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/* Store current representation for exceptions.
Copyright (C) 1997-2016 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
__fegetexceptflag (fexcept_t *flagp, int excepts)
{
fexcept_t temp;
/* Get the current exceptions. */
__asm__ ("fnstsw %0" : "=m" (*&temp));
*flagp = temp & excepts & FE_ALL_EXCEPT;
/* If the CPU supports SSE, we clear the MXCSR as well. */
if ((GLRO(dl_hwcap) & HWCAP_I386_XMM) != 0)
{
unsigned int sse_exc;
/* Get the current MXCSR. */
__asm__ ("stmxcsr %0" : "=m" (*&sse_exc));
*flagp |= sse_exc & excepts & FE_ALL_EXCEPT;
}
/* Success. */
return 0;
}
#include <shlib-compat.h>
#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
strong_alias (__fegetexceptflag, __old_fegetexceptflag)
compat_symbol (libm, __old_fegetexceptflag, fegetexceptflag, GLIBC_2_1);
#endif
versioned_symbol (libm, __fegetexceptflag, fegetexceptflag, GLIBC_2_2);
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