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-rw-r--r--bits/mathdef.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/bits/mathdef.h b/bits/mathdef.h
index ca1f464bce..f27ecac042 100644
--- a/bits/mathdef.h
+++ b/bits/mathdef.h
@@ -35,15 +35,15 @@ typedef double double_t; /* `double' expressions are evaluated as
/* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
builtins are supported. */
-#if __FP_FAST_FMA
+#ifdef __FP_FAST_FMA
# define FP_FAST_FMA 1
#endif
-#if __FP_FAST_FMAF
+#ifdef __FP_FAST_FMAF
# define FP_FAST_FMAF 1
#endif
-#if __FP_FAST_FMAL
+#ifdef __FP_FAST_FMAL
# define FP_FAST_FMAL 1
#endif