape)
diff --git a/pypy/module/micronumpy/interp_boxes.py b/pypy/module/micronumpy/interp_boxes.py
--- a/pypy/module/micronumpy/interp_boxes.py
+++ b/pypy/module/micronumpy/interp_boxes.py
@@ -78,6 +78,7 @@
     descr_sub = _binop_impl("subtract")
     descr_mul = _binop_impl("multiply")
     descr_div = _binop_impl("divide")
+    descr_pow = _binop_impl("power")
     descr_eq = _binop_impl("equal")
     descr_ne = _binop_impl("not_equal")
     descr_lt = _binop_impl("less")
@@ -170,6 +171,7 @@
     __sub__ = interp2app(W_GenericBox.descr_sub),
     __mul__ = interp2app(W_GenericBox.descr_mul),
     __div__ = interp2app(W_GenericBox.descr_div),
+    __pow__ = interp2app(W_GenericBox.descr_pow),
 
     __radd__ = interp2app(W_GenericBox.descr_radd),
     __rsub__ = interp2app(W_GenericBox.descr_rsub),
@@ -245,6 +247,7 @@
     long_name = "int64"
 W_LongBox.typedef = TypeDef(long_name, (W_SignedIntegerBox.typedef, int_typedef,),
     __module__ = "numpypy",
+   __new__ = interp2app(W_LongBox.descr__new__.im_func),
 )
 
 W_ULongBox.typedef = TypeDef("u" + long_name, W_UnsignedIntegerBox.typedef,
diff --git a/pypy/module/micronumpy/interp_numarray.py b/pypy/module/micronumpy/interp_numarray.py
--- a/pypy/module/micronumpy/interp_numarray.py
+++ b/pypy/module/micronumpy/interp_numarray.py
@@ -380,6 +380,9 @@
     def descr_get_dtype(self, space):
         return space.wrap(self.find_dtype())
 
+    def descr_get_ndim(self, space):
+        return space.wrap(len(self.shape))
+
     @jit.unroll_safe
     def descr_get_shape(self, space):
         return space.newtuple([space.wrap(i) for i in self.shape])
@@ -409,7 +412,7 @@
     def descr_repr(self, space):
         res = StringBuilder()
         res.append("array(")
-        concrete = self.get_concrete()
+        concrete = self.get_concrete_or_scalar()
         dtype = concrete.find_dtype()
         if not concrete.size:
             res.append('[]')
@@ -422,8 +425,9 @@
         else:
             concrete.to_str(space, 1, res, indent='       ')
         if (dtype is not interp_dtype.get_dtype_cache(space).w_float64dtype and
-            dtype is not interp_dtype.get_dtype_cache(space).w_int64dtype) or \
-            not self.size:
+            not (dtype.kind == interp_dtype.SIGNEDLTR and
+            dtype.itemtype.get_element_size() == rffi.sizeof(lltype.Signed)) or
+            not self.size):
             res.append(", dtype=" + dtype.name)
         res.append(")")
         return space.wrap(res.build())
@@ -559,6 +563,18 @@
     def descr_mean(self, space):
         return space.div(self.descr_sum(space), space.wrap(self.size))
 
+    def descr_var(self, space):
+        # var = mean((values - mean(values)) ** 2)
+        w_res = self.descr_sub(space, self.descr_mean(space))
+        assert isinstance(w_res, BaseArray) 
+        w_res = w_res.descr_pow(space, space.wrap(2))
+        assert isinstance(w_res, BaseArray)
+        return w_res.descr_mean(space)
+
+    def descr_std(self, space):
+        # std(v) = sqrt(var(v))
+        return interp_ufuncs.get(space).sqrt.call(space, [self.descr_var(space)])
+
     def descr_nonzero(self, space):
         if self.size > 1:
             raise OperationError(space.w_ValueError, space.wrap(
@@ -840,80 +856,80 @@
         each line will begin with indent.
         '''
         size = self.size
+        ccomma = ',' * comma
+        ncomma = ',' * (1 - comma)
+        dtype = self.find_dtype()
         if size < 1:
             builder.append('[]')
             return
+        elif size == 1:
+            builder.append(dtype.itemtype.str_format(self.getitem(0)))
+            return
         if size > 1000:
             # Once this goes True it does not go back to False for recursive
             # calls
             use_ellipsis = True
-        dtype = self.find_dtype()
         ndims = len(self.shape)
         i = 0
-        start = True
         builder.append('[')
         if ndims > 1:
             if use_ellipsis:
-                for i in range(3):
-                    if start:
-                        start = False
-                    else:
-                        builder.append(',' * comma + '\n')
-                        if ndims == 3:
+                for i in range(min(3, self.shape[0])):
+                    if i > 0:
+                        builder.append(ccomma + '\n')
+                        if ndims >= 3:
                             builder.append('\n' + indent)
                         else:
                             builder.append(indent)
-                    # create_slice requires len(chunks) > 1 in order to reduce
-                    # shape
-                    view = self.create_slice([(i, 0, 0, 1), (0, self.shape[1], 1, self.shape[1])]).get_concrete()
-                    view.to_str(space, comma, builder, indent=indent + ' ', use_ellipsis=use_ellipsis)
-                builder.append('\n' + indent + '..., ')
-                i = self.shape[0] - 3
+                    view = self.create_slice([(i, 0, 0, 1)]).get_concrete()
+                    view.to_str(space, comma, builder, indent=indent + ' ',
+                                                    use_ellipsis=use_ellipsis)
+                if i < self.shape[0] - 1:
+                    builder.append(ccomma +'\n' + indent + '...' + ncomma)
+                    i = self.shape[0] - 3
+                else:
+                    i += 1
             while i < self.shape[0]:
-                if start:
-                    start = False
-                else:
-                    builder.append(',' * comma + '\n')
-                    if ndims == 3:
+                if i > 0:
+                    builder.append(ccomma + '\n')
+                    if ndims >= 3:
                         builder.append('\n' + indent)
                     else:
                         builder.append(indent)
                 # create_slice requires len(chunks) > 1 in order to reduce
                 # shape
-                view = self.create_slice([(i, 0, 0, 1), (0, self.shape[1], 1, self.shape[1])]).get_concrete()
-                view.to_str(space, comma, builder, indent=indent + ' ', use_ellipsis=use_ellipsis)
+                view = self.create_slice([(i, 0, 0, 1)]).get_concrete()
+                view.to_str(space, comma, builder, indent=indent + ' ',
+                                                    use_ellipsis=use_ellipsis)
                 i += 1
         elif ndims == 1:
-            spacer = ',' * comma + ' '
+            spacer = ccomma + ' '
             item = self.start
             # An iterator would be a nicer way to walk along the 1d array, but
             # how do I reset it if printing ellipsis? iterators have no
             # "set_offset()"
             i = 0
             if use_ellipsis:
-                for i in range(3):
-                    if start:
-                        start = False
-                    else:
+                for i in range(min(3, self.shape[0])):
+                    if i > 0:
                         builder.append(spacer)
                     builder.append(dtype.itemtype.str_format(self.getitem(item)))
                     item += self.strides[0]
-                # Add a comma only if comma is False - this prevents adding two
-                # commas
-                builder.append(spacer + '...' + ',' * (1 - comma))
-                # Ugly, but can this be done with an iterator?
-                item = self.start + self.backstrides[0] - 2 * self.strides[0]
-                i = self.shape[0] - 3
+                if i < self.shape[0] - 1:
+                    # Add a comma only if comma is False - this prevents adding
+                    # two commas
+                    builder.append(spacer + '...' + ncomma)
+                    # Ugly, but can this be done with an iterator?
+                    item = self.start + self.backstrides[0] - 2 * self.strides[0]
+                    i = self.shape[0] - 3
+                else:
+                    i += 1
             while i < self.shape[0]:
-                if start:
-                    start = False
-                else:
+                if i > 0:
                     builder.append(spacer)
                 builder.append(dtype.itemtype.str_format(self.getitem(item)))
                 item += self.strides[0]
                 i += 1
-        else:
-            builder.append('[')
         builder.append(']')
 
     @jit.unroll_safe
@@ -1185,6 +1201,7 @@
     shape = GetSetProperty(BaseArray.descr_get_shape,
                            BaseArray.descr_set_shape),
     size = GetSetProperty(BaseArray.descr_get_size),
+    ndim = GetSetProperty(BaseArray.descr_get_ndim),
 
