1 /* Install given floating-point environment (doesnot raise exceptions). 2 Copyright (C) 2020-2021 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 __fesetenv(const fenv_t * envp)23__fesetenv (const fenv_t *envp) 24 { 25 unsigned int fpcr; 26 unsigned int fpsr; 27 28 if (envp == FE_DFL_ENV) 29 { 30 fpcr = _FPU_DEFAULT; 31 fpsr = _FPU_FPSR_DEFAULT; 32 } 33 else 34 { 35 /* No need to mask out reserved bits as they are IoW. */ 36 fpcr = envp->__fpcr; 37 fpsr = envp->__fpsr; 38 } 39 40 _FPU_SETCW (fpcr); 41 _FPU_SETS (fpsr); 42 43 /* Success. */ 44 return 0; 45 } 46 libm_hidden_def (__fesetenv) 47 weak_alias (__fesetenv, fesetenv) 48 libm_hidden_weak (fesetenv) 49