1 files changed, 69 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/fpu/fclrexcpt.c b/REORG.TODO/sysdeps/i386/fpu/fclrexcpt.c
new file mode 100644
index 0000000000..5d8596964b
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/fpu/fclrexcpt.c
@@ -0,0 +1,69 @@
+/* Clear given exceptions in current floating-point environment.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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 <fenv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+int
+__feclearexcept (int excepts)
+{
+  fenv_t temp;
+
+  /* Mask out unsupported bits/exceptions.  */
+  excepts &= FE_ALL_EXCEPT;
+
+  /* Bah, we have to clear selected exceptions.  Since there is no
+     `fldsw' instruction we have to do it the hard way.  */
+  __asm__ ("fnstenv %0" : "=m" (*&temp));
+
+  /* Clear the relevant bits.  */
+  temp.__status_word &= excepts ^ FE_ALL_EXCEPT;
+
+  /* Put the new data in effect.  */
+  __asm__ ("fldenv %0" : : "m" (*&temp));
+
+  /* If the CPU supports SSE, we clear the MXCSR as well.  */
+  if (HAS_CPU_FEATURE (SSE))
+    {
+      unsigned int xnew_exc;
+
+      /* Get the current MXCSR.  */
+      __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
+
+      /* Clear the relevant bits.  */
+      xnew_exc &= ~excepts;
+
+      /* Put the new data in effect.  */
+      __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+    }
+
+  /* Success.  */
+  return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__feclearexcept, __old_feclearexcept)
+compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
+#endif
+
+libm_hidden_ver (__feclearexcept, feclearexcept)
+versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);