blob: 7079d1a46d44c6cebc4e9d9b58218cb57a0c6c8d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/* Inline floating-point environment handling functions for powerpc.
Copyright (C) 1995-2019 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'. */
# if __GNUC_PREREQ(3, 4)
/* 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 %0" \
: : "i#*X" (__builtin_clz (__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 %0" \
: : "i#*X" (__builtin_clz (__e))); \
__ret = 0; \
} \
else \
__ret = feclearexcept (__e); \
__ret; \
}))
# endif /* __GNUC_PREREQ(3, 4). */
# endif /* !__NO_MATH_INLINES. */
#endif /* __GNUC__ && !_SOFT_FLOAT && !__NO_FPRS__ */
|
