2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 * Compatibility libm for table generation files
24 #ifndef AVUTIL_TABLEGEN_H
25 #define AVUTIL_TABLEGEN_H
29 // we lack some functions on all host platforms, and we don't care about
30 // performance and/or strict ISO C semantics as it's performed at build time
31 static inline double ff_cbrt(double x)
33 return x < 0 ? -pow(-x, 1.0 / 3.0) : pow(x, 1.0 / 3.0);
37 static inline double ff_rint(double x)
39 return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5);
43 static inline long long ff_llrint(double x)
47 #define llrint ff_llrint
49 static inline long ff_lrint(double x)
53 #define lrint ff_lrint
55 #endif /* AVUTIL_TABLEGEN_H */