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-rw-r--r--core/math/math_funcs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/core/math/math_funcs.h b/core/math/math_funcs.h
index d5135fe414..bc0b3717ed 100644
--- a/core/math/math_funcs.h
+++ b/core/math/math_funcs.h
@@ -39,6 +39,7 @@
#include <math.h>
#define Math_PI 3.14159265358979323846
+#define Math_TAU 6.28318530717958647692
#define Math_SQRT12 0.7071067811865475244008443621048490
#define Math_LN2 0.693147180559945309417
#define Math_INF INFINITY