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/* Set given exception flags. PowerPC version.
Copyright (C) 2016-2024 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_libc.h>
int
fesetexcept (int excepts)
{
fenv_union_t u, n;
u.fenv = fegetenv_register ();
n.l = (u.l
| (excepts & FPSCR_STICKY_BITS)
/* Turn FE_INVALID into FE_INVALID_SOFTWARE. */
| (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT))
& FE_INVALID_SOFTWARE));
if (n.l != u.l)
{
if (n.l & fenv_exceptions_to_reg (excepts))
/* Setting the exception flags may trigger a trap. ISO C 23 § 7.6.4.4
does not allow it. */
return -1;
fesetenv_register (n.fenv);
/* Deal with FE_INVALID_SOFTWARE not being implemented on some chips. */
if (excepts & FE_INVALID)
feraiseexcept (FE_INVALID);
}
return 0;
}
|
