/* Test exception in current environment. Copyright (C) 1997, 2003, 2004 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> int fetestexcept (int excepts) { short temp; int xtemp = 0; /* Get current exceptions. */ __asm__ ("fnstsw %0" : "=a" (temp)); #if 0 /* If the CPU supports SSE we test the MXCSR as well. */ if ((GLRO(dl_hwcap) & HWCAP_I386_XMM) != 0) __asm__ ("stmxcsr %0" : "=m" (*&xtemp)); #endif return (temp | xtemp) & excepts & FE_ALL_EXCEPT; }