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/* Install given floating-point environment.
Copyright (C) 2004-2014 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 <fenv.h>
#include <fpu_control.h>
#include <arm-features.h>
int
__fesetenv (const fenv_t *envp)
{
if (ARM_HAVE_VFP)
{
unsigned int temp;
_FPU_GETCW (temp);
temp &= _FPU_RESERVED;
if (envp == FE_DFL_ENV)
temp |= _FPU_DEFAULT;
else if (envp == FE_NOMASK_ENV)
temp |= _FPU_IEEE;
else
temp |= envp->__cw & ~_FPU_RESERVED;
_FPU_SETCW (temp);
if (envp == FE_NOMASK_ENV)
{
/* VFPv3 and VFPv4 do not support trapping exceptions, so
test whether the relevant bits were set and fail if
not. */
_FPU_GETCW (temp);
if ((temp & _FPU_IEEE) != _FPU_IEEE)
return 1;
}
/* Success. */
return 0;
}
/* Unsupported, so fail. */
return 1;
}
#include <shlib-compat.h>
libm_hidden_ver (__fesetenv, fesetenv)
versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
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