     T = GetSetProperty(BaseArray.descr_get_transpose),
     flat = GetSetProperty(BaseArray.descr_get_flatiter),
@@ -1199,6 +1216,8 @@
     all = interp2app(BaseArray.descr_all),
     any = interp2app(BaseArray.descr_any),
     dot = interp2app(BaseArray.descr_dot),
+    var = interp2app(BaseArray.descr_var),
+    std = interp2app(BaseArray.descr_std),
 
     copy = interp2app(BaseArray.descr_copy),
     reshape = interp2app(BaseArray.descr_reshape),
diff --git a/pypy/module/micronumpy/test/test_dtypes.py b/pypy/module/micronumpy/test/test_dtypes.py
--- a/pypy/module/micronumpy/test/test_dtypes.py
+++ b/pypy/module/micronumpy/test/test_dtypes.py
@@ -3,7 +3,7 @@
 
 class AppTestDtypes(BaseNumpyAppTest):
     def test_dtype(self):
-        from numpypy import dtype
+        from _numpypy import dtype
 
         d = dtype('?')
         assert d.num == 0
@@ -14,7 +14,7 @@
         raises(TypeError, dtype, 1042)
 
     def test_dtype_with_types(self):
-        from numpypy import dtype
+        from _numpypy import dtype
 
         assert dtype(bool).num == 0
         assert dtype(int).num == 7
@@ -22,13 +22,13 @@
         assert dtype(float).num == 12
 
     def test_array_dtype_attr(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
 
         a = array(range(5), long)
         assert a.dtype is dtype(long)
 
     def test_repr_str(self):
-        from numpypy import dtype
+        from _numpypy import dtype
 
         assert repr(dtype) == "<type 'numpypy.dtype'>"
         d = dtype('?')
@@ -36,7 +36,7 @@
         assert str(d) == "bool"
 
     def test_bool_array(self):
-        from numpypy import array, False_, True_
+        from _numpypy import array, False_, True_
 
         a = array([0, 1, 2, 2.5], dtype='?')
         assert a[0] is False_
@@ -44,7 +44,7 @@
             assert a[i] is True_
 
     def test_copy_array_with_dtype(self):
-        from numpypy import array, False_, True_, int64
+        from _numpypy import array, False_, True_, int64
 
         a = array([0, 1, 2, 3], dtype=long)
         # int on 64-bit, long in 32-bit
@@ -58,35 +58,35 @@
         assert b[0] is False_
 
     def test_zeros_bool(self):
-        from numpypy import zeros, False_
+        from _numpypy import zeros, False_
 
         a = zeros(10, dtype=bool)
         for i in range(10):
             assert a[i] is False_
 
     def test_ones_bool(self):
-        from numpypy import ones, True_
+        from _numpypy import ones, True_
 
         a = ones(10, dtype=bool)
         for i in range(10):
             assert a[i] is True_
 
     def test_zeros_long(self):
-        from numpypy import zeros, int64
+        from _numpypy import zeros, int64
         a = zeros(10, dtype=long)
         for i in range(10):
             assert isinstance(a[i], int64)
             assert a[1] == 0
 
     def test_ones_long(self):
-        from numpypy import ones, int64
+        from _numpypy import ones, int64
         a = ones(10, dtype=long)
         for i in range(10):
             assert isinstance(a[i], int64)
             assert a[1] == 1
 
     def test_overflow(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
         assert array([128], 'b')[0] == -128
         assert array([256], 'B')[0] == 0
         assert array([32768], 'h')[0] == -32768
@@ -98,7 +98,7 @@
         raises(OverflowError, "array([2**64], 'Q')")
 
     def test_bool_binop_types(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
         types = [
             '?', 'b', 'B', 'h', 'H', 'i', 'I', 'l', 'L', 'q', 'Q', 'f', 'd'
         ]
@@ -107,7 +107,7 @@
             assert (a + array([0], t)).dtype is dtype(t)
 
     def test_binop_types(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
         tests = [('b','B','h'), ('b','h','h'), ('b','H','i'), ('b','i','i'),
                  ('b','l','l'), ('b','q','q'), ('b','Q','d'), ('B','h','h'),
                  ('B','H','H'), ('B','i','i'), ('B','I','I'), ('B','l','l'),
@@ -129,7 +129,7 @@
             assert (array([1], d1) + array([1], d2)).dtype is dtype(dout)
 
     def test_add_int8(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
 
         a = array(range(5), dtype="int8")
         b = a + a
@@ -138,7 +138,7 @@
             assert b[i] == i * 2
 
     def test_add_int16(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
 
         a = array(range(5), dtype="int16")
         b = a + a
@@ -147,7 +147,7 @@
             assert b[i] == i * 2
 
     def test_add_uint32(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
 
         a = array(range(5), dtype="I")
         b = a + a
@@ -156,19 +156,28 @@
             assert b[i] == i * 2
 
     def test_shape(self):
-        from numpypy import dtype
+        from _numpypy import dtype
 
         assert dtype(long).shape == ()
 
     def test_cant_subclass(self):
-        from numpypy import dtype
+        from _numpypy import dtype
 
         # You can't subclass dtype
         raises(TypeError, type, "Foo", (dtype,), {})
 
+    def test_new(self):
+        import _numpypy as np
+        assert np.int_(4) == 4
+        assert np.float_(3.4) == 3.4
+
+    def test_pow(self):
+        from _numpypy import int_
+        assert int_(4) ** 2 == 16
+
 class AppTestTypes(BaseNumpyAppTest):
     def test_abstract_types(self):
-        import numpypy as numpy
+        import _numpypy as numpy
         raises(TypeError, numpy.generic, 0)
         raises(TypeError, numpy.number, 0)
         raises(TypeError, numpy.integer, 0)
@@ -181,7 +190,7 @@
         raises(TypeError, numpy.inexact, 0)
 
     def test_bool(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.bool_.mro() == [numpy.bool_, numpy.generic, object]
         assert numpy.bool_(3) is numpy.True_
@@ -196,7 +205,7 @@
         assert numpy.bool_("False") is numpy.True_
 
     def test_int8(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.int8.mro() == [numpy.int8, numpy.signedinteger, numpy.integer, numpy.number, numpy.generic, object]
 
@@ -218,7 +227,7 @@
         assert numpy.int8('128') == -128
 
     def test_uint8(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.uint8.mro() == [numpy.uint8, numpy.unsignedinteger, numpy.integer, numpy.number, numpy.generic, object]
 
@@ -241,7 +250,7 @@
         assert numpy.uint8('256') == 0
 
     def test_int16(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         x = numpy.int16(3)
         assert x == 3
@@ -251,7 +260,7 @@
         assert numpy.int16('32768') == -32768
 
     def test_uint16(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.uint16(65535) == 65535
         assert numpy.uint16(65536) == 0
@@ -260,7 +269,7 @@
 
     def test_int32(self):
         import sys
-        import numpypy as numpy
+        import _numpypy as numpy
 
         x = numpy.int32(23)
         assert x == 23
@@ -275,7 +284,7 @@
 
     def test_uint32(self):
         import sys
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.uint32(10) == 10
 
@@ -286,14 +295,14 @@
             assert numpy.uint32('4294967296') == 0
 
     def test_int_(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.int_ is numpy.dtype(int).type
         assert numpy.int_.mro() == [numpy.int_, numpy.signedinteger, numpy.integer, numpy.number, numpy.generic, int, object]
 
     def test_int64(self):
         import sys
-        import numpypy as numpy
+        import _numpypy as numpy
 
         if sys.maxint == 2 ** 63 -1:
             assert numpy.int64.mro() == [numpy.int64, numpy.signedinteger, numpy.integer, numpy.number, numpy.generic, int, object]
@@ -315,7 +324,7 @@
 
     def test_uint64(self):
         import sys
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.uint64.mro() == [numpy.uint64, numpy.unsignedinteger, numpy.integer, numpy.number, numpy.generic, object]
 
@@ -330,7 +339,7 @@
         raises(OverflowError, numpy.uint64(18446744073709551616))
 
     def test_float32(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.float32.mro() == [numpy.float32, numpy.floating, numpy.inexact, numpy.number, numpy.generic, object]
 
@@ -339,7 +348,7 @@
         raises(ValueError, numpy.float32, '23.2df')
 
     def test_float64(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         assert numpy.float64.mro() == [numpy.float64, numpy.floating, numpy.inexact, numpy.number, numpy.generic, float, object]
 
@@ -352,7 +361,7 @@
         raises(ValueError, numpy.float64, '23.2df')
 
     def test_subclass_type(self):
-        import numpypy as numpy
+        import _numpypy as numpy
 
         class X(numpy.float64):
             def m(self):
diff --git a/pypy/module/micronumpy/test/test_module.py b/pypy/module/micronumpy/test/test_module.py
--- a/pypy/module/micronumpy/test/test_module.py
+++ b/pypy/module/micronumpy/test/test_module.py
@@ -3,33 +3,33 @@
 
 class AppTestNumPyModule(BaseNumpyAppTest):
     def test_mean(self):
-        from numpypy import array, mean
+        from _numpypy import array, mean
         assert mean(array(range(5))) == 2.0
         assert mean(range(5)) == 2.0
 
     def test_average(self):
-        from numpypy import array, average
+        from _numpypy import array, average
         assert average(range(10)) == 4.5
         assert average(array(range(10))) == 4.5
         
     def test_sum(self):
-        from numpypy import array, sum
+        from _numpypy import array, sum
         assert sum(range(10)) == 45
         assert sum(array(range(10))) == 45
 
     def test_min(self):
-        from numpypy import array, min
+        from _numpypy import array, min
         assert min(range(10)) == 0
         assert min(array(range(10))) == 0
         
     def test_max(self):
-        from numpypy import array, max
+        from _numpypy import array, max
         assert max(range(10)) == 9
         assert max(array(range(10))) == 9
 
     def test_constants(self):
         import math
-        from numpypy import inf, e, pi
+        from _numpypy import inf, e, pi
         assert type(inf) is float
         assert inf == float("inf")
         assert e == math.e
diff --git a/pypy/module/micronumpy/test/test_numarray.py b/pypy/module/micronumpy/test/test_numarray.py
--- a/pypy/module/micronumpy/test/test_numarray.py
+++ b/pypy/module/micronumpy/test/test_numarray.py
@@ -158,9 +158,10 @@
         assert calc_new_strides([24], [2, 4, 3], [48, 6, 1]) is None
         assert calc_new_strides([24], [2, 4, 3], [24, 6, 2]) == [2]
 
+
 class AppTestNumArray(BaseNumpyAppTest):
     def test_ndarray(self):
-        from numpypy import ndarray, array, dtype
+        from _numpypy import ndarray, array, dtype
 
         assert type(ndarray) is type
         assert type(array) is not type
@@ -175,12 +176,26 @@
         assert a.dtype is dtype(int)
 
     def test_type(self):
-        from numpypy import array
+        from _numpypy import array
         ar = array(range(5))
         assert type(ar) is type(ar + ar)
 
