_cook_nd_args.py

# This file is licensed differently to the rest of pyFFTW. The license
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# A module containing the latest version of _cook_nd_args from
# numpy.fft.fftpack. It can be used to overwrite an earlier
# broken version in the tests.

from numpy.core import take

def _cook_nd_args(a, s=None, axes=None, invreal=0):
    if s is None:
        shapeless = 1
        if axes is None:
            s = list(a.shape)
        else:
            s = take(a.shape, axes)
    else:
        shapeless = 0
    s = list(s)
    if axes is None:
        axes = range(-len(s), 0)
    if len(s) != len(axes):
        raise ValueError("Shape and axes have different lengths.")
    if invreal and shapeless:
        # Here is the fix. The following line is replaced
        # (see numpy commit 88a02920daf0b408086106439c53bd488e73af29):
        #s[axes[-1]] = (s[axes[-1]] - 1) * 2
        s[-1] = (a.shape[axes[-1]] - 1) * 2
    return s, axes