1 files changed, 0 insertions, 2 deletions
diff --git a/math.c b/math.c
index d0a179159c..5bd6c29865 100644
--- a/math.c
+++ b/math.c
@@ -19,8 +19,6 @@
     extern int signbit(double);
 #endif
 
-#define numberof(array) (int)(sizeof(array) / sizeof((array)[0]))
-
 VALUE rb_mMath;
 VALUE rb_eMathDomainError;