1 /* Install given floating-point control modes.  RISC-V version.
2    Copyright (C) 2017-2021 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.h>
20 #include <fpu_control.h>
21 
22 int
fesetmode(const femode_t * modep)23 fesetmode (const femode_t *modep)
24 {
25   asm volatile ("csrc fcsr, %0" : : "r" (~FE_ALL_EXCEPT));
26 
27   if (modep != FE_DFL_MODE)
28     asm volatile ("csrs fcsr, %0" : : "r" (*modep & ~FE_ALL_EXCEPT));
29 
30   return 0;
31 }
32