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 21 int feenableexcept(int excepts)22feenableexcept (int excepts) 23 { 24 fenv_t old_fpsr; 25 fenv_t new_fpsr; 26 27 /* Get the current fpsr. */ 28 __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (old_fpsr)); 29 30 new_fpsr = old_fpsr & ~((fenv_t) excepts & FE_ALL_EXCEPT); 31 32 __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (new_fpsr) : "memory"); 33 34 return (old_fpsr ^ FE_ALL_EXCEPT) & FE_ALL_EXCEPT; 35 } 36