?? feupdateenv.c
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/* Install given floating-point environment and raise exceptions. Copyright (C) 1997,99,2000,01,07 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */#include <fenv.h>int__feupdateenv (const fenv_t *envp){ fexcept_t temp; unsigned int xtemp; /* Save current exceptions. */ __asm__ ("fnstsw %0\n\tstmxcsr %1" : "=m" (*&temp), "=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);#endifversioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
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