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-rw-r--r--bits/floatn-common.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/bits/floatn-common.h b/bits/floatn-common.h
index 070cdd0247..1d8958a193 100644
--- a/bits/floatn-common.h
+++ b/bits/floatn-common.h
@@ -56,6 +56,13 @@
#define __HAVE_DISTINCT_FLOAT64X 0
#define __HAVE_DISTINCT_FLOAT128X __HAVE_FLOAT128X
+/* Defined to 1 if the corresponding _FloatN type is not binary compatible
+ with the corresponding ISO C type in the current compilation unit as
+ opposed to __HAVE_DISTINCT_FLOATN, which indicates the default types built
+ in glibc. */
+#define __HAVE_FLOAT128_UNLIKE_LDBL (__HAVE_DISTINCT_FLOAT128 \
+ && __LDBL_MANT_DIG__ != 113)
+
/* Defined to 1 if any _FloatN or _FloatNx types that are not
ABI-distinct are however distinct types at the C language level (so
for the purposes of __builtin_types_compatible_p and _Generic). */