/* Inline floating-point environment handling functions for powerpc. Copyright (C) 1995, 1996, 1997, 1998, 1999, 2006 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 <features.h> #if defined __GNUC__ && !defined _SOFT_FLOAT && !defined __NO_MATH_INLINES /* Inline definition for fegetround. */ # define fegetround() \ (__extension__ ({ int __fegetround_result; \ __asm__ __volatile__ \ ("mcrfs 7,7 ; mfcr %0" \ : "=r"(__fegetround_result) : : "cr7"); \ __fegetround_result & 3; })) /* The weird 'i#*X' constraints on the following suppress a gcc warning when __excepts is not a constant. Otherwise, they mean the same as just plain 'i'. */ /* Inline definition for feraiseexcept. */ # define feraiseexcept(__excepts) \ ((__builtin_constant_p (__excepts) \ && ((__excepts) & ((__excepts)-1)) == 0 \ && (__excepts) != FE_INVALID) \ ? ((__excepts) != 0 \ ? (__extension__ ({ __asm__ __volatile__ \ ("mtfsb1 %s0" \ : : "i#*X"(__builtin_ffs (__excepts))); \ 0; })) \ : 0) \ : (feraiseexcept) (__excepts)) /* Inline definition for feclearexcept. */ # define feclearexcept(__excepts) \ ((__builtin_constant_p (__excepts) \ && ((__excepts) & ((__excepts)-1)) == 0 \ && (__excepts) != FE_INVALID) \ ? ((__excepts) != 0 \ ? (__extension__ ({ __asm__ __volatile__ \ ("mtfsb0 %s0" \ : : "i#*X"(__builtin_ffs (__excepts))); \ 0; })) \ : 0) \ : (feclearexcept) (__excepts)) #endif /* __GNUC__ && !_SOFT_FLOAT */