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# This module should be used for functions both in numpy and scipy if
# you want to use the numpy version if available but the scipy version
# otherwise.
# Usage --- from numpy.dual import fft, inv
__all__ = ['fft','ifft','fftn','ifftn','fft2','ifft2',
'norm','inv','svd','solve','det','eig','eigvals',
'eigh','eigvalsh','lstsq', 'pinv','cholesky','i0']
import numpy.linalg as linpkg
import numpy.fft as fftpkg
from numpy.lib import i0
import sys
fft = fftpkg.fft
ifft = fftpkg.ifft
fftn = fftpkg.fftn
ifftn = fftpkg.ifftn
fft2 = fftpkg.fft2
ifft2 = fftpkg.ifft2
norm = linpkg.norm
inv = linpkg.inv
svd = linpkg.svd
solve = linpkg.solve
det = linpkg.det
eig = linpkg.eig
eigvals = linpkg.eigvals
eigh = linpkg.eigh
eigvalsh = linpkg.eigvalsh
lstsq = linpkg.lstsq
pinv = linpkg.pinv
cholesky = linpkg.cholesky
_restore_dict = {}
def register_func(name, func):
if name not in __all__:
raise ValueError, "%s not a dual function." % name
f = sys._getframe(0).f_globals
_restore_dict[name] = f[name]
f[name] = func
def restore_func(name):
if name not in __all__:
raise ValueError, "%s not a dual function." % name
try:
val = _restore_dict[name]
except KeyError:
return
else:
sys._getframe(0).f_globals[name] = val
def restore_all():
for name in _restore_dict.keys():
restore_func(name)
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