/* Store current floating-point environment and clear exceptions. Copyright (C) 2000-2013 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com). 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_libc.h> #include <fpu_control.h> int feholdexcept (fenv_t *envp) { fexcept_t fpc; /* Store the environment. */ fegetenv (envp); /* Clear the current sticky bits as more than one exception may be generated. */ fpc = envp->__fpc & ~(FPC_FLAGS_MASK | FPC_DXC_MASK); /* Hold from generating fpu exceptions temporarily. */ _FPU_SETCW ((fpc & ~(FE_ALL_EXCEPT << FPC_EXCEPTION_MASK_SHIFT))); return 0; } libm_hidden_def (feholdexcept)