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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
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
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])
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