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-rw-r--r--sysdeps/arm/math_private.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sysdeps/arm/math_private.h b/sysdeps/arm/math_private.h
index 541a7f8d93..d39e9ee24a 100644
--- a/sysdeps/arm/math_private.h
+++ b/sysdeps/arm/math_private.h
@@ -1,4 +1,9 @@
-#ifndef _MATH_PRIVATE_H
+#ifndef ARM_MATH_PRIVATE_H
+#define ARM_MATH_PRIVATE_H 1
+
+/* Enable __finitel, __isinfl, and __isnanl for binary compatibility
+ when built without long double support. */
+#define LDBL_CLASSIFY_COMPAT 1
#include "fenv_private.h"
#include_next <math_private.h>