Current File : //glibc-2.29/sysdeps/x86_64/fpu/fegetenv.c
/* Store current floating-point environment.
Copyright (C) 2001-2019 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>
int
__fegetenv (fenv_t *envp)
{
__asm__ ("fnstenv %0\n"
/* fnstenv changes the exception mask, so load back the
stored environment. */
"fldenv %0\n"
"stmxcsr %1" : "=m" (*envp), "=m" (envp->__mxcsr));
/* Success. */
return 0;
}
libm_hidden_def (__fegetenv)
weak_alias (__fegetenv, fegetenv)
libm_hidden_weak (fegetenv)
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