1 /* Install given floating-point environment and raise exceptions, 2 without clearing currently raised exceptions. 3 Copyright (C) 2020-2021 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library. If not, see 18 <https://www.gnu.org/licenses/>. */ 19 20 #include <fenv.h> 21 #include <fpu_control.h> 22 23 int __feupdateenv(const fenv_t * envp)24__feupdateenv (const fenv_t *envp) 25 { 26 unsigned int fpcr; 27 unsigned int fpsr; 28 29 _FPU_GETS (fpsr); 30 31 if (envp == FE_DFL_ENV) 32 { 33 fpcr = _FPU_DEFAULT; 34 } 35 else 36 { 37 fpcr = envp->__fpcr; 38 39 /* currently raised exceptions need to be preserved. */ 40 fpsr |= envp->__fpsr; 41 } 42 43 _FPU_SETCW (fpcr); 44 _FPU_SETS (fpsr); 45 46 /* Success. */ 47 return 0; 48 } 49 libm_hidden_def (__feupdateenv) 50 weak_alias (__feupdateenv, feupdateenv) 51 libm_hidden_weak (feupdateenv) 52