1 /* Disable floating-point exceptions. 2 Copyright (C) 2018-2025 Free Software Foundation, Inc. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library. If not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #include <fenv.h> 19 #include "fenv_libc.h" 20 #include <fpu_control.h> 21 22 int fedisableexcept(int excepts)23fedisableexcept (int excepts) 24 { 25 unsigned int new_exc, old_exc; 26 27 /* Get the current control word. */ 28 _FPU_GETCW (new_exc); 29 30 old_exc = (new_exc & ENABLE_MASK) >> ENABLE_SHIFT; 31 32 /* Get the except disable mask. */ 33 excepts &= FE_ALL_EXCEPT; 34 new_exc &= ~(excepts << ENABLE_SHIFT); 35 36 /* Put the new data in effect. */ 37 _FPU_SETCW (new_exc); 38 39 return old_exc; 40 } 41