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/* Set floating-point environment exception handling.
Copyright (C) 1997-2019 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
<https://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fpu_control.h>
#include <arm-features.h>
int
fesetexceptflag (const fexcept_t *flagp, int excepts)
{
fpu_control_t fpscr, new_fpscr;
/* Fail if a VFP unit isn't present unless nothing needs to be done. */
if (!ARM_HAVE_VFP)
return (excepts != 0);
_FPU_GETCW (fpscr);
excepts &= FE_ALL_EXCEPT;
/* Set the desired exception mask. */
new_fpscr = fpscr & ~excepts;
new_fpscr |= *flagp & excepts;
/* Write new exception flags if changed. */
if (new_fpscr != fpscr)
_FPU_SETCW (new_fpscr);
return 0;
}
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