Do not set COMPILE_C if AltiVec is enabled without runtime CPU detection.

[ffmpeg] / libavutil / mathematics.h

diff --git a/libavutil/mathematics.h b/libavutil/mathematics.h
index fa407b61116c87cea02f71db5dbc410170794bdc..74385274b30a93432d9f6320cf21e05d35a38097 100644 (file)
--- a/libavutil/mathematics.h
+++ b/libavutil/mathematics.h
@@ -18,12 +18,29 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef FFMPEG_MATHEMATICS_H
-#define FFMPEG_MATHEMATICS_H
+#ifndef AVUTIL_MATHEMATICS_H
+#define AVUTIL_MATHEMATICS_H
 
 #include <stdint.h>
+#include <math.h>
 #include "rational.h"
 
+#ifndef M_E
+#define M_E            2.7182818284590452354   /* e */
+#endif
+#ifndef M_LN2
+#define M_LN2          0.69314718055994530942  /* log_e 2 */
+#endif
+#ifndef M_LN10
+#define M_LN10         2.30258509299404568402  /* log_e 10 */
+#endif
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#endif
+#ifndef M_SQRT1_2
+#define M_SQRT1_2      0.70710678118654752440  /* 1/sqrt(2) */
+#endif
+
 enum AVRounding {
     AV_ROUND_ZERO     = 0, ///< round toward zero
     AV_ROUND_INF      = 1, ///< round away from zero
@@ -36,17 +53,17 @@ enum AVRounding {
  * rescale a 64bit integer with rounding to nearest.
  * a simple a*b/c isn't possible as it can overflow
  */
-int64_t av_rescale(int64_t a, int64_t b, int64_t c);
+int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const;
 
 /**
  * rescale a 64bit integer with specified rounding.
  * a simple a*b/c isn't possible as it can overflow
  */
-int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
+int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding) av_const;
 
 /**
  * rescale a 64bit integer by 2 rational numbers.
  */
-int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq);
+int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const;
 
-#endif /* FFMPEG_MATHEMATICS_H */
+#endif /* AVUTIL_MATHEMATICS_H */