On Tue, Jan 5, 2016 at 2:40 AM, Paul B Mahol <one...@gmail.com> wrote: > On 1/5/16, Ganesh Ajjanagadde <gajjanaga...@gmail.com> wrote: >> sqrt is faster, and is sometimes more accurate depending on the libm. >> >> Signed-off-by: Ganesh Ajjanagadde <gajjanaga...@gmail.com> >> --- >> libavfilter/af_compensationdelay.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/libavfilter/af_compensationdelay.c >> b/libavfilter/af_compensationdelay.c >> index 33ee7e4..d5a3484 100644 >> --- a/libavfilter/af_compensationdelay.c >> +++ b/libavfilter/af_compensationdelay.c >> @@ -57,7 +57,7 @@ AVFILTER_DEFINE_CLASS(compensationdelay); >> // The maximum distance for options >> #define COMP_DELAY_MAX_DISTANCE (100.0 * 100.0 + 100.0 * 1.0 + >> 1.0) >> // The actual speed of sound in normal conditions >> -#define COMP_DELAY_SOUND_SPEED_KM_H(temp) 1.85325 * (643.95 * pow(((temp + >> 273.15) / 273.15), 0.5)) >> +#define COMP_DELAY_SOUND_SPEED_KM_H(temp) 1.85325 * (643.95 * sqrt(((temp >> + 273.15) / 273.15))) >> #define COMP_DELAY_SOUND_SPEED_CM_S(temp) >> (COMP_DELAY_SOUND_SPEED_KM_H(temp) * (1000.0 * 100.0) /* cm/km */ / (60.0 * >> 60.0) /* s/h */) >> #define COMP_DELAY_SOUND_FRONT_DELAY(temp) (1.0 / >> COMP_DELAY_SOUND_SPEED_CM_S(temp)) >> // The maximum delay may be reached by this filter >> -- >> 2.6.4 >> >> _______________________________________________ >> ffmpeg-devel mailing list >> ffmpeg-devel@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel >> > > ok
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