1 /* Install given floating-point control modes. RISC-V version.
2 Copyright (C) 2017-2025 Free Software Foundation, Inc.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <fenv.h>
19 #include <fpu_control.h>
20
21 int
fesetmode(const femode_t * modep)22 fesetmode (const femode_t *modep)
23 {
24 __asm__ volatile ("csrc fcsr, %0" : : "r" (~FE_ALL_EXCEPT));
25
26 if (modep != FE_DFL_MODE)
27 __asm__ volatile ("csrs fcsr, %0" : : "r" (*modep & ~FE_ALL_EXCEPT));
28
29 return 0;
30 }
31