mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-27 13:30:45 +00:00
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Compatibility libm for table generation files
|
|
*/
|
|
|
|
#ifndef AVUTIL_TABLEGEN_H
|
|
#define AVUTIL_TABLEGEN_H
|
|
|
|
#include <math.h>
|
|
|
|
// we lack some functions on all host platforms, and we don't care about
|
|
// performance and/or strict ISO C semantics as it's performed at build time
|
|
static inline double ff_cbrt(double x)
|
|
{
|
|
return x < 0 ? -pow(-x, 1.0 / 3.0) : pow(x, 1.0 / 3.0);
|
|
}
|
|
#define cbrt ff_cbrt
|
|
|
|
static inline double ff_rint(double x)
|
|
{
|
|
return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5);
|
|
}
|
|
#define rint ff_rint
|
|
|
|
static inline long long ff_llrint(double x)
|
|
{
|
|
return rint(x);
|
|
}
|
|
#define llrint ff_llrint
|
|
|
|
static inline long ff_lrint(double x)
|
|
{
|
|
return rint(x);
|
|
}
|
|
#define lrint ff_lrint
|
|
|
|
#endif /* AVUTIL_TABLEGEN_H */
|