13 lines
540 B
C
13 lines
540 B
C
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/******************************************************************
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* CopyPolicy: GNU Public License 2 applies
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* Copyright (C) 1998 Monty xiphmont@mit.edu
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*
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* FFT implementation from OggSquish, minus cosine transforms.
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* Only convenience functions exposed
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*
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******************************************************************/
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extern void fft_forward(int n, float *buf, float *trigcache, int *sp);
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extern void fft_backward(int n, float *buf, float *trigcache, int *sp);
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extern void fft_i(int n, float **trigcache, int **splitcache);
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