1 files changed, 6 insertions, 0 deletions
diff --git a/math/fenv.h b/math/fenv.h
index 35428370b4..845b5e637f 100644
--- a/math/fenv.h
+++ b/math/fenv.h
@@ -109,6 +109,12 @@ extern int fesetenv (__const fenv_t *__envp) __THROW;
    according to saved exceptions.  */
 extern int feupdateenv (__const fenv_t *__envp) __THROW;
 
+
+/* Include optimization.  */
+#ifdef __OPTIMIZE__
+# include <bits/fenvinline.h>
+#endif
+
 __END_DECLS
 
 #endif /* fenv.h */