40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* Enable floating-point exceptions.
|
|
Copyright (C) 2022 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 <fenv_libc.h>
|
|
#include <fpu_control.h>
|
|
|
|
int
|
|
feenableexcept (int excepts)
|
|
{
|
|
unsigned int new_exc, old_exc;
|
|
|
|
/* Get the current control word. */
|
|
_FPU_GETCW (new_exc);
|
|
|
|
old_exc = (new_exc & ENABLE_MASK) << ENABLE_SHIFT;
|
|
|
|
excepts &= FE_ALL_EXCEPT;
|
|
|
|
new_exc |= excepts >> ENABLE_SHIFT;
|
|
_FPU_SETCW (new_exc);
|
|
|
|
return old_exc;
|
|
}
|