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-rw-r--r--include/fenv.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/fenv.h b/include/fenv.h
index 7070199ece..de4d46f8b7 100644
--- a/include/fenv.h
+++ b/include/fenv.h
@@ -13,7 +13,7 @@ extern int __fesetexceptflag (const fexcept_t *__flagp, int __excepts);
 extern int __fegetenv (fenv_t *__envp);
 extern int __fesetenv (const fenv_t *__envp);
 extern int __feupdateenv (const fenv_t *__envp);
-extern __typeof (fegetround) __fegetround;
+extern __typeof (fegetround) __fegetround __attribute_pure__;
 extern __typeof (feholdexcept) __feholdexcept;
 extern __typeof (fesetround) __fesetround;