1 /* Install given floating-point control modes. OpenRISC version. 2 Copyright (C) 2024-2025 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)22fesetmode (const femode_t *modep) 23 { 24 fpu_control_t cw; 25 fpu_control_t cw_new; 26 27 _FPU_GETCW (cw); 28 cw_new = cw & ~_FPU_FPCSR_RM_MASK; 29 if (modep == FE_DFL_MODE) 30 cw_new |= (_FPU_DEFAULT & _FPU_FPCSR_RM_MASK); 31 else 32 cw_new |= (*modep & _FPU_FPCSR_RM_MASK); 33 if (cw != cw_new) 34 _FPU_SETCW (cw_new); 35 36 /* Success. */ 37 return 0; 38 } 39