| /* Clear given exceptions in current floating-point environment. |
| Copyright (C) 1998-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Andreas Jaeger <aj@suse.de>, 1998. |
| |
| 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> |
| #include <fenv_libc.h> |
| #include <fpu_control.h> |
| |
| int |
| feclearexcept (int excepts) |
| { |
| int cw; |
| |
| /* Mask out unsupported bits/exceptions. */ |
| excepts &= FE_ALL_EXCEPT; |
| |
| /* Read the complete control word. */ |
| _FPU_GETCW (cw); |
| |
| /* Clear exception flag bits and cause bits. If the cause bit is not |
| cleared, the next CTC instruction (just below) will re-generate the |
| exception. */ |
| |
| cw &= ~(excepts | (excepts << CAUSE_SHIFT)); |
| |
| /* Put the new data in effect. */ |
| _FPU_SETCW (cw); |
| |
| /* Success. */ |
| return 0; |
| } |
| libm_hidden_def (feclearexcept) |
