glibc/sysdeps/alpha/fpu/fesetmode.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

45 lines
1.4 KiB
C

/* Install given floating-point control modes. Alpha version.
Copyright (C) 2016-2021 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
fesetmode (const femode_t *modep)
{
unsigned long int fpcr;
unsigned long int swcr;
femode_t mode;
/* As in fesetenv. */
if ((long int) modep >= 0)
mode = *modep;
else
mode = (unsigned long int) modep;
__asm__ __volatile__ ("excb; mf_fpcr %0" : "=f" (fpcr));
fpcr = (fpcr & ~FPCR_ROUND_MASK) | (mode & FPCR_ROUND_MASK);
__asm__ __volatile__ ("mt_fpcr %0" : : "f" (fpcr));
swcr = __ieee_get_fp_control ();
swcr = ((mode & SWCR_ALL_MASK & ~SWCR_STATUS_MASK)
| (swcr & SWCR_STATUS_MASK));
__ieee_set_fp_control (swcr);
return 0;
}