[FFmpeg-devel] [PATCH 09/11] avfilter/vf_psnr: use log10 instead of log()/log(10)

[Ganesh Ajjanagadde]

This is likely more precise and conveys the intent better.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>
---
 libavfilter/vf_psnr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/vf_psnr.c b/libavfilter/vf_psnr.c
index 36bbab2..bce5c51 100644
--- a/libavfilter/vf_psnr.c
+++ b/libavfilter/vf_psnr.c
@@ -72,7 +72,7 @@ static inline unsigned pow2(unsigned base)
 
 static inline double get_psnr(double mse, uint64_t nb_frames, int max)
 {
-    return 10.0 * log(pow2(max) / (mse / nb_frames)) / log(10.0);
+    return 10.0 * log10(pow2(max) / (mse / nb_frames));
 }
 
 static uint64_t sse_line_8bit(const uint8_t *main_line,  const uint8_t *ref_line, int outw)
-- 
2.6.2