| /* Install given floating-point control modes. Alpha version. |
| Copyright (C) 2016-2018 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_libc.h> |
| |
| int |
| fesetmode (const femode_t *modep) |
| { |
| unsigned long int fpcr; |
| unsigned long int swcr; |
| femode_t mode; |
| |
| /* As in fesetenv. */ |
| if ((long int) modep >= 0) |
| mode = *modep; |
| else |
| mode = (unsigned long int) modep; |
| |
| __asm__ __volatile__ ("excb; mf_fpcr %0" : "=f" (fpcr)); |
| fpcr = (fpcr & ~FPCR_ROUND_MASK) | (mode & FPCR_ROUND_MASK); |
| __asm__ __volatile__ ("mt_fpcr %0" : : "f" (fpcr)); |
| |
| swcr = __ieee_get_fp_control (); |
| swcr = ((mode & SWCR_ALL_MASK & ~SWCR_STATUS_MASK) |
| | (swcr & SWCR_STATUS_MASK)); |
| __ieee_set_fp_control (swcr); |
| |
| return 0; |
| } |
