| /* Set current rounding direction. |
| Copyright (C) 1998-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.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 <fpu_control.h> |
| |
| int |
| __fesetround (int round) |
| { |
| fpu_control_t cw; |
| |
| if ((round & ~_FPU_RC_MASK) != 0) |
| /* ROUND is no valid rounding mode. */ |
| return 1; |
| |
| /* Get current state. */ |
| _FPU_GETCW (cw); |
| |
| /* Set rounding bits. */ |
| cw &= ~_FPU_RC_MASK; |
| cw |= round; |
| /* Set new state. */ |
| _FPU_SETCW (cw); |
| |
| return 0; |
| } |
| |
| libm_hidden_def (__fesetround) |
| weak_alias (__fesetround, fesetround) |
| libm_hidden_weak (fesetround) |