| /* |
| * Copyright (c) 2001-2002, David Janssens |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "fix.h" |
| #include <math.h> //Add Antonin : multbug1 |
| |
| #ifdef WIN32 |
| #define int64 __int64 |
| #else |
| #define int64 long long |
| #endif |
| |
| /* |
| * Multiply two fixed-precision rational numbers. |
| */ |
| |
| //int fix_mul(int a, int b) |
| //{ |
| // return (int) ((int64) a * (int64) b >> 13); |
| //} |
| |
| //Mod Antonin : multbug1 |
| int fix_mul(int a, int b) |
| { |
| double tmp= (double) ((int64) a * (int64) b); |
| int64 v = (int64) ((fabs(tmp/8192.0)>=floor(fabs(tmp/8192.0))+0.5)?fabs(tmp/8192.0)+1.0:fabs(tmp/8192.0)); |
| v = (tmp<0)?-v:v; |
| return (int) v; |
| } |
| //doM |
| |