1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/x86/fpu/include/bits/fenv.h b/sysdeps/x86/fpu/include/bits/fenv.h
new file mode 100644
index 0000000000..f5d062aae3
--- /dev/null
+++ b/sysdeps/x86/fpu/include/bits/fenv.h
@@ -0,0 +1,42 @@
+/* Wrapper for x86 bits/fenv.h for use when building glibc.
+   Copyright (C) 1997-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include_next <bits/fenv.h>
+
+/* Ensure __feraiseexcept calls in glibc are optimized the same as
+   feraiseexcept calls.  */
+
+#ifdef __USE_EXTERN_INLINES
+__BEGIN_DECLS
+
+extern int __REDIRECT_NTH (____feraiseexcept_renamed, (int), __feraiseexcept);
+__extern_inline int
+__NTH (__feraiseexcept (int __excepts))
+{
+  if (__builtin_constant_p (__excepts)
+      && (__excepts & ~(FE_INVALID | FE_DIVBYZERO)) == 0)
+    {
+      __feraiseexcept_invalid_divbyzero (__excepts);
+      return 0;
+    }
+
+  return ____feraiseexcept_renamed (__excepts);
+}
+
+__END_DECLS
+#endif