00001 /* 00002 * Copyright Droids Corporation, Microb Technology, Eirbot (2005) 00003 * 00004 * This program is free software; you can redistribute it and/or modify 00005 * it under the terms of the GNU General Public License as published by 00006 * the Free Software Foundation; either version 2 of the License, or 00007 * (at your option) any later version. 00008 * 00009 * This program is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 * GNU General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU General Public License 00015 * along with this program; if not, write to the Free Software 00016 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00017 * 00018 * Revision : $Id: f16_mul.c,v 1.6 2008-05-14 13:27:12 zer0 Exp $ 00019 * 00020 */ 00021 00022 #include <stdio.h> 00023 #include <f16.h> 00024 #include <s16_to_f16.h> 00025 00026 00027 f16 f16_mul(f16 a, f16 b) 00028 { 00029 return s16_to_f16( ( ((int16_t)(a.f16_integer) * (int16_t)(b.f16_integer)) << 8 ) + 00030 (int16_t)(a.f16_integer) * (int16_t)(b.f16_decimal) + 00031 (int16_t)(a.f16_decimal) * (int16_t)(b.f16_integer) + 00032 ( ((int16_t)(a.f16_decimal) * (int16_t)(b.f16_decimal)) >> 8 ) ); 00033 }
1.5.6