1 /* Install given floating-point environment. 2 Copyright (C) 1998-2022 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 fpu_control_t cw; 26 27 /* Read first current state to flush fpu pipeline. */ 28 _FPU_GETCW (cw); 29 30 if (envp == FE_DFL_ENV) 31 _FPU_SETCW (_FPU_DEFAULT); 32 else if (envp == FE_NOMASK_ENV) 33 _FPU_SETCW (_FPU_IEEE); 34 else 35 _FPU_SETCW (envp->__fp_control_register); 36 37 /* Success. */ 38 return 0; 39 } 40 41 libm_hidden_def (__fesetenv) 42 weak_alias (__fesetenv, fesetenv) 43 libm_hidden_weak (fesetenv) 44