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-rw-r--r--include/math.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/math.h b/include/math.h
index 4af75ed7..4c46a055 100644
--- a/include/math.h
+++ b/include/math.h
@@ -53,7 +53,7 @@ int __fpclassifyl(long double);
 #define isunordered(x,y) (isnan((x)) ? ((y),1) : isnan((y)))
 
 static
-#if __STDC_VERSION >= 199901L
+#if __STDC_VERSION__ >= 199901L
 inline
 #endif
 int __isrel(long double __x, long double __y, int __rel)