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kiss_fftr.c gives correct answers for forward

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Mark Borgerding
2003-12-07 04:04:27 +00:00
parent c2eaab8606
commit 09dbf36e97
5 changed files with 109 additions and 7 deletions
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3
fft.py
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@ -64,12 +64,15 @@ def real_fft( f,inv ):
ims = f[1::2]
fp = [ complex(r,i) for r,i in zip(res,ims) ]
print 'fft input ', fp
Fp = fft( fp ,0 )
print 'fft output ', Fp
F = []
for k in range(N):
F1k = Fp[k] + Fp[-k].conjugate()
F2k = -j*(Fp[k] - Fp[-k].conjugate())
print 'F2k[%d]=%s' % (k,F2k)
F.append( ( F1k + e ** ( -j*pi*k/N ) * F2k ) * .5 )