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https://github.com/VK3FNG/soundmodem.git
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54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
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/*****************************************************************************/
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/*
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* raisedcosine.h -- Raised Cosine Functions.
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*
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* Copyright (C) 2002
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* Thomas Sailer (t.sailer@alumni.ethz.ch)
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*
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* This program 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 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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*/
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/*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifndef _RAISEDCOSINE_H
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#define _RAISEDCOSINE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* --------------------------------------------------------------------- */
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extern double sinc(double x);
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extern double hamming(double x);
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extern double raised_cosine_time(double time, double alpha);
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extern double raised_cosine_freq(double freq, double alpha);
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extern double root_raised_cosine_time(double time, double alpha);
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extern double root_raised_cosine_freq(double freq, double alpha);
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/* --------------------------------------------------------------------- */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RAISEDCOSINE_H */
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