[Numpy-discussion] code review request: masked dtype transfers

[Nathaniel Smith]

On Sat, Jul 9, 2011 at 11:29 AM, Mark Wiebe <mwwiebe at gmail.com> wrote:
> typedef npy_uint8 npy_mask;
> #define NPY_MASK NPY_UINT8
> #define NPY_MASK_ISEXPOSED(mask) (((mask)&0x01) != 0)
> #define NPY_MASK_GETPAYLOAD(mask) (((npy_mask)mask) >> 1)
> #define NPY_MASK_MAKEMASK(exposed, payload) ((npy_mask)(exposed&0x01) |
> (npy_mask)(payload << 1))

Even better, these should be inline functions instead of macros... (or
is there some horrible old compiler that we care about that that
wouldn't work for?)

-- Nathaniel