/*****************************************************************************/ /* * costab.h -- User soundmodem commonly used tables. * * Copyright (C) 1996-2000 * Thomas Sailer (sailer@ife.ee.ethz.ch) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef _COSTAB_H #define _COSTAB_H /* --------------------------------------------------------------------- */ #include "modem.h" /* --------------------------------------------------------------------- */ extern const int16_t afsk_costab[512]; #define COS(x) afsk_costab[((x)>>7)&0x1ff] #define SIN(x) COS((x)+0xc000) /* --------------------------------------------------------------------- */ #endif /* _COSTAB_H */