*
* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef CBRT_TABLEGEN_H
-#define CBRT_TABLEGEN_H
+#ifndef AVCODEC_CBRT_TABLEGEN_H
+#define AVCODEC_CBRT_TABLEGEN_H
#include <stdint.h>
#include <math.h>
{
if (!cbrt_tab[(1<<13) - 1]) {
int i;
+ /* cbrtf() isn't available on all systems, so we use powf(). */
for (i = 0; i < 1<<13; i++) {
union {
float f;
uint32_t i;
} f;
- f.f = cbrtf(i) * i;
+ f.f = powf(i, 1.0 / 3.0) * i;
cbrt_tab[i] = f.i;
}
}
}
#endif /* CONFIG_HARDCODED_TABLES */
-#endif /* CBRT_TABLEGEN_H */
+#endif /* AVCODEC_CBRT_TABLEGEN_H */