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-rw-r--r--libavfilter/vf_edgedetect.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_edgedetect.c b/libavfilter/vf_edgedetect.c
index 25424dbcce..a5614ea63b 100644
--- a/libavfilter/vf_edgedetect.c
+++ b/libavfilter/vf_edgedetect.c
@@ -216,7 +216,7 @@ static int get_rounded_direction(int gx, int gy)
if (gx < 0)
gx = -gx, gy = -gy;
- gy <<= 16;
+ gy *= (1 << 16);
tanpi8gx = 27146 * gx;
tan3pi8gx = 158218 * gx;
if (gy > -tan3pi8gx && gy < -tanpi8gx) return DIRECTION_45UP;