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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1987 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _SYS_FPU_IEEE_H
#define _SYS_FPU_IEEE_H
#pragma ident "%Z%%M% %I% %E% SMI" /* SunOS-4.0 1.4 */
#ifdef __cplusplus
extern "C" {
#endif
/*
* Sparc IEEE floating-point support PUBLIC include file.
*/
/* PUBLIC TYPES */
/*
* IEEE Arithmetic types... numbered to correspond to fsr fields.
*/
/*
* rounding direction
*/
enum fp_rounding_direction {
fp_rd_nearest = 0,
fp_rd_zero = 1,
fp_rd_plus = 2,
fp_rd_minus = 3
};
/*
* extended rounding precision
*/
enum fp_rounding_precision {
fp_rp_extended = 0,
fp_rp_single = 1,
fp_rp_double = 2,
fp_rp_3 = 3
};
/*
* exceptions according to cexc bit number
*/
enum fp_exception_type {
fp_inexact = 0,
fp_divide = 1,
fp_underflow = 2,
fp_overflow = 3,
fp_invalid = 4
};
/*
* floating-point classes according to fclass
*/
enum fp_class_type {
fp_zero = 0,
fp_normal = 1, /* Includes subnormal. */
fp_infinity = 2,
fp_nan = 3, /* Includes quiet and signaling NaN. */
};
/* PUBLIC GLOBAL VARIABLES */
unsigned fp_accrued_exceptions; /* Sticky accumulated exceptions. */
/* PUBLIC FUNCTIONS */
#ifdef __STDC__
extern enum
fp_rounding_direction swap_rounding_direction(enum fp_rounding_direction);
/* Change rounding mode; return previous. */
extern int swap_accrued_exceptions(int);
/* Change accrued exceptions; return previous. */
#else /* __STDC__ */
extern enum fp_rounding_direction swap_rounding_direction(/* rd */);
/* extern enum fp_rounding_direction rd; */
/* Change rounding mode; return previous. */
extern int swap_accrued_exceptions(/* x */);
/* int x; */
/* Change accrued exceptions; return previous. */
#endif /* ! __STDC__ */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FPU_IEEE_H */
|
