mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 03:31:07 +00:00
4efb5faf8c
the (void) casts as now feraiseexcept returns a value. (feclearexcept): Likewise. * sysdeps/unix/sysv/linux/powerpc/sysdep.h: Don't use '%r0', it interferes with the macros for AIX. 1999-12-30 Geoff Keating <geoffk@cygnus.com> * sysdeps/powerpc/fpu/bits/fenvinline.h (feraiseexcept): Remove the (void) casts as now feraiseexcept returns a value. (feclearexcept): Likewise. * sysdeps/unix/sysv/linux/powerpc/sysdep.h: Don't use '%r0', it interferes with the macros for AIX.
60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/* Inline floating-point environment handling functions for powerpc.
|
|
Copyright (C) 1995, 1996, 1997, 1998, 1999 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. 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__ ("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 */
|