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/* Install given floating-point environment.
Copyright (C) 2018-2020 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
<https://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fpu_control.h>
int
__fesetenv (const fenv_t *envp)
{
unsigned int fpcr;
unsigned int fpsr;
_FPU_GETCW (fpcr);
_FPU_GETFPSR (fpsr);
fpcr &= _FPU_RESERVED;
fpsr &= _FPU_FPSR_RESERVED;
if (envp == FE_DFL_ENV)
{
fpcr |= _FPU_DEFAULT;
fpsr |= _FPU_FPSR_DEFAULT;
}
else if (envp == FE_NOMASK_ENV)
{
fpcr |= _FPU_FPCR_IEEE;
fpsr |= _FPU_FPSR_IEEE;
}
else
{
fpcr |= envp->__fpcr & ~_FPU_RESERVED;
fpsr |= envp->__fpsr & ~_FPU_FPSR_RESERVED;
}
_FPU_SETFPSR (fpsr);
_FPU_SETCW (fpcr);
/* Success. */
return 0;
}
libm_hidden_def (__fesetenv)
weak_alias (__fesetenv, fesetenv)
libm_hidden_weak (fesetenv)
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