The sum of an Int32 array and a Float32 array is a Float64 array, as shown by the following code:
a = Numeric.array([1,2,3,4],'i') a.typecode(), a.itemsize()
b = Numeric.array([1,2,3,4],'f') b.typecode(), b.itemsize()
c=a+b c.typecode(), c.itemsize()
a = Numeric.array([1,2,3,4],'i') a.typecode(), a.itemsize()
('i', 4)
b = Numeric.array([1,2,3,4],'f') b.typecode(), b.itemsize()
('f', 4)
c=a+b c.typecode(), c.itemsize()
('d', 8)
Why is the upcasting?
I am using Linux/Pentium/python2.1/numpy20 .
Thanks.
Benyang Tang