+    def test_ndim(self):
+        from _numpypy import array
+        x = array(0.2)
+        assert x.ndim == 0
+        x = array([1, 2])
+        assert x.ndim == 1
+        x = array([[1, 2], [3, 4]])
+        assert x.ndim == 2
+        x = array([[[1, 2], [3, 4]], [[5, 6], [7, 8]]])
+        assert x.ndim == 3
+        # numpy actually raises an AttributeError, but _numpypy raises an
+        # TypeError
+        raises(TypeError, 'x.ndim = 3')
+
     def test_init(self):
-        from numpypy import zeros
+        from _numpypy import zeros
         a = zeros(15)
         # Check that storage was actually zero'd.
         assert a[10] == 0.0
@@ -189,7 +204,7 @@
         assert a[13] == 5.3
 
     def test_size(self):
-        from numpypy import array
+        from _numpypy import array
         assert array(3).size == 1
         a = array([1, 2, 3])
         assert a.size == 3
@@ -200,13 +215,13 @@
         Test that empty() works.
         """
 
-        from numpypy import empty
+        from _numpypy import empty
         a = empty(2)
         a[1] = 1.0
         assert a[1] == 1.0
 
     def test_ones(self):
-        from numpypy import ones
+        from _numpypy import ones
         a = ones(3)
         assert len(a) == 3
         assert a[0] == 1
@@ -215,7 +230,7 @@
         assert a[2] == 4
 
     def test_copy(self):
-        from numpypy import arange, array
+        from _numpypy import arange, array
         a = arange(5)
         b = a.copy()
         for i in xrange(5):
@@ -232,12 +247,12 @@
         assert (c == b).all()
 
     def test_iterator_init(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         assert a[3] == 3
 
     def test_getitem(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         raises(IndexError, "a[5]")
         a = a + a
@@ -246,7 +261,7 @@
         raises(IndexError, "a[-6]")
 
     def test_getitem_tuple(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         raises(IndexError, "a[(1,2)]")
         for i in xrange(5):
@@ -256,7 +271,7 @@
             assert a[i] == b[i]
 
     def test_setitem(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         a[-1] = 5.0
         assert a[4] == 5.0
@@ -264,7 +279,7 @@
         raises(IndexError, "a[-6] = 3.0")
 
     def test_setitem_tuple(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         raises(IndexError, "a[(1,2)] = [0,1]")
         for i in xrange(5):
@@ -275,7 +290,7 @@
             assert a[i] == i
 
     def test_setslice_array(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = array(range(2))
         a[1:4:2] = b
@@ -286,7 +301,7 @@
         assert b[1] == 0.
 
     def test_setslice_of_slice_array(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
         a = zeros(5)
         a[::2] = array([9., 10., 11.])
         assert a[0] == 9.
@@ -305,7 +320,7 @@
         assert a[0] == 3.
 
     def test_setslice_list(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5), float)
         b = [0., 1.]
         a[1:4:2] = b
@@ -313,14 +328,14 @@
         assert a[3] == 1.
 
     def test_setslice_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5), float)
         a[1:4:2] = 0.
         assert a[1] == 0.
         assert a[3] == 0.
 
     def test_scalar(self):
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
         a = array(3)
         raises(IndexError, "a[0]")
         raises(IndexError, "a[0] = 5")
@@ -329,13 +344,13 @@
         assert a.dtype is dtype(int)
 
     def test_len(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         assert len(a) == 5
         assert len(a + a) == 5
 
     def test_shape(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         assert a.shape == (5,)
         b = a + a
@@ -344,7 +359,7 @@
         assert c.shape == (3,)
 
     def test_set_shape(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
         a = array([])
         a.shape = []
         a = array(range(12))
@@ -364,7 +379,7 @@
         a.shape = (1,)
 
     def test_reshape(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
         a = array(range(12))
         exc = raises(ValueError, "b = a.reshape((3, 10))")
         assert str(exc.value) == "total size of new array must be unchanged"
@@ -377,7 +392,7 @@
         a.shape = (12, 2)
 
     def test_slice_reshape(self):
-        from numpypy import zeros, arange
+        from _numpypy import zeros, arange
         a = zeros((4, 2, 3))
         b = a[::2, :, :]
         b.shape = (2, 6)
@@ -413,13 +428,13 @@
         raises(ValueError, arange(10).reshape, (5, -1, -1))
 
     def test_reshape_varargs(self):
-        from numpypy import arange
+        from _numpypy import arange
         z = arange(96).reshape(12, -1)
         y = z.reshape(4, 3, 8)
         assert y.shape == (4, 3, 8)
 
     def test_add(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a + a
         for i in range(5):
@@ -432,7 +447,7 @@
             assert c[i] == bool(a[i] + b[i])
 
     def test_add_other(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = array([i for i in reversed(range(5))])
         c = a + b
@@ -440,20 +455,20 @@
             assert c[i] == 4
 
     def test_add_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a + 5
         for i in range(5):
             assert b[i] == i + 5
 
     def test_radd(self):
-        from numpypy import array
+        from _numpypy import array
         r = 3 + array(range(3))
         for i in range(3):
             assert r[i] == i + 3
 
     def test_add_list(self):
-        from numpypy import array, ndarray
+        from _numpypy import array, ndarray
         a = array(range(5))
         b = list(reversed(range(5)))
         c = a + b
@@ -462,14 +477,14 @@
             assert c[i] == 4
 
     def test_subtract(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a - a
         for i in range(5):
             assert b[i] == 0
 
     def test_subtract_other(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = array([1, 1, 1, 1, 1])
         c = a - b
@@ -477,34 +492,34 @@
             assert c[i] == i - 1
 
     def test_subtract_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a - 5
         for i in range(5):
             assert b[i] == i - 5
 
     def test_scalar_subtract(self):
-        from numpypy import int32
+        from _numpypy import int32
         assert int32(2) - 1 == 1
         assert 1 - int32(2) == -1
 
     def test_mul(self):
-        import numpypy
+        import _numpypy
 
-        a = numpypy.array(range(5))
+        a = _numpypy.array(range(5))
         b = a * a
         for i in range(5):
             assert b[i] == i * i
 
-        a = numpypy.array(range(5), dtype=bool)
+        a = _numpypy.array(range(5), dtype=bool)
         b = a * a
-        assert b.dtype is numpypy.dtype(bool)
-        assert b[0] is numpypy.False_
+        assert b.dtype is _numpypy.dtype(bool)
+        assert b[0] is _numpypy.False_
         for i in range(1, 5):
-            assert b[i] is numpypy.True_
+            assert b[i] is _numpypy.True_
 
     def test_mul_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a * 5
         for i in range(5):
@@ -512,7 +527,7 @@
 
     def test_div(self):
         from math import isnan
-        from numpypy import array, dtype, inf
+        from _numpypy import array, dtype, inf
 
         a = array(range(1, 6))
         b = a / a
@@ -544,7 +559,7 @@
         assert c[2] == -inf
 
     def test_div_other(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = array([2, 2, 2, 2, 2], float)
         c = a / b
@@ -552,14 +567,14 @@
             assert c[i] == i / 2.0
 
     def test_div_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a / 5.0
         for i in range(5):
             assert b[i] == i / 5.0
 
     def test_pow(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5), float)
         b = a ** a
         for i in range(5):
@@ -569,7 +584,7 @@
         assert (a ** 2 == a * a).all()
 
     def test_pow_other(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5), float)
         b = array([2, 2, 2, 2, 2])
         c = a ** b
@@ -577,14 +592,14 @@
             assert c[i] == i ** 2
 
     def test_pow_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5), float)
         b = a ** 2
         for i in range(5):
             assert b[i] == i ** 2
 
     def test_mod(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(1, 6))
         b = a % a
         for i in range(5):
@@ -597,7 +612,7 @@
             assert b[i] == 1
 
     def test_mod_other(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = array([2, 2, 2, 2, 2])
         c = a % b
@@ -605,14 +620,14 @@
             assert c[i] == i % 2
 
     def test_mod_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a % 2
         for i in range(5):
             assert b[i] == i % 2
 
     def test_pos(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([1., -2., 3., -4., -5.])
         b = +a
         for i in range(5):
@@ -623,7 +638,7 @@
             assert a[i] == i
 
     def test_neg(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([1., -2., 3., -4., -5.])
         b = -a
         for i in range(5):
@@ -634,7 +649,7 @@
             assert a[i] == -i
 
     def test_abs(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([1., -2., 3., -4., -5.])
         b = abs(a)
         for i in range(5):
@@ -645,7 +660,7 @@
             assert a[i + 5] == abs(i)
 
     def test_auto_force(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a - 1
         a[2] = 3
@@ -659,7 +674,7 @@
         assert c[1] == 4
 
     def test_getslice(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         s = a[1:5]
         assert len(s) == 4
@@ -673,7 +688,7 @@
         assert s[0] == 5
 
     def test_getslice_step(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(10))
         s = a[1:9:2]
         assert len(s) == 4
@@ -681,7 +696,7 @@
             assert s[i] == a[2 * i + 1]
 
     def test_slice_update(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         s = a[0:3]
         s[1] = 10
@@ -691,7 +706,7 @@
 
     def test_slice_invaidate(self):
         # check that slice shares invalidation list with
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         s = a[0:2]
         b = array([10, 11])
@@ -705,13 +720,13 @@
         assert d[1] == 12
 
     def test_mean(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         assert a.mean() == 2.0
         assert a[:4].mean() == 1.5
 
     def test_sum(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         assert a.sum() == 10.0
         assert a[:4].sum() == 6.0
@@ -720,52 +735,52 @@
         assert a.sum() == 5
 
