1 /* Store current floating-point control modes. Alpha version.
2 Copyright (C) 2016-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <fenv_libc.h>
20
21 int
fegetmode(femode_t * modep)22 fegetmode (femode_t *modep)
23 {
24 unsigned long int fpcr;
25 unsigned long int swcr;
26
27 /* As in fegetenv. */
28 swcr = __ieee_get_fp_control ();
29 __asm__ __volatile__ ("mf_fpcr %0" : "=f" (fpcr));
30 *modep = ((fpcr & FPCR_ROUND_MASK) | (swcr & SWCR_ALL_MASK));
31
32 return 0;
33 }
34