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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 a7c69b084..ecd01877c 100644
--- a/include/math.h
+++ b/include/math.h
@@ -135,7 +135,7 @@ __BEGIN_DECLS
# if (defined __STDC__ || defined __GNUC__) \
- && (defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT)
+ && (!defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT)
# ifdef __LDBL_COMPAT
# ifdef __USE_ISOC99