[FFmpeg-cvslog] avfilter/af_volume: use log10 instead of log()/M_LN10

[Ganesh Ajjanagadde]

ffmpeg | branch: master | Ganesh Ajjanagadde <gajjanagadde at gmail.com> | Thu Oct 29 00:11:44 2015 -0400| [4d0d85c94ad9fe943e12b8db5fe4ed9df170c12c] | committer: Ganesh Ajjanagadde

avfilter/af_volume: use log10 instead of log()/M_LN10

This is likely more precise and conveys the intent better.

Reviewed-by: Michael Niedermayer <michael at niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4d0d85c94ad9fe943e12b8db5fe4ed9df170c12c
---

 libavfilter/af_volume.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/af_volume.c b/libavfilter/af_volume.c
index 16e994c..3ba356a 100644
--- a/libavfilter/af_volume.c
+++ b/libavfilter/af_volume.c
@@ -279,7 +279,7 @@ static int set_volume(AVFilterContext *ctx)
         av_log(ctx, AV_LOG_VERBOSE, "volume_i:%d/255 ", vol->volume_i);
     }
     av_log(ctx, AV_LOG_VERBOSE, "volume:%f volume_dB:%f\n",
-           vol->volume, 20.0*log(vol->volume)/M_LN10);
+           vol->volume, 20.0*log10(vol->volume));
 
     volume_init(vol);
     return 0;