/* Clear given exceptions in current floating-point environment. Copyright (C) 2000-2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by David Huggins-Daines <dhd@debian.org>, 2000 The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library. If not, see <http://www.gnu.org/licenses/>. */ #include <fenv.h> int feclearexcept (int excepts) { union { unsigned long long l; unsigned int sw[2]; } s; /* Get the current status word. */ __asm__ ("fstd %%fr0,0(%1)" : "=m" (s.l) : "r" (&s.l) : "%r0"); /* Clear all the relevant bits. */ s.sw[0] &= ~((excepts & FE_ALL_EXCEPT) << 27); __asm__ ("fldd 0(%0),%%fr0" : : "r" (&s.l), "m" (s.l) : "%r0"); /* Success. */ return 0; } libm_hidden_def (feclearexcept)