|
Packit |
6c4009 |
/* Install given floating-point environment and raise exceptions.
|
|
Packit |
6c4009 |
Copyright (C) 1997-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
This file is part of the GNU C Library.
|
|
Packit |
6c4009 |
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is free software; you can redistribute it and/or
|
|
Packit |
6c4009 |
modify it under the terms of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License as published by the Free Software Foundation; either
|
|
Packit |
6c4009 |
version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
6c4009 |
Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License along with the GNU C Library; if not, see
|
|
Packit |
6c4009 |
<http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <fenv_libc.h>
|
|
Packit |
6c4009 |
#include <fpu_control.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
int
|
|
Packit |
6c4009 |
__feupdateenv (const fenv_t *envp)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
fenv_union_t old, new;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Save the currently set exceptions. */
|
|
Packit |
6c4009 |
new.fenv = *envp;
|
|
Packit |
6c4009 |
old.fenv = fegetenv_register ();
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Restore rounding mode and exception enable from *envp and merge
|
|
Packit |
6c4009 |
exceptions. Leave fraction rounded/inexact and FP result/CC bits
|
|
Packit |
6c4009 |
unchanged. */
|
|
Packit |
6c4009 |
new.l = (old.l & 0xffffffff1fffff00LL) | (new.l & 0x1ff80fff);
|
|
Packit |
6c4009 |
|
|
Packit Bot |
732fcb |
__TEST_AND_EXIT_NON_STOP (old.l, new.l);
|
|
Packit Bot |
732fcb |
__TEST_AND_ENTER_NON_STOP (old.l, new.l);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Atomically enable and raise (if appropriate) exceptions set in `new'. */
|
|
Packit |
6c4009 |
fesetenv_register (new.fenv);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Success. */
|
|
Packit |
6c4009 |
return 0;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <shlib-compat.h>
|
|
Packit |
6c4009 |
#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
|
|
Packit |
6c4009 |
strong_alias (__feupdateenv, __old_feupdateenv)
|
|
Packit |
6c4009 |
compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
libm_hidden_def (__feupdateenv)
|
|
Packit |
6c4009 |
libm_hidden_ver (__feupdateenv, feupdateenv)
|
|
Packit |
6c4009 |
versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
|