     def test_identity(self):
-        from numpypy import identity, array
-        from numpypy import int32, float64, dtype
+        from _numpypy import identity, array
+        from _numpypy import int32, float64, dtype
         a = identity(0)
         assert len(a) == 0
         assert a.dtype == dtype('float64')
-        assert a.shape == (0,0)
+        assert a.shape == (0, 0)
         b = identity(1, dtype=int32)
         assert len(b) == 1
         assert b[0][0] == 1
-        assert b.shape == (1,1)
+        assert b.shape == (1, 1)
         assert b.dtype == dtype('int32')
         c = identity(2)
-        assert c.shape == (2,2)
-        assert (c == [[1,0],[0,1]]).all()
+        assert c.shape == (2, 2)
+        assert (c == [[1, 0], [0, 1]]).all()
         d = identity(3, dtype='int32')
-        assert d.shape == (3,3)
+        assert d.shape == (3, 3)
         assert d.dtype == dtype('int32')
-        assert (d == [[1,0,0],[0,1,0],[0,0,1]]).all()
+        assert (d == [[1, 0, 0], [0, 1, 0], [0, 0, 1]]).all()
 
     def test_prod(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(1, 6))
         assert a.prod() == 120.0
         assert a[:4].prod() == 24.0
 
     def test_max(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([-1.2, 3.4, 5.7, -3.0, 2.7])
         assert a.max() == 5.7
         b = array([])
         raises(ValueError, "b.max()")
 
     def test_max_add(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([-1.2, 3.4, 5.7, -3.0, 2.7])
         assert (a + a).max() == 11.4
 
     def test_min(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([-1.2, 3.4, 5.7, -3.0, 2.7])
         assert a.min() == -3.0
         b = array([])
         raises(ValueError, "b.min()")
 
     def test_argmax(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([-1.2, 3.4, 5.7, -3.0, 2.7])
         r = a.argmax()
         assert r == 2
@@ -786,14 +801,14 @@
         assert a.argmax() == 2
 
     def test_argmin(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([-1.2, 3.4, 5.7, -3.0, 2.7])
         assert a.argmin() == 3
         b = array([])
         raises(ValueError, "b.argmin()")
 
     def test_all(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         assert a.all() == False
         a[0] = 3.0
@@ -802,7 +817,7 @@
         assert b.all() == True
 
     def test_any(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
         a = array(range(5))
         assert a.any() == True
         b = zeros(5)
@@ -811,7 +826,7 @@
         assert c.any() == False
 
     def test_dot(self):
-        from numpypy import array, dot
+        from _numpypy import array, dot
         a = array(range(5))
         assert a.dot(a) == 30.0
 
@@ -821,14 +836,14 @@
         assert (dot(5, [1, 2, 3]) == [5, 10, 15]).all()
 
     def test_dot_constant(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         b = a.dot(2.5)
         for i in xrange(5):
             assert b[i] == 2.5 * a[i]
 
     def test_dtype_guessing(self):
-        from numpypy import array, dtype, float64, int8, bool_
+        from _numpypy import array, dtype, float64, int8, bool_
 
         assert array([True]).dtype is dtype(bool)
         assert array([True, False]).dtype is dtype(bool)
@@ -845,7 +860,7 @@
 
     def test_comparison(self):
         import operator
-        from numpypy import array, dtype
+        from _numpypy import array, dtype
 
         a = array(range(5))
         b = array(range(5), float)
@@ -864,7 +879,7 @@
                 assert c[i] == func(b[i], 3)
 
     def test_nonzero(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([1, 2])
         raises(ValueError, bool, a)
         raises(ValueError, bool, a == a)
@@ -874,7 +889,7 @@
         assert not bool(array([0]))
 
     def test_slice_assignment(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         a[::-1] = a
         assert (a == [0, 1, 2, 1, 0]).all()
@@ -884,8 +899,8 @@
         assert (a == [8, 6, 4, 2, 0]).all()
 
     def test_debug_repr(self):
-        from numpypy import zeros, sin
-        from numpypy.pypy import debug_repr
+        from _numpypy import zeros, sin
+        from _numpypy.pypy import debug_repr
         a = zeros(1)
         assert debug_repr(a) == 'Array'
         assert debug_repr(a + a) == 'Call2(add, Array, Array)'
@@ -899,8 +914,8 @@
         assert debug_repr(b) == 'Array'
 
     def test_remove_invalidates(self):
-        from numpypy import array
-        from numpypy.pypy import remove_invalidates
+        from _numpypy import array
+        from _numpypy.pypy import remove_invalidates
         a = array([1, 2, 3])
         b = a + a
         remove_invalidates(a)
@@ -908,7 +923,7 @@
         assert b[0] == 28
 
     def test_virtual_views(self):
-        from numpypy import arange
+        from _numpypy import arange
         a = arange(15)
         c = (a + a)
         d = c[::2]
@@ -926,7 +941,7 @@
         assert b[1] == 2
 
     def test_tolist_scalar(self):
-        from numpypy import int32, bool_
+        from _numpypy import int32, bool_
         x = int32(23)
         assert x.tolist() == 23
         assert type(x.tolist()) is int
@@ -934,13 +949,13 @@
         assert y.tolist() is True
 
     def test_tolist_zerodim(self):
-        from numpypy import array
+        from _numpypy import array
         x = array(3)
         assert x.tolist() == 3
         assert type(x.tolist()) is int
 
     def test_tolist_singledim(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(range(5))
         assert a.tolist() == [0, 1, 2, 3, 4]
         assert type(a.tolist()[0]) is int
@@ -948,41 +963,55 @@
         assert b.tolist() == [0.2, 0.4, 0.6]
 
     def test_tolist_multidim(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[1, 2], [3, 4]])
         assert a.tolist() == [[1, 2], [3, 4]]
 
     def test_tolist_view(self):
-        from numpypy import array
-        a = array([[1,2],[3,4]])
+        from _numpypy import array
+        a = array([[1, 2], [3, 4]])
         assert (a + a).tolist() == [[2, 4], [6, 8]]
 
     def test_tolist_slice(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[17.1, 27.2], [40.3, 50.3]])
-        assert a[:,0].tolist() == [17.1, 40.3]
+        assert a[:, 0].tolist() == [17.1, 40.3]
         assert a[0].tolist() == [17.1, 27.2]
 
+    def test_var(self):
+        from _numpypy import array
+        a = array(range(10))
+        assert a.var() == 8.25
+        a = array([5.0])
+        assert a.var() == 0.0
+
+    def test_std(self):
+        from _numpypy import array
+        a = array(range(10))
+        assert a.std() == 2.8722813232690143
+        a = array([5.0])
+        assert a.std() == 0.0
+
 
 class AppTestMultiDim(BaseNumpyAppTest):
     def test_init(self):
-        import numpypy
-        a = numpypy.zeros((2, 2))
+        import _numpypy
+        a = _numpypy.zeros((2, 2))
         assert len(a) == 2
 
     def test_shape(self):
-        import numpypy
-        assert numpypy.zeros(1).shape == (1,)
-        assert numpypy.zeros((2, 2)).shape == (2, 2)
-        assert numpypy.zeros((3, 1, 2)).shape == (3, 1, 2)
-        assert numpypy.array([[1], [2], [3]]).shape == (3, 1)
-        assert len(numpypy.zeros((3, 1, 2))) == 3
-        raises(TypeError, len, numpypy.zeros(()))
-        raises(ValueError, numpypy.array, [[1, 2], 3])
+        import _numpypy
+        assert _numpypy.zeros(1).shape == (1,)
+        assert _numpypy.zeros((2, 2)).shape == (2, 2)
+        assert _numpypy.zeros((3, 1, 2)).shape == (3, 1, 2)
+        assert _numpypy.array([[1], [2], [3]]).shape == (3, 1)
+        assert len(_numpypy.zeros((3, 1, 2))) == 3
+        raises(TypeError, len, _numpypy.zeros(()))
+        raises(ValueError, _numpypy.array, [[1, 2], 3])
 
     def test_getsetitem(self):
-        import numpypy
-        a = numpypy.zeros((2, 3, 1))
+        import _numpypy
+        a = _numpypy.zeros((2, 3, 1))
         raises(IndexError, a.__getitem__, (2, 0, 0))
         raises(IndexError, a.__getitem__, (0, 3, 0))
         raises(IndexError, a.__getitem__, (0, 0, 1))
@@ -993,8 +1022,8 @@
         assert a[1, -1, 0] == 3
 
     def test_slices(self):
-        import numpypy
-        a = numpypy.zeros((4, 3, 2))
+        import _numpypy
+        a = _numpypy.zeros((4, 3, 2))
         raises(IndexError, a.__getitem__, (4,))
         raises(IndexError, a.__getitem__, (3, 3))
         raises(IndexError, a.__getitem__, (slice(None), 3))
@@ -1027,51 +1056,51 @@
         assert a[1][2][1] == 15
 
     def test_init_2(self):
-        import numpypy
-        raises(ValueError, numpypy.array, [[1], 2])
-        raises(ValueError, numpypy.array, [[1, 2], [3]])
-        raises(ValueError, numpypy.array, [[[1, 2], [3, 4], 5]])
-        raises(ValueError, numpypy.array, [[[1, 2], [3, 4], [5]]])
-        a = numpypy.array([[1, 2], [4, 5]])
+        import _numpypy
+        raises(ValueError, _numpypy.array, [[1], 2])
+        raises(ValueError, _numpypy.array, [[1, 2], [3]])
+        raises(ValueError, _numpypy.array, [[[1, 2], [3, 4], 5]])
+        raises(ValueError, _numpypy.array, [[[1, 2], [3, 4], [5]]])
+        a = _numpypy.array([[1, 2], [4, 5]])
         assert a[0, 1] == 2
         assert a[0][1] == 2
-        a = numpypy.array(([[[1, 2], [3, 4], [5, 6]]]))
+        a = _numpypy.array(([[[1, 2], [3, 4], [5, 6]]]))
         assert (a[0, 1] == [3, 4]).all()
 
