On Wed, Dec 9, 2015 at 6:11 PM, Paul B Mahol <one...@gmail.com> wrote: > On 12/9/15, Ganesh Ajjanagadde <gajjanaga...@gmail.com> wrote: >> pow is a ridiculous function for computing a simple Gaussian. >> >> Signed-off-by: Ganesh Ajjanagadde <gajjanaga...@gmail.com> >> --- >> libavfilter/avf_showfreqs.c | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/libavfilter/avf_showfreqs.c b/libavfilter/avf_showfreqs.c >> index a3665ef..3ed0155 100644 >> --- a/libavfilter/avf_showfreqs.c >> +++ b/libavfilter/avf_showfreqs.c >> @@ -227,8 +227,9 @@ static void generate_window_func(float *lut, int N, int >> win_func, float *overlap >> *overlap = 0.75; >> break; >> case WFUNC_GAUSS: >> +#define SQR(x) ((x)*(x)) >> for (n = 0; n < N; n++) >> - lut[n] = pow(M_E,-0.5*pow((n-(N-1)/2)/(0.4*(N-1)/2.f),2)); >> + lut[n] = exp(-0.5 * SQR((n-(N-1)/2)/(0.4*(N-1)/2.f))); >> *overlap = 0.75; >> break; >> default: >> -- >> 2.6.3 > > OK
pushed, thanks _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
