1 /* Enable floating-point 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 <fenv_private.h> 21 22 int feenableexcept(int excepts)23feenableexcept (int excepts) 24 { 25 fenv_t new_exc, old_exc; 26 27 __fenv_stfsr (new_exc); 28 29 old_exc = (new_exc >> 18) & FE_ALL_EXCEPT; 30 new_exc |= (((fenv_t)excepts & FE_ALL_EXCEPT) << 18); 31 32 __fenv_ldfsr (new_exc); 33 34 return old_exc; 35 } 36