     def test_setitem_slice(self):
-        import numpypy
-        a = numpypy.zeros((3, 4))
+        import _numpypy
+        a = _numpypy.zeros((3, 4))
         a[1] = [1, 2, 3, 4]
         assert a[1, 2] == 3
         raises(TypeError, a[1].__setitem__, [1, 2, 3])
-        a = numpypy.array([[1, 2], [3, 4]])
+        a = _numpypy.array([[1, 2], [3, 4]])
         assert (a == [[1, 2], [3, 4]]).all()
-        a[1] = numpypy.array([5, 6])
+        a[1] = _numpypy.array([5, 6])
         assert (a == [[1, 2], [5, 6]]).all()
-        a[:, 1] = numpypy.array([8, 10])
+        a[:, 1] = _numpypy.array([8, 10])
         assert (a == [[1, 8], [5, 10]]).all()
-        a[0, :: -1] = numpypy.array([11, 12])
+        a[0, :: -1] = _numpypy.array([11, 12])
         assert (a == [[12, 11], [5, 10]]).all()
 
     def test_ufunc(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[1, 2], [3, 4], [5, 6]])
         assert ((a + a) == \
             array([[1 + 1, 2 + 2], [3 + 3, 4 + 4], [5 + 5, 6 + 6]])).all()
 
     def test_getitem_add(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[1, 2], [3, 4], [5, 6], [7, 8], [9, 10]])
         assert (a + a)[1, 1] == 8
 
     def test_ufunc_negative(self):
-        from numpypy import array, negative
+        from _numpypy import array, negative
         a = array([[1, 2], [3, 4]])
         b = negative(a + a)
         assert (b == [[-2, -4], [-6, -8]]).all()
 
     def test_getitem_3(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[1, 2], [3, 4], [5, 6], [7, 8],
                    [9, 10], [11, 12], [13, 14]])
         b = a[::2]
@@ -1082,37 +1111,37 @@
         assert c[1][1] == 12
 
     def test_multidim_ones(self):
-        from numpypy import ones
+        from _numpypy import ones
         a = ones((1, 2, 3))
         assert a[0, 1, 2] == 1.0
 
     def test_multidim_setslice(self):
-        from numpypy import zeros, ones
+        from _numpypy import zeros, ones
         a = zeros((3, 3))
         b = ones((3, 3))
-        a[:,1:3] = b[:,1:3]
+        a[:, 1:3] = b[:, 1:3]
         assert (a == [[0, 1, 1], [0, 1, 1], [0, 1, 1]]).all()
         a = zeros((3, 3))
         b = ones((3, 3))
-        a[:,::2] = b[:,::2]
+        a[:, ::2] = b[:, ::2]
         assert (a == [[1, 0, 1], [1, 0, 1], [1, 0, 1]]).all()
 
     def test_broadcast_ufunc(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[1, 2], [3, 4], [5, 6]])
         b = array([5, 6])
         c = ((a + b) == [[1 + 5, 2 + 6], [3 + 5, 4 + 6], [5 + 5, 6 + 6]])
         assert c.all()
 
     def test_broadcast_setslice(self):
-        from numpypy import zeros, ones
+        from _numpypy import zeros, ones
         a = zeros((10, 10))
         b = ones(10)
         a[:, :] = b
         assert a[3, 5] == 1
 
     def test_broadcast_shape_agreement(self):
-        from numpypy import zeros, array
+        from _numpypy import zeros, array
         a = zeros((3, 1, 3))
         b = array(((10, 11, 12), (20, 21, 22), (30, 31, 32)))
         c = ((a + b) == [b, b, b])
@@ -1126,7 +1155,7 @@
         assert c.all()
 
     def test_broadcast_scalar(self):
-        from numpypy import zeros
+        from _numpypy import zeros
         a = zeros((4, 5), 'd')
         a[:, 1] = 3
         assert a[2, 1] == 3
@@ -1137,14 +1166,14 @@
         assert a[3, 2] == 0
 
     def test_broadcast_call2(self):
-        from numpypy import zeros, ones
+        from _numpypy import zeros, ones
         a = zeros((4, 1, 5))
         b = ones((4, 3, 5))
         b[:] = (a + a)
         assert (b == zeros((4, 3, 5))).all()
 
     def test_broadcast_virtualview(self):
-        from numpypy import arange, zeros
+        from _numpypy import arange, zeros
         a = arange(8).reshape([2, 2, 2])
         b = (a + a)[1, 1]
         c = zeros((2, 2, 2))
@@ -1152,13 +1181,13 @@
         assert (c == [[[12, 14], [12, 14]], [[12, 14], [12, 14]]]).all()
 
     def test_argmax(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[1, 2], [3, 4], [5, 6]])
         assert a.argmax() == 5
         assert a[:2, ].argmax() == 3
 
     def test_broadcast_wrong_shapes(self):
-        from numpypy import zeros
+        from _numpypy import zeros
         a = zeros((4, 3, 2))
         b = zeros((4, 2))
         exc = raises(ValueError, lambda: a + b)
@@ -1166,7 +1195,7 @@
             " together with shapes (4,3,2) (4,2)"
 
     def test_reduce(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]])
         assert a.sum() == (13 * 12) / 2
         b = a[1:, 1::2]
@@ -1174,7 +1203,7 @@
         assert c.sum() == (6 + 8 + 10 + 12) * 2
 
     def test_transpose(self):
-        from numpypy import array
+        from _numpypy import array
         a = array(((range(3), range(3, 6)),
                    (range(6, 9), range(9, 12)),
                    (range(12, 15), range(15, 18)),
@@ -1193,7 +1222,7 @@
         assert(b[:, 0] == a[0, :]).all()
 
     def test_flatiter(self):
-        from numpypy import array, flatiter
+        from _numpypy import array, flatiter
         a = array([[10, 30], [40, 60]])
         f_iter = a.flat
         assert f_iter.next() == 10
@@ -1208,23 +1237,23 @@
         assert s == 140
 
     def test_flatiter_array_conv(self):
-        from numpypy import array, dot
+        from _numpypy import array, dot
         a = array([1, 2, 3])
         assert dot(a.flat, a.flat) == 14
 
     def test_flatiter_varray(self):
-        from numpypy import ones
+        from _numpypy import ones
         a = ones((2, 2))
         assert list(((a + a).flat)) == [2, 2, 2, 2]
 
     def test_slice_copy(self):
-        from numpypy import zeros
+        from _numpypy import zeros
         a = zeros((10, 10))
         b = a[0].copy()
         assert (b == zeros(10)).all()
 
     def test_array_interface(self):
-        from numpypy import array
+        from _numpypy import array
         a = array([1, 2, 3])
         i = a.__array_interface__
         assert isinstance(i['data'][0], int)
@@ -1233,6 +1262,7 @@
         assert isinstance(i['data'][0], int)
         raises(TypeError, getattr, array(3), '__array_interface__')
 
+
 class AppTestSupport(BaseNumpyAppTest):
     def setup_class(cls):
         import struct
@@ -1245,7 +1275,7 @@
 
     def test_fromstring(self):
         import sys
-        from numpypy import fromstring, array, uint8, float32, int32
+        from _numpypy import fromstring, array, uint8, float32, int32
 
         a = fromstring(self.data)
         for i in range(4):
@@ -1275,17 +1305,17 @@
         assert g[1] == 2
         assert g[2] == 3
         h = fromstring("1, , 2, 3", dtype=uint8, sep=",")
-        assert (h == [1,0,2,3]).all()
+        assert (h == [1, 0, 2, 3]).all()
         i = fromstring("1    2 3", dtype=uint8, sep=" ")
-        assert (i == [1,2,3]).all()
+        assert (i == [1, 2, 3]).all()
         j = fromstring("1\t\t\t\t2\t3", dtype=uint8, sep="\t")
-        assert (j == [1,2,3]).all()
+        assert (j == [1, 2, 3]).all()
         k = fromstring("1,x,2,3", dtype=uint8, sep=",")
-        assert (k == [1,0]).all()
+        assert (k == [1, 0]).all()
         l = fromstring("1,x,2,3", dtype='float32', sep=",")
-        assert (l == [1.0,-1.0]).all()
+        assert (l == [1.0, -1.0]).all()
         m = fromstring("1,,2,3", sep=",")
-        assert (m == [1.0,-1.0,2.0,3.0]).all()
+        assert (m == [1.0, -1.0, 2.0, 3.0]).all()
         n = fromstring("3.4 2.0 3.8 2.2", dtype=int32, sep=" ")
         assert (n == [3]).all()
         o = fromstring("1.0 2f.0f 3.8 2.2", dtype=float32, sep=" ")
@@ -1309,7 +1339,7 @@
             assert (u == [1, 0]).all()
 
     def test_fromstring_types(self):
-        from numpypy import (fromstring, int8, int16, int32, int64, uint8,
+        from _numpypy import (fromstring, int8, int16, int32, int64, uint8,
             uint16, uint32, float32, float64)
 
         a = fromstring('\xFF', dtype=int8)
@@ -1333,9 +1363,8 @@
         j = fromstring(self.ulongval, dtype='L')
         assert j[0] == 12
 
