avutil/softfloat: fix av_sincos_sf()

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2023-06-20 00:59:40 +02:00
parent fe167bae96
commit d84677abd8
2 changed files with 2 additions and 2 deletions
--- 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);
 }