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-rw-r--r--sysdeps/nios2/math_private.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/nios2/math_private.h b/sysdeps/nios2/math_private.h
index a32579ff47..373da2a621 100644
--- a/sysdeps/nios2/math_private.h
+++ b/sysdeps/nios2/math_private.h
@@ -25,6 +25,10 @@
 #define libc_feholdexcept_setround(env, exc)   ({ (void) (env); 0; })
 #define libc_feupdateenv_test(env, exc)        ({ (void) (env); 0; })
 
+/* Enable __finitel, __isinfl, and __isnanl for binary compatibility
+   when built without long double support. */
+#define LDBL_CLASSIFY_COMPAT 1
+
 #include_next <math_private.h>
 
 #define feraiseexcept(excepts)                 ({ 0; })