-
     def test_fromstring_invalid(self):
-        from numpypy import fromstring, uint16, uint8, int32
+        from _numpypy import fromstring, uint16, uint8, int32
         #default dtype is 64-bit float, so 3 bytes should fail
         raises(ValueError, fromstring, "\x01\x02\x03")
         #3 bytes is not modulo 2 bytes (int16)
@@ -1346,7 +1375,8 @@
 
 class AppTestRepr(BaseNumpyAppTest):
     def test_repr(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
+        int_size = array(5).dtype.itemsize
         a = array(range(5), float)
         assert repr(a) == "array([0.0, 1.0, 2.0, 3.0, 4.0])"
         a = array([], float)
@@ -1354,14 +1384,26 @@
         a = zeros(1001)
         assert repr(a) == "array([0.0, 0.0, 0.0, ..., 0.0, 0.0, 0.0])"
         a = array(range(5), long)
-        assert repr(a) == "array([0, 1, 2, 3, 4])"
+        if a.dtype.itemsize == int_size:
+            assert repr(a) == "array([0, 1, 2, 3, 4])"
+        else:
+            assert repr(a) == "array([0, 1, 2, 3, 4], dtype=int64)"
+        a = array(range(5), 'int32')
+        if a.dtype.itemsize == int_size:
+            assert repr(a) == "array([0, 1, 2, 3, 4])"
+        else:
+            assert repr(a) == "array([0, 1, 2, 3, 4], dtype=int32)"
         a = array([], long)
         assert repr(a) == "array([], dtype=int64)"
         a = array([True, False, True, False], "?")
         assert repr(a) == "array([True, False, True, False], dtype=bool)"
+        a = zeros([])
+        assert repr(a) == "array(0.0)"
+        a = array(0.2)
+        assert repr(a) == "array(0.2)"
 
     def test_repr_multi(self):
-        from numpypy import array, zeros
+        from _numpypy import arange, zeros
         a = zeros((3, 4))
         assert repr(a) == '''array([[0.0, 0.0, 0.0, 0.0],
        [0.0, 0.0, 0.0, 0.0],
@@ -1374,9 +1416,19 @@
        [[0.0, 0.0, 0.0, 0.0],
         [0.0, 0.0, 0.0, 0.0],
         [0.0, 0.0, 0.0, 0.0]]])'''
+        a = arange(1002).reshape((2, 501))
+        assert repr(a) == '''array([[0, 1, 2, ..., 498, 499, 500],
+       [501, 502, 503, ..., 999, 1000, 1001]])'''
+        assert repr(a.T) == '''array([[0, 501],
+       [1, 502],
+       [2, 503],
+       ...,
+       [498, 999],
+       [499, 1000],
+       [500, 1001]])'''
 
     def test_repr_slice(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
         a = array(range(5), float)
         b = a[1::2]
         assert repr(b) == "array([1.0, 3.0])"
@@ -1391,7 +1443,7 @@
         assert repr(b) == "array([], shape=(0, 5), dtype=int16)"
 
     def test_str(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
         a = array(range(5), float)
         assert str(a) == "[0.0 1.0 2.0 3.0 4.0]"
         assert str((2 * a)[:]) == "[0.0 2.0 4.0 6.0 8.0]"
@@ -1417,14 +1469,14 @@
 
         a = zeros((400, 400), dtype=int)
         assert str(a) == "[[0 0 0 ..., 0 0 0]\n [0 0 0 ..., 0 0 0]\n" \
-           " [0 0 0 ..., 0 0 0]\n ..., \n [0 0 0 ..., 0 0 0]\n" \
+           " [0 0 0 ..., 0 0 0]\n ...,\n [0 0 0 ..., 0 0 0]\n" \
            " [0 0 0 ..., 0 0 0]\n [0 0 0 ..., 0 0 0]]"
         a = zeros((2, 2, 2))
         r = str(a)
         assert r == '[[[0.0 0.0]\n  [0.0 0.0]]\n\n [[0.0 0.0]\n  [0.0 0.0]]]'
 
     def test_str_slice(self):
-        from numpypy import array, zeros
+        from _numpypy import array, zeros
         a = array(range(5), float)
         b = a[1::2]
         assert str(b) == "[1.0 3.0]"
@@ -1440,7 +1492,7 @@
 
 class AppTestRanges(BaseNumpyAppTest):
     def test_arange(self):
-        from numpypy import arange, array, dtype
+        from _numpypy import arange, array, dtype
         a = arange(3)
         assert (a == [0, 1, 2]).all()
         assert a.dtype is dtype(int)
@@ -1462,7 +1514,7 @@
 
 class AppTestRanges(BaseNumpyAppTest):
     def test_app_reshape(self):
-        from numpypy import arange, array, dtype, reshape
+        from _numpypy import arange, array, dtype, reshape
         a = arange(12)
         b = reshape(a, (3, 4))
         assert b.shape == (3, 4)
diff --git a/pypy/module/micronumpy/test/test_ufuncs.py b/pypy/module/micronumpy/test/test_ufuncs.py
--- a/pypy/module/micronumpy/test/test_ufuncs.py
+++ b/pypy/module/micronumpy/test/test_ufuncs.py
@@ -4,14 +4,14 @@
 
 class AppTestUfuncs(BaseNumpyAppTest):
     def test_ufunc_instance(self):
-        from numpypy import add, ufunc
+        from _numpypy import add, ufunc
 
         assert isinstance(add, ufunc)
         assert repr(add) == "<ufunc 'add'>"
         assert repr(ufunc) == "<type 'numpypy.ufunc'>"
 
     def test_ufunc_attrs(self):
-        from numpypy import add, multiply, sin
+        from _numpypy import add, multiply, sin
 
         assert add.identity == 0
         assert multiply.identity == 1
@@ -22,7 +22,7 @@
         assert sin.nin == 1
 
     def test_wrong_arguments(self):
-        from numpypy import add, sin
+        from _numpypy import add, sin
 
         raises(ValueError, add, 1)
         raises(TypeError, add, 1, 2, 3)
@@ -30,14 +30,14 @@
         raises(ValueError, sin)
 
     def test_single_item(self):
-        from numpypy import negative, sign, minimum
+        from _numpypy import negative, sign, minimum
 
         assert negative(5.0) == -5.0
         assert sign(-0.0) == 0.0
         assert minimum(2.0, 3.0) == 2.0
 
     def test_sequence(self):
-        from numpypy import array, ndarray, negative, minimum
+        from _numpypy import array, ndarray, negative, minimum
         a = array(range(3))
         b = [2.0, 1.0, 0.0]
         c = 1.0
@@ -71,7 +71,7 @@
             assert min_c_b[i] == min(b[i], c)
 
     def test_negative(self):
-        from numpypy import array, negative
+        from _numpypy import array, negative
 
         a = array([-5.0, 0.0, 1.0])
         b = negative(a)
@@ -86,7 +86,7 @@
         assert negative(a + a)[3] == -6
 
     def test_abs(self):
-        from numpypy import array, absolute
+        from _numpypy import array, absolute
 
         a = array([-5.0, -0.0, 1.0])
         b = absolute(a)
@@ -94,7 +94,7 @@
             assert b[i] == abs(a[i])
 
     def test_add(self):
-        from numpypy import array, add
+        from _numpypy import array, add
 
         a = array([-5.0, -0.0, 1.0])
         b = array([ 3.0, -2.0,-3.0])
@@ -103,7 +103,7 @@
             assert c[i] == a[i] + b[i]
 
     def test_divide(self):
-        from numpypy import array, divide
+        from _numpypy import array, divide
 
         a = array([-5.0, -0.0, 1.0])
         b = array([ 3.0, -2.0,-3.0])
@@ -114,7 +114,7 @@
         assert (divide(array([-10]), array([2])) == array([-5])).all()
 
     def test_fabs(self):
-        from numpypy import array, fabs
+        from _numpypy import array, fabs
         from math import fabs as math_fabs
 
         a = array([-5.0, -0.0, 1.0])
@@ -123,7 +123,7 @@
             assert b[i] == math_fabs(a[i])
 
     def test_minimum(self):
-        from numpypy import array, minimum
+        from _numpypy import array, minimum
 
         a = array([-5.0, -0.0, 1.0])
         b = array([ 3.0, -2.0,-3.0])
@@ -132,7 +132,7 @@
             assert c[i] == min(a[i], b[i])
 
     def test_maximum(self):
-        from numpypy import array, maximum
+        from _numpypy import array, maximum
 
         a = array([-5.0, -0.0, 1.0])
         b = array([ 3.0, -2.0,-3.0])
@@ -145,7 +145,7 @@
         assert isinstance(x, (int, long))
 
     def test_multiply(self):
-        from numpypy import array, multiply
+        from _numpypy import array, multiply
 
         a = array([-5.0, -0.0, 1.0])
         b = array([ 3.0, -2.0,-3.0])
@@ -154,7 +154,7 @@
             assert c[i] == a[i] * b[i]
 
     def test_sign(self):
-        from numpypy import array, sign, dtype
+        from _numpypy import array, sign, dtype
 
         reference = [-1.0, 0.0, 0.0, 1.0]
         a = array([-5.0, -0.0, 0.0, 6.0])
@@ -173,7 +173,7 @@
         assert a[1] == 0
 
     def test_reciporocal(self):
-        from numpypy import array, reciprocal
+        from _numpypy import array, reciprocal
 
         reference = [-0.2, float("inf"), float("-inf"), 2.0]
         a = array([-5.0, 0.0, -0.0, 0.5])
@@ -182,7 +182,7 @@
             assert b[i] == reference[i]
 
     def test_subtract(self):
-        from numpypy import array, subtract
+        from _numpypy import array, subtract
 
         a = array([-5.0, -0.0, 1.0])
         b = array([ 3.0, -2.0,-3.0])
@@ -191,7 +191,7 @@
             assert c[i] == a[i] - b[i]
 
     def test_floor(self):
-        from numpypy import array, floor
+        from _numpypy import array, floor
 
         reference = [-2.0, -1.0, 0.0, 1.0, 1.0]
         a = array([-1.4, -1.0, 0.0, 1.0, 1.4])
@@ -200,7 +200,7 @@
             assert b[i] == reference[i]
 
     def test_copysign(self):
-        from numpypy import array, copysign
+        from _numpypy import array, copysign
 
         reference = [5.0, -0.0, 0.0, -6.0]
         a = array([-5.0, 0.0, 0.0, 6.0])
@@ -216,7 +216,7 @@
 
     def test_exp(self):
         import math
-        from numpypy import array, exp
+        from _numpypy import array, exp
 
