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- /* 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. */
- #include <features.h>
- /*
- * Disable for e500, uses library functions instead of in lines.
- */
- #ifndef __CONFIG_E500__
- #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 */
- #endif /* __CONFIG_E500__ */
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