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41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/*****************************************************************************/
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/*
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* costab.h -- User soundmodem commonly used tables.
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*
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* Copyright (C) 1996-2000
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* Thomas Sailer (sailer@ife.ee.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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#ifndef _COSTAB_H
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#define _COSTAB_H
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/* --------------------------------------------------------------------- */
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#include "modem.h"
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/* --------------------------------------------------------------------- */
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extern const int16_t afsk_costab[512];
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#define COS(x) afsk_costab[((x)>>7)&0x1ff]
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#define SIN(x) COS((x)+0xc000)
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/* --------------------------------------------------------------------- */
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#endif /* _COSTAB_H */
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