1 /* Set current rounding direction.
2 Copyright (C) 1997-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
19 #include <fenv_libc.h>
22 __fesetround (int round
)
29 /* Get the current state. */
30 __asm__
__volatile__("excb; mf_fpcr %0" : "=f"(fpcr
));
32 /* Set the relevant bits. */
33 fpcr
= ((fpcr
& ~FPCR_ROUND_MASK
)
34 | ((unsigned long)round
<< FPCR_ROUND_SHIFT
));
36 /* Put the new state in effect. */
37 __asm__
__volatile__("mt_fpcr %0; excb" : : "f"(fpcr
));
41 libm_hidden_def (__fesetround
)
42 weak_alias (__fesetround
, fesetround
)
43 libm_hidden_weak (fesetround
)