1/* $OpenBSD: limits.h,v 1.10 2012/06/30 20:21:10 guenther Exp $ */
2/*
3 * Copyright (c) 2002 Marc Espie.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
18 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26#ifndef _SYS_LIMITS_H_
27#define _SYS_LIMITS_H_
28
29#include <sys/cdefs.h>
30
31/* Common definitions for limits.h. */
32
33/* Legacy */
34#include <machine/limits.h>
35
36#define CHAR_BIT 8 /* number of bits in a char */
37
38#define SCHAR_MAX 0x7f /* max value for a signed char */
39#define SCHAR_MIN (-0x7f-1) /* min value for a signed char */
40
41#define UCHAR_MAX 0xff /* max value for an unsigned char */
42#ifdef __CHAR_UNSIGNED__
43# define CHAR_MIN 0 /* min value for a char */
44# define CHAR_MAX 0xff /* max value for a char */
45#else
46# define CHAR_MAX 0x7f
47# define CHAR_MIN (-0x7f-1)
48#endif
49
50#define MB_LEN_MAX 4 /* Allow UTF-8 (RFC 3629) */
51
52#define USHRT_MAX 0xffff /* max value for an unsigned short */
53#define SHRT_MAX 0x7fff /* max value for a short */
54#define SHRT_MIN (-0x7fff-1) /* min value for a short */
55
56#define UINT_MAX 0xffffffffU /* max value for an unsigned int */
57#define INT_MAX 0x7fffffff /* max value for an int */
58#define INT_MIN (-0x7fffffff-1) /* min value for an int */
59
60#ifdef __LP64__
61# define ULONG_MAX 0xffffffffffffffffUL
62 /* max value for unsigned long */
63# define LONG_MAX 0x7fffffffffffffffL
64 /* max value for a signed long */
65# define LONG_MIN (-0x7fffffffffffffffL-1)
66 /* min value for a signed long */
67#else
68# define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */
69# define LONG_MAX 0x7fffffffL /* max value for a long */
70# define LONG_MIN (-0x7fffffffL-1)/* min value for a long */
71#endif
72
73#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999
74# define ULLONG_MAX 0xffffffffffffffffULL
75 /* max value for unsigned long long */
76# define LLONG_MAX 0x7fffffffffffffffLL
77 /* max value for a signed long long */
78# define LLONG_MIN (-0x7fffffffffffffffLL-1)
79 /* min value for a signed long long */
80#endif
81
82#if __BSD_VISIBLE
83# define UID_MAX UINT_MAX /* max value for a uid_t */
84# define GID_MAX UINT_MAX /* max value for a gid_t */
85#endif
86
87#if __XPG_VISIBLE || __POSIX_VISIBLE >= 200809
88# ifdef __LP64__
89# define LONG_BIT 64
90# else
91# define LONG_BIT 32
92# endif
93# define WORD_BIT 32