1 /* Store current floating-point environment and clear exceptions. 2 Copyright (C) 2000-2022 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 __feholdexcept(fenv_t * envp)23__feholdexcept (fenv_t *envp) 24 { 25 fpu_control_t cw; 26 27 /* Save the current state. */ 28 _FPU_GETCW (cw); 29 envp->__fp_control_register = cw; 30 31 /* Clear all exception enable bits and flags. */ 32 cw &= ~(_FPU_MASK_V|_FPU_MASK_Z|_FPU_MASK_O|_FPU_MASK_U|_FPU_MASK_I|FE_ALL_EXCEPT); 33 _FPU_SETCW (cw); 34 35 return 0; 36 } 37 38 libm_hidden_def (__feholdexcept) 39 weak_alias (__feholdexcept, feholdexcept) 40 libm_hidden_weak (feholdexcept) 41