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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>
#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 */
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