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-rw-r--r--libavfilter/vsrc_mandelbrot.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavfilter/vsrc_mandelbrot.c b/libavfilter/vsrc_mandelbrot.c
index 7a1a864fef..0e532917cf 100644
--- a/libavfilter/vsrc_mandelbrot.c
+++ b/libavfilter/vsrc_mandelbrot.c
@@ -30,6 +30,8 @@
#include "libavutil/imgutils.h"
#include "libavutil/parseutils.h"
+#define SQR(a) ((a)*(a))
+
enum Outer{
ITERATION_COUNT,
NORMALIZED_ITERATION_COUNT,