| /* Test exception in current environment. |
| Copyright (C) 2000-2018 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 |
| fetestexcept (int excepts) |
| { |
| fexcept_t temp, res; |
| |
| /* Get current exceptions. */ |
| _FPU_GETCW (temp); |
| res = temp >> FPC_FLAGS_SHIFT; |
| if ((temp & FPC_NOT_FPU_EXCEPTION) == 0) |
| /* Bits 6, 7 of dxc-byte are zero, |
| thus bits 0-5 of dxc-byte correspond to the flag-bits. |
| Evaluate flags and last dxc-exception-code. */ |
| res |= temp >> FPC_DXC_SHIFT; |
| |
| return res & excepts & FE_ALL_EXCEPT; |
| } |
| libm_hidden_def (fetestexcept) |
