ffmpeg | branch: release/3.4 | Michael Niedermayer <mich...@niedermayer.cc> | Tue Jun 20 00:59:40 2023 +0200| [f7f742a519736d6076fc1f3437feb5cdbdf0c222] | committer: Michael Niedermayer
avutil/softfloat: fix av_sincos_sf() Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit d84677abd8ffb8ca8ad94eced6d9e03928f35d79) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f7f742a519736d6076fc1f3437feb5cdbdf0c222 --- libavutil/softfloat.h | 2 +- libavutil/tests/softfloat.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/libavutil/softfloat.h b/libavutil/softfloat.h index a651406f74..1520027ddc 100644 --- a/libavutil/softfloat.h +++ b/libavutil/softfloat.h @@ -281,7 +281,7 @@ static av_unused void av_sincos_sf(int a, int *s, int *c) (int64_t)av_sintbl_4_sf[(idx & 0x1f) + 1] * (a & 0x7ff) + 0x400) >> 11); - *c = (int)(((int64_t)cv * ct + (int64_t)sv * st + 0x20000000) >> 30); + *c = (int)(((int64_t)cv * ct - (int64_t)sv * st + 0x20000000) >> 30); *s = (int)(((int64_t)cv * st + (int64_t)sv * ct + 0x20000000) >> 30); } diff --git a/libavutil/tests/softfloat.c b/libavutil/tests/softfloat.c index c06de44933..a2e628fe81 100644 --- a/libavutil/tests/softfloat.c +++ b/libavutil/tests/softfloat.c @@ -148,7 +148,7 @@ int main(void){ av_sincos_sf(i*(1ULL<<32)/36/4, &s, &c); errs = (double)s/ (1<<30) - sin(i*M_PI/36); errc = (double)c/ (1<<30) - cos(i*M_PI/36); - if (fabs(errs) > 0.00000002 || fabs(errc) >0.001) { + if (fabs(errs) > 0.000000004 || fabs(errc) >0.000000004) { printf("sincos FAIL %d %f %f %f %f\n", i, (float)s/ (1<<30), (float)c/ (1<<30), sin(i*M_PI/36), cos(i*M_PI/36)); } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
