summaryrefslogtreecommitdiff
path: root/usr/src/head/float.h
blob: d435afed58e13c7f7238de4fedad2824aa3b4282 (plain)
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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*
 * 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) 1988 AT&T	*/
/*	  All Rights Reserved	*/


/*
 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
 *
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _FLOAT_H
#define	_FLOAT_H

#include <sys/feature_tests.h>

#ifdef	__cplusplus
extern "C" {
#endif

#if defined(__sparc)

extern int __flt_rounds(void);
#define	FLT_ROUNDS	__flt_rounds()

#else /* defined(__sparc) */

extern int __fltrounds(void);

#if defined(__amd64)
#define	FLT_ROUNDS	__fltrounds()
#else	/* defined(__amd64) */
extern int __flt_rounds;
#define	FLT_ROUNDS	__flt_rounds
#endif	/* defined(__amd64) */
#endif /* defined(__sparc) */

/* Introduced in ISO/IEC 9899:1999 standard */
#if defined(__EXTENSIONS__) || defined(_STDC_C99) || \
	(!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX))
#if defined(__FLT_EVAL_METHOD__)
#define	FLT_EVAL_METHOD __FLT_EVAL_METHOD__
#else
#define	FLT_EVAL_METHOD	-1
#endif /* defined(__FLT_EVAL_METHOD__) */
#endif /* defined(__EXTENSIONS__) || defined(_STDC_C99)... */

#define	FLT_RADIX	2
#define	FLT_MANT_DIG	24
#define	FLT_EPSILON	1.1920928955078125000000E-07F
#define	FLT_DIG		6
#define	FLT_MIN_EXP	(-125)
#define	FLT_MIN		1.1754943508222875079688E-38F
#define	FLT_MIN_10_EXP	(-37)
#define	FLT_MAX_EXP	(+128)
#define	FLT_MAX		3.4028234663852885981170E+38F
#define	FLT_MAX_10_EXP	(+38)

#define	DBL_MANT_DIG	53
#define	DBL_EPSILON	2.2204460492503130808473E-16
#define	DBL_DIG		15
#define	DBL_MIN_EXP	(-1021)
#define	DBL_MIN		2.2250738585072013830903E-308
#define	DBL_MIN_10_EXP	(-307)
#define	DBL_MAX_EXP	(+1024)
#define	DBL_MAX		1.7976931348623157081452E+308
#define	DBL_MAX_10_EXP	(+308)

/* Introduced in ISO/IEC 9899:1999 standard */
#if defined(__EXTENSIONS__) || defined(_STDC_C99) || \
	(!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX))
#if defined(__sparc)
#define	DECIMAL_DIG	36
#elif defined(__i386) || defined(__amd64)
#define	DECIMAL_DIG	21
#endif
#endif /* defined(__EXTENSIONS__) || defined(_STDC_C99)... */


#if defined(__i386) || defined(__amd64)

/* Follows IEEE standards for 80-bit floating point */
#define	LDBL_MANT_DIG	64
#define	LDBL_EPSILON	1.0842021724855044340075E-19L
#define	LDBL_DIG	18
#define	LDBL_MIN_EXP	(-16381)
#define	LDBL_MIN	3.3621031431120935062627E-4932L
#define	LDBL_MIN_10_EXP	(-4931)
#define	LDBL_MAX_EXP	(+16384)
#define	LDBL_MAX	1.1897314953572317650213E+4932L
#define	LDBL_MAX_10_EXP	(+4932)

#elif defined(__sparc)

/* Follows IEEE standards for 128-bit floating point */
#define	LDBL_MANT_DIG	113
#define	LDBL_EPSILON	1.925929944387235853055977942584927319E-34L
#define	LDBL_DIG	33
#define	LDBL_MIN_EXP	(-16381)
#define	LDBL_MIN	3.362103143112093506262677817321752603E-4932L
#define	LDBL_MIN_10_EXP	(-4931)
#define	LDBL_MAX_EXP	(+16384)
#define	LDBL_MAX	1.189731495357231765085759326628007016E+4932L
#define	LDBL_MAX_10_EXP	(+4932)

#else

#error "Unknown architecture!"

#endif


#ifdef	__cplusplus
}
#endif

#endif	/* _FLOAT_H */