mirror of https://github.com/VDR4Arch/vdr.git
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/*
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* srfft.h
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*
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* Copyright (C) Yuqing Deng <Yuqing_Deng@brown.edu> - April 2000
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*
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* 64 and 128 point split radix fft for ac3dec
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*
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* The algorithm is desribed in the book:
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* "Computational Frameworks of the Fast Fourier Transform".
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*
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* The ideas and the the organization of code borrowed from djbfft written by
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* D. J. Bernstein <djb@cr.py.to>. djbff can be found at
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* http://cr.yp.to/djbfft.html.
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*
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* srfft.h is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* srfft.h is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef SRFFT_H__
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#define SRFFT_H__
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#include "cmplx.h"
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void fft_64p_c (complex_t *x);
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void fft_128p_c (complex_t *x);
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#endif /* SRFFT_H__ */
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