| /* 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #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 */ |
