1 /* Store current floating-point environment and clear exceptions. 2 Copyright (C) 1997-2021 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 __feholdexcept(fenv_t * envp)23__feholdexcept (fenv_t *envp) 24 { 25 fpu_control_t temp; 26 27 /* Store the environment. */ 28 _FPU_GETCW (temp); 29 envp->__fpscr = temp; 30 31 /* Clear the status flags. */ 32 temp &= ~FE_ALL_EXCEPT; 33 34 /* Now set all exceptions to non-stop. */ 35 temp &= ~(FE_ALL_EXCEPT << 5); 36 37 _FPU_SETCW (temp); 38 39 /* Success. */ 40 return 0; 41 } 42 libm_hidden_def (__feholdexcept) 43 weak_alias (__feholdexcept, feholdexcept) 44 libm_hidden_weak (feholdexcept) 45