1/* 2 * Copyright (C) 2001-2015 Free Software Foundation, Inc. 3 * Contributed by Richard Henderson (rth@redhat.com) 4 * 5 * This file is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the 7 * Free Software Foundation; either version 3, or (at your option) any 8 * later version. 9 * 10 * This file is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * Under Section 7 of GPL version 3, you are granted additional 16 * permissions described in the GCC Runtime Library Exception, version 17 * 3.1, as published by the Free Software Foundation. 18 * 19 * You should have received a copy of the GNU General Public License and 20 * a copy of the GCC Runtime Library Exception along with this program; 21 * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 22 * <http://www.gnu.org/licenses/>. 23 */ 24 25/* Assume OSF/1 compatible interfaces. */ 26 27extern void __ieee_set_fp_control (unsigned long int); 28 29#define IEEE_MAP_DMZ (1UL<<12) /* Map denorm inputs to zero */ 30#define IEEE_MAP_UMZ (1UL<<13) /* Map underflowed outputs to zero */ 31 32static void __attribute__((constructor)) 33set_fast_math (void) 34{ 35 __ieee_set_fp_control (IEEE_MAP_DMZ | IEEE_MAP_UMZ); 36} 37