mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 02:40:06 +00:00
85b290451e
This patch fixes the inline feraiseexcept and feclearexcept macros for powerpc by casting the input argument to integer before operation on it. It fixes BZ#17776.
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/* Inline floating-point environment handling functions for powerpc.
|
|
Copyright (C) 1995-2015 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/>. */
|
|
|
|
#if defined __GNUC__ && !defined _SOFT_FLOAT && !defined __NO_FPRS__
|
|
|
|
/* Inline definition for fegetround. */
|
|
# define __fegetround() \
|
|
(__extension__ ({ int __fegetround_result; \
|
|
__asm__ __volatile__ \
|
|
("mcrfs 7,7 ; mfcr %0" \
|
|
: "=r"(__fegetround_result) : : "cr7"); \
|
|
__fegetround_result & 3; }))
|
|
# define fegetround() __fegetround ()
|
|
|
|
# ifndef __NO_MATH_INLINES
|
|
/* 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) \
|
|
(__extension__ ({ \
|
|
int __e = __excepts; \
|
|
int __ret; \
|
|
if (__builtin_constant_p (__e) \
|
|
&& (__e & (__e - 1)) == 0 \
|
|
&& __e != FE_INVALID) \
|
|
{ \
|
|
if (__e != 0) \
|
|
__asm__ __volatile__ ("mtfsb1 %s0" \
|
|
: : "i#*X" (__builtin_ffs (__e))); \
|
|
__ret = 0; \
|
|
} \
|
|
else \
|
|
__ret = feraiseexcept (__e); \
|
|
__ret; \
|
|
}))
|
|
|
|
/* Inline definition for feclearexcept. */
|
|
# define feclearexcept(__excepts) \
|
|
(__extension__ ({ \
|
|
int __e = __excepts; \
|
|
int __ret; \
|
|
if (__builtin_constant_p (__e) \
|
|
&& (__e & (__e - 1)) == 0 \
|
|
&& __e != FE_INVALID) \
|
|
{ \
|
|
if (__e != 0) \
|
|
__asm__ __volatile__ ("mtfsb0 %s0" \
|
|
: : "i#*X" (__builtin_ffs (__e))); \
|
|
__ret = 0; \
|
|
} \
|
|
else \
|
|
__ret = feclearexcept (__e); \
|
|
__ret; \
|
|
}))
|
|
|
|
# endif /* !__NO_MATH_INLINES. */
|
|
|
|
#endif /* __GNUC__ && !_SOFT_FLOAT && !__NO_FPRS__ */
|