| /* Set current rounding direction. |
| Copyright (C) 2004-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| 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> |
| #include <arm-features.h> |
| |
| |
| int |
| fesetround (int round) |
| { |
| if (ARM_HAVE_VFP) |
| { |
| fpu_control_t temp; |
| |
| switch (round) |
| { |
| case FE_TONEAREST: |
| case FE_UPWARD: |
| case FE_DOWNWARD: |
| case FE_TOWARDZERO: |
| _FPU_GETCW (temp); |
| temp = (temp & ~FE_TOWARDZERO) | round; |
| _FPU_SETCW (temp); |
| return 0; |
| default: |
| return 1; |
| } |
| } |
| else if (round == FE_TONEAREST) |
| /* This is the only supported rounding mode for soft-fp. */ |
| return 0; |
| |
| /* Unsupported, so fail. */ |
| return 1; |
| } |
| |
| libm_hidden_def (fesetround) |
