| /* Set the FPU control word. |
| Copyright (C) 1996-2016 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 <math.h> |
| #include <fpu_control.h> |
| #include <arm-features.h> |
| |
| |
| void |
| __setfpucw (fpu_control_t set) |
| { |
| fpu_control_t fpscr, new_fpscr; |
| |
| /* Do nothing if a VFP unit isn't present. */ |
| if (!ARM_HAVE_VFP) |
| return; |
| |
| _FPU_GETCW (fpscr); |
| |
| /* Preserve the reserved bits, and set the rest as the user |
| specified (or the default, if the user gave zero). */ |
| new_fpscr = fpscr & _FPU_RESERVED; |
| new_fpscr |= set & ~_FPU_RESERVED; |
| |
| /* Write FPSCR if changed. */ |
| if (new_fpscr != fpscr) |
| _FPU_SETCW (fpscr); |
| } |