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-rw-r--r--libc/sysdeps/linux/x86_64/bits/mathdef.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/x86_64/bits/mathdef.h b/libc/sysdeps/linux/x86_64/bits/mathdef.h
index 7b1618959..b0567e4d4 100644
--- a/libc/sysdeps/linux/x86_64/bits/mathdef.h
+++ b/libc/sysdeps/linux/x86_64/bits/mathdef.h
@@ -46,3 +46,7 @@ typedef long double double_t; /* `double' expressions are evaluated as
# define FP_ILOGBNAN (-2147483647 - 1)
#endif /* ISO C99 */
+
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
+# define __NO_LONG_DOUBLE_MATH 1
+#endif