         a = array([-5.0, -0.0, 0.0, 12345678.0, float("inf"),
                    -float('inf'), -12343424.0])
@@ -230,7 +230,7 @@
 
     def test_sin(self):
         import math
-        from numpypy import array, sin
+        from _numpypy import array, sin
 
         a = array([0, 1, 2, 3, math.pi, math.pi*1.5, math.pi*2])
         b = sin(a)
@@ -243,7 +243,7 @@
 
     def test_cos(self):
         import math
-        from numpypy import array, cos
+        from _numpypy import array, cos
 
         a = array([0, 1, 2, 3, math.pi, math.pi*1.5, math.pi*2])
         b = cos(a)
@@ -252,7 +252,7 @@
 
     def test_tan(self):
         import math
-        from numpypy import array, tan
+        from _numpypy import array, tan
 
         a = array([0, 1, 2, 3, math.pi, math.pi*1.5, math.pi*2])
         b = tan(a)
@@ -262,7 +262,7 @@
 
     def test_arcsin(self):
         import math
-        from numpypy import array, arcsin
+        from _numpypy import array, arcsin
 
         a = array([-1, -0.5, -0.33, 0, 0.33, 0.5, 1])
         b = arcsin(a)
@@ -276,7 +276,7 @@
 
     def test_arccos(self):
         import math
-        from numpypy import array, arccos
+        from _numpypy import array, arccos
 
         a = array([-1, -0.5, -0.33, 0, 0.33, 0.5, 1])
         b = arccos(a)
@@ -291,7 +291,7 @@
 
     def test_arctan(self):
         import math
-        from numpypy import array, arctan
+        from _numpypy import array, arctan
 
         a = array([-3, -2, -1, 0, 1, 2, 3, float('inf'), float('-inf')])
         b = arctan(a)
@@ -304,7 +304,7 @@
 
     def test_arcsinh(self):
         import math
-        from numpypy import arcsinh, inf
+        from _numpypy import arcsinh, inf
 
         for v in [inf, -inf, 1.0, math.e]:
             assert math.asinh(v) == arcsinh(v)
@@ -312,7 +312,7 @@
 
     def test_arctanh(self):
         import math
-        from numpypy import arctanh
+        from _numpypy import arctanh
 
         for v in [.99, .5, 0, -.5, -.99]:
             assert math.atanh(v) == arctanh(v)
@@ -323,7 +323,7 @@
 
     def test_sqrt(self):
         import math
-        from numpypy import sqrt
+        from _numpypy import sqrt
 
         nan, inf = float("nan"), float("inf")
         data = [1, 2, 3, inf]
@@ -333,13 +333,13 @@
         assert math.isnan(sqrt(nan))
 
     def test_reduce_errors(self):
-        from numpypy import sin, add
+        from _numpypy import sin, add
 
         raises(ValueError, sin.reduce, [1, 2, 3])
         raises(TypeError, add.reduce, 1)
 
     def test_reduce(self):
-        from numpypy import add, maximum
+        from _numpypy import add, maximum
 
         assert add.reduce([1, 2, 3]) == 6
         assert maximum.reduce([1]) == 1
@@ -348,7 +348,7 @@
 
     def test_comparisons(self):
         import operator
-        from numpypy import equal, not_equal, less, less_equal, greater, greater_equal
+        from _numpypy import equal, not_equal, less, less_equal, greater, greater_equal
 
         for ufunc, func in [
             (equal, operator.eq),
diff --git a/pypy/module/pypyjit/test_pypy_c/test_00_model.py b/pypy/module/pypyjit/test_pypy_c/test_00_model.py
--- a/pypy/module/pypyjit/test_pypy_c/test_00_model.py
+++ b/pypy/module/pypyjit/test_pypy_c/test_00_model.py
@@ -8,10 +8,12 @@
 from pypy.tool import logparser
 from pypy.jit.tool.jitoutput import parse_prof
 from pypy.module.pypyjit.test_pypy_c.model import (Log, find_ids_range,
-                                                   find_ids, TraceWithIds,
+                                                   find_ids,
                                                    OpMatcher, InvalidMatch)
 
 class BaseTestPyPyC(object):
+    log_string = 'jit-log-opt,jit-log-noopt,jit-log-virtualstate,jit-summary'
+    
     def setup_class(cls):
         if '__pypy__' not in sys.builtin_module_names:
             py.test.skip("must run this test with pypy")
@@ -52,8 +54,7 @@
             cmdline += ['--jit', ','.join(jitcmdline)]
         cmdline.append(str(self.filepath))
         #
-        print cmdline, logfile
-        env={'PYPYLOG': 'jit-log-opt,jit-log-noopt,jit-log-virtualstate,jit-summary:' + str(logfile)}
+        env={'PYPYLOG': self.log_string + ':' + str(logfile)}
         pipe = subprocess.Popen(cmdline,
                                 env=env,
                                 stdout=subprocess.PIPE,
diff --git a/pypy/module/pypyjit/test_pypy_c/test__ffi.py b/pypy/module/pypyjit/test_pypy_c/test__ffi.py
--- a/pypy/module/pypyjit/test_pypy_c/test__ffi.py
+++ b/pypy/module/pypyjit/test_pypy_c/test__ffi.py
@@ -98,7 +98,8 @@
             end = time.time()
             return end - start
         #
-        log = self.run(main, [get_libc_name(), 200], threshold=150)
+        log = self.run(main, [get_libc_name(), 200], threshold=150,
+                       import_site=True)
         assert 1 <= log.result <= 1.5 # at most 0.5 seconds of overhead
         loops = log.loops_by_id('sleep')
         assert len(loops) == 1 # make sure that we actually JITted the loop
@@ -121,7 +122,7 @@
             return fabs._ptr.getaddr(), x
 
         libm_name = get_libm_name(sys.platform)
-        log = self.run(main, [libm_name])
+        log = self.run(main, [libm_name], import_site=True)
         fabs_addr, res = log.result
         assert res == -4.0
         loop, = log.loops_by_filename(self.filepath)
diff --git a/pypy/module/pypyjit/test_pypy_c/test_string.py b/pypy/module/pypyjit/test_pypy_c/test_string.py
--- a/pypy/module/pypyjit/test_pypy_c/test_string.py
+++ b/pypy/module/pypyjit/test_pypy_c/test_string.py
@@ -15,7 +15,7 @@
                 i += letters[i % len(letters)] == uletters[i % len(letters)]
             return i
 
-        log = self.run(main, [300])
+        log = self.run(main, [300], import_site=True)
         assert log.result == 300
         loop, = log.loops_by_filename(self.filepath)
         assert loop.match("""
@@ -55,7 +55,7 @@
                 i += int(long(string.digits[i % len(string.digits)], 16))
             return i
 
-        log = self.run(main, [1100])
+        log = self.run(main, [1100], import_site=True)
         assert log.result == main(1100)
         loop, = log.loops_by_filename(self.filepath)
         assert loop.match("""
diff --git a/pypy/module/sys/__init__.py b/pypy/module/sys/__init__.py
--- a/pypy/module/sys/__init__.py
+++ b/pypy/module/sys/__init__.py
@@ -42,7 +42,7 @@
         'argv'                  : 'state.get(space).w_argv',
         'py3kwarning'           : 'space.w_False',
         'warnoptions'           : 'state.get(space).w_warnoptions', 
-        'builtin_module_names'  : 'state.w_None',
+        'builtin_module_names'  : 'space.w_None',
         'pypy_getudir'          : 'state.pypy_getudir',    # not translated
         'pypy_initial_path'     : 'state.pypy_initial_path',
 
diff --git a/pypy/module/sys/app.py b/pypy/module/sys/app.py
--- a/pypy/module/sys/app.py
+++ b/pypy/module/sys/app.py
@@ -66,11 +66,11 @@
     return None
 
 copyright_str = """
-Copyright 2003-2011 PyPy development team.
+Copyright 2003-2012 PyPy development team.
 All Rights Reserved.
 For further information, see <http://pypy.org>
 
-Portions Copyright (c) 2001-2008 Python Software Foundation.
+Portions Copyright (c) 2001-2012 Python Software Foundation.
 All Rights Reserved.
 
 Portions Copyright (c) 2000 BeOpen.com.
diff --git a/pypy/objspace/fake/checkmodule.py b/pypy/objspace/fake/checkmodule.py
--- a/pypy/objspace/fake/checkmodule.py
+++ b/pypy/objspace/fake/checkmodule.py
@@ -1,8 +1,10 @@
 from pypy.objspace.fake.objspace import FakeObjSpace, W_Root
+from pypy.config.pypyoption import get_pypy_config
 
 
 def checkmodule(modname):
-    space = FakeObjSpace()
+    config = get_pypy_config(translating=True)
+    space = FakeObjSpace(config)
     mod = __import__('pypy.module.%s' % modname, None, None, ['__doc__'])
     # force computation and record what we wrap
     module = mod.Module(space, W_Root())
diff --git a/pypy/objspace/fake/objspace.py b/pypy/objspace/fake/objspace.py
--- a/pypy/objspace/fake/objspace.py
+++ b/pypy/objspace/fake/objspace.py
@@ -93,9 +93,9 @@
 
 class FakeObjSpace(ObjSpace):
 
-    def __init__(self):
+    def __init__(self, config=None):
         self._seen_extras = []
-        ObjSpace.__init__(self)
+        ObjSpace.__init__(self, config=config)
 
     def float_w(self, w_obj):
         is_root(w_obj)
@@ -135,6 +135,9 @@
     def newfloat(self, x):
         return w_some_obj()
 
+    def newcomplex(self, x, y):
+        return w_some_obj()
+
     def marshal_w(self, w_obj):
         "NOT_RPYTHON"
         raise NotImplementedError
@@ -215,6 +218,10 @@
             expected_length = 3
         return [w_some_obj()] * expected_length
 
