mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* Test exception in current environment.
|
|
Copyright (C) 2000-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
|
|
|
|
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_libc.h>
|
|
#include <fpu_control.h>
|
|
|
|
int
|
|
fetestexcept (int excepts)
|
|
{
|
|
fexcept_t temp, res;
|
|
|
|
/* Get current exceptions. */
|
|
_FPU_GETCW (temp);
|
|
res = temp >> FPC_FLAGS_SHIFT;
|
|
if ((temp & FPC_NOT_FPU_EXCEPTION) == 0)
|
|
/* Bits 6, 7 of dxc-byte are zero,
|
|
thus bits 0-5 of dxc-byte correspond to the flag-bits.
|
|
Evaluate flags and last dxc-exception-code. */
|
|
res |= temp >> FPC_DXC_SHIFT;
|
|
|
|
return res & excepts & FE_ALL_EXCEPT;
|
|
}
|
|
libm_hidden_def (fetestexcept)
|