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License: Other
Fast Hadamard Transform
License: Other
Nicolas,
tar tf fht-1.0.linux-x86_64.tar.gz
=> usr/lib/python2.6/site-packages/fht/ ...
(should be just fht/...)
Where's the C or did you not intend to release it ?
Ans tests/ is empty.
Thanks, cheers
-- denis
Shouldn'i it return the answer as in wikipedia example http://en.wikipedia.org/wiki/Fast_Hadamard_transform ?
But It works only this way:
fht.fht(np.asarray([1,0,1,0,0,1,1,0]))
array([1, 0, 0, 0, 0, 0, 0, 0])
If you do not need to cast the array, it is faster to use asarray
rather than astype
since asarray
will be much less expensive if not cast is needed.
In [16]: a = np.arange(1e8, dtype='float32')
In [17]: %timeit a.astype('float32')
10 loops, best of 3: 200 ms per loop
In [18]: %timeit np.asarray(a, dtype='float32')
1000000 loops, best of 3: 965 ns per loop
In [19]: %timeit a.astype('float64')
1 loops, best of 3: 270 ms per loop
In [20]: %timeit np.asarray(a, dtype='float64')
1 loops, best of 3: 269 ms per loop
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