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utils.c
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utils.c
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/*****************************************************************************
* utils.c: various utility functions.
*****************************************************************************
* Copyright (C) 2009
*
* Authors: Nathan Caldwell <saintdev@gmail.com>
* x264 developers
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*****************************************************************************/
#include "utils.h"
/* Taken directly from x264 */
void reduce_fraction(int *n, int *d)
{
int a = *n;
int b = *d;
int c;
if (!a || !b)
return;
c = a % b;
while (c) {
a = b;
b = c;
c = a % b;
}
*n /= b;
*d /= b;
}
int intcmp(const void *p1, const void *p2)
{
int i1 = *(int *)p1;
int i2 = *(int *)p2;
if( i1 > i2 )
return 1;
else if( i1 < i2 )
return -1;
return 0;
}