+    def unpackcomplex(self, w_complex):
+        is_root(w_complex)
+        return 1.1, 2.2
+
     def allocate_instance(self, cls, w_subtype):
         is_root(w_subtype)
         return instantiate(cls)
@@ -232,6 +239,11 @@
     def exec_(self, *args, **kwds):
         pass
 
+    def createexecutioncontext(self):
+        ec = ObjSpace.createexecutioncontext(self)
+        ec._py_repr = None
+        return ec
+
     # ----------
 
     def translates(self, func=None, argtypes=None, **kwds):
@@ -267,18 +279,21 @@
                  ObjSpace.ExceptionTable +
                  ['int', 'str', 'float', 'long', 'tuple', 'list',
                   'dict', 'unicode', 'complex', 'slice', 'bool',
-                  'type', 'basestring']):
+                  'type', 'basestring', 'object']):
         setattr(FakeObjSpace, 'w_' + name, w_some_obj())
     #
     for (name, _, arity, _) in ObjSpace.MethodTable:
         args = ['w_%d' % i for i in range(arity)]
+        params = args[:]
         d = {'is_root': is_root,
              'w_some_obj': w_some_obj}
+        if name in ('get',):
+            params[-1] += '=None'
         exec compile2("""\
             def meth(self, %s):
                 %s
                 return w_some_obj()
-        """ % (', '.join(args),
+        """ % (', '.join(params),
                '; '.join(['is_root(%s)' % arg for arg in args]))) in d
         meth = func_with_new_name(d['meth'], name)
         setattr(FakeObjSpace, name, meth)
@@ -301,9 +316,12 @@
     pass
 FakeObjSpace.default_compiler = FakeCompiler()
 
-class FakeModule(object):
+class FakeModule(Wrappable):
+    def __init__(self):
+        self.w_dict = w_some_obj()
     def get(self, name):
         name + "xx"   # check that it's a string
         return w_some_obj()
 FakeObjSpace.sys = FakeModule()
 FakeObjSpace.sys.filesystemencoding = 'foobar'
+FakeObjSpace.builtin = FakeModule()
diff --git a/pypy/objspace/fake/test/test_objspace.py b/pypy/objspace/fake/test/test_objspace.py
--- a/pypy/objspace/fake/test/test_objspace.py
+++ b/pypy/objspace/fake/test/test_objspace.py
@@ -40,7 +40,7 @@
     def test_constants(self):
         space = self.space
         space.translates(lambda: (space.w_None, space.w_True, space.w_False,
-                                  space.w_int, space.w_str,
+                                  space.w_int, space.w_str, space.w_object,
                                   space.w_TypeError))
 
     def test_wrap(self):
@@ -72,3 +72,9 @@
 
     def test_newlist(self):
         self.space.newlist([W_Root(), W_Root()])
+
+    def test_default_values(self):
+        # the __get__ method takes either 2 or 3 arguments
+        space = self.space
+        space.translates(lambda: (space.get(W_Root(), W_Root()),
+                                  space.get(W_Root(), W_Root(), W_Root())))
diff --git a/pypy/rlib/clibffi.py b/pypy/rlib/clibffi.py
--- a/pypy/rlib/clibffi.py
+++ b/pypy/rlib/clibffi.py
@@ -30,6 +30,9 @@
 _MAC_OS = platform.name == "darwin"
 _FREEBSD_7 = platform.name == "freebsd7"
 
+_LITTLE_ENDIAN = sys.byteorder == 'little'
+_BIG_ENDIAN = sys.byteorder == 'big'
+
 if _WIN32:
     from pypy.rlib import rwin32
 
@@ -360,12 +363,36 @@
 cast_type_to_ffitype._annspecialcase_ = 'specialize:memo'
 
 def push_arg_as_ffiptr(ffitp, arg, ll_buf):
-    # this is for primitive types. For structures and arrays
-    # would be something different (more dynamic)
+    # This is for primitive types.  Note that the exact type of 'arg' may be
+    # different from the expected 'c_size'.  To cope with that, we fall back
+    # to a byte-by-byte copy.
     TP = lltype.typeOf(arg)
     TP_P = lltype.Ptr(rffi.CArray(TP))
-    buf = rffi.cast(TP_P, ll_buf)
-    buf[0] = arg
+    TP_size = rffi.sizeof(TP)
+    c_size = intmask(ffitp.c_size)
+    # if both types have the same size, we can directly write the
+    # value to the buffer
+    if c_size == TP_size:
+        buf = rffi.cast(TP_P, ll_buf)
+        buf[0] = arg
+    else:
+        # needs byte-by-byte copying.  Make sure 'arg' is an integer type.
+        # Note that this won't work for rffi.FLOAT/rffi.DOUBLE.
+        assert TP is not rffi.FLOAT and TP is not rffi.DOUBLE
+        if TP_size <= rffi.sizeof(lltype.Signed):
+            arg = rffi.cast(lltype.Unsigned, arg)
+        else:
+            arg = rffi.cast(lltype.UnsignedLongLong, arg)
+        if _LITTLE_ENDIAN:
+            for i in range(c_size):
+                ll_buf[i] = chr(arg & 0xFF)
+                arg >>= 8
+        elif _BIG_ENDIAN:
+            for i in range(c_size-1, -1, -1):
+                ll_buf[i] = chr(arg & 0xFF)
+                arg >>= 8
+        else:
+            raise AssertionError
 push_arg_as_ffiptr._annspecialcase_ = 'specialize:argtype(1)'
 
 
diff --git a/pypy/rlib/jit.py b/pypy/rlib/jit.py
--- a/pypy/rlib/jit.py
+++ b/pypy/rlib/jit.py
@@ -386,6 +386,18 @@
 class JitHintError(Exception):
     """Inconsistency in the JIT hints."""
 
+PARAMETER_DOCS = {
+    'threshold': 'number of times a loop has to run for it to become hot',
+    'function_threshold': 'number of times a function must run for it to become traced from start',
+    'trace_eagerness': 'number of times a guard has to fail before we start compiling a bridge',
+    'trace_limit': 'number of recorded operations before we abort tracing with ABORT_TOO_LONG',
+    'inlining': 'inline python functions or not (1/0)',
+    'loop_longevity': 'a parameter controlling how long loops will be kept before being freed, an estimate',
+    'retrace_limit': 'how many times we can try retracing before giving up',
+    'max_retrace_guards': 'number of extra guards a retrace can cause',
+    'enable_opts': 'optimizations to enable or all, INTERNAL USE ONLY'
+    }
+
 PARAMETERS = {'threshold': 1039, # just above 1024, prime
               'function_threshold': 1619, # slightly more than one above, also prime
               'trace_eagerness': 200,
diff --git a/pypy/tool/jitlogparser/parser.py b/pypy/tool/jitlogparser/parser.py
--- a/pypy/tool/jitlogparser/parser.py
+++ b/pypy/tool/jitlogparser/parser.py
@@ -185,7 +185,10 @@
         return self.code.map[self.bytecode_no]
 
     def getlineno(self):
-        return self.getopcode().lineno
+        code = self.getopcode()
+        if code is None:
+            return None
+        return code.lineno
     lineno = property(getlineno)
 
     def getline_starts_here(self):
diff --git a/pypy/tool/jitlogparser/storage.py b/pypy/tool/jitlogparser/storage.py
--- a/pypy/tool/jitlogparser/storage.py
+++ b/pypy/tool/jitlogparser/storage.py
@@ -6,7 +6,6 @@
 import py
 import os
 from lib_pypy.disassembler import dis
-from pypy.tool.jitlogparser.parser import Function
 from pypy.tool.jitlogparser.module_finder import gather_all_code_objs
 
 class LoopStorage(object):
diff --git a/pypy/translator/c/src/profiling.c b/pypy/translator/c/src/profiling.c
--- a/pypy/translator/c/src/profiling.c
+++ b/pypy/translator/c/src/profiling.c
@@ -29,6 +29,35 @@
     profiling_setup = 0;
   }
 }
+
+#elif defined(_WIN32)
+#include <windows.h>
+
+DWORD_PTR base_affinity_mask;
+int profiling_setup = 0;
+
+void pypy_setup_profiling() { 
+    if (!profiling_setup) {
+        DWORD_PTR affinity_mask, system_affinity_mask;
+        GetProcessAffinityMask(GetCurrentProcess(),
+            &base_affinity_mask, &system_affinity_mask);
+        affinity_mask = 1;
+        /* Pick one cpu allowed by the system */
+        if (system_affinity_mask)
+            while ((affinity_mask & system_affinity_mask) == 0)
+                affinity_mask <<= 1;
+        SetProcessAffinityMask(GetCurrentProcess(), affinity_mask);
+        profiling_setup = 1;
+    }
+}
+
+void pypy_teardown_profiling() {
+    if (profiling_setup) {
+        SetProcessAffinityMask(GetCurrentProcess(), base_affinity_mask);
+        profiling_setup = 0;
+    }
+}
+
 #else
 void pypy_setup_profiling() { }
 void pypy_teardown_profiling() { }
diff --git a/pypy/translator/goal/app_main.py b/pypy/translator/goal/app_main.py
--- a/pypy/translator/goal/app_main.py
+++ b/pypy/translator/goal/app_main.py
@@ -139,8 +139,8 @@
     items = pypyjit.defaults.items()
     items.sort()
     for key, value in items:
-        print '  --jit %s=N %slow-level JIT parameter (default %s)' % (
-            key, ' '*(18-len(key)), value)
+        print '  --jit %s=N %s%s (default %s)' % (
+            key, ' '*(18-len(key)), pypyjit.PARAMETER_DOCS[key], value)
     print '  --jit off                  turn off the JIT'
 
 def print_version(*args):


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