| /* Set current rounding direction. |
| Copyright (C) 1998, 2000, 2005 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <fenv.h> |
| #include <fpu_control.h> |
| |
| int |
| fesetround (int round) |
| { |
| unsigned int cw; |
| |
| if ((round & ~0x3) != 0) |
| /* ROUND is no valid rounding mode. */ |
| return 0; |
| |
| /* Get current state. */ |
| _FPU_GETCW (cw); |
| |
| /* Set rounding bits. */ |
| cw &= ~0x3; |
| cw |= round; |
| /* Set new state. */ |
| _FPU_SETCW (cw); |
| |
| return 1; |
| } |
| libm_hidden_def (fesetround) |
