| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2006 Jens Arnold |
| * |
| * Fixed point library for plugins |
| * |
| * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| long fsincos(unsigned long phase, long *cos); |
| long fsqrt(long a, unsigned int fracbits); |
| long cos_int(int val); |
| long sin_int(int val); |
| long flog(int x); |
| |
| /* fast unsigned multiplication (16x16bit->32bit or 32x32bit->32bit, |
| * whichever is faster for the architecture) */ |
| #ifdef CPU_ARM |
| #define FMULU(a, b) ((uint32_t) (((uint32_t) (a)) * ((uint32_t) (b)))) |
| #else /* SH1, coldfire */ |
| #define FMULU(a, b) ((uint32_t) (((uint16_t) (a)) * ((uint16_t) (b)))) |
| #endif |