| /* Install given floating-point environment and raise exceptions. |
| Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| |
| 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 <unistd.h> |
| #include <dl-procinfo.h> |
| #include <ldsodefs.h> |
| |
| int |
| __feupdateenv (const fenv_t *envp) |
| { |
| fexcept_t temp; |
| unsigned int xtemp = 0; |
| |
| /* Save current exceptions. */ |
| __asm__ ("fnstsw %0" : "=m" (*&temp)); |
| |
| /* If the CPU supports SSE we test the MXCSR as well. */ |
| if ((GLRO(dl_hwcap) & HWCAP_I386_XMM) != 0) |
| __asm__ ("stmxcsr %0" : "=m" (*&xtemp)); |
| |
| temp = (temp | xtemp) & FE_ALL_EXCEPT; |
| |
| /* Install new environment. */ |
| fesetenv (envp); |
| |
| /* Raise the saved exception. Incidently for us the implementation |
| defined format of the values in objects of type fexcept_t is the |
| same as the ones specified using the FE_* constants. */ |
| __feraiseexcept ((int) temp); |
| |
| /* Success. */ |
| return 0; |
| } |
| |
| #include <shlib-compat.h> |
| #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) |
| strong_alias (__feupdateenv, __old_feupdateenv) |
| compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1); |
| #endif |
| |
| libm_hidden_ver (__feupdateenv, feupdateenv) |
| versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2); |
