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-rw-r--r--math/math.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/math/math.h b/math/math.h
index 1e300c4..e1d266f 100644
--- a/math/math.h
+++ b/math/math.h
@@ -1296,7 +1296,7 @@ iszero (__T __val)
#endif
#ifdef __USE_ISOC99
-# if __GNUC_PREREQ (3, 1)
+# if __GNUC_PREREQ (3, 1) && !defined __clang__
/* ISO C99 defines some macros to compare number while taking care for
unordered numbers. Many FPUs provide special instructions to support
these operations. Generic support in GCC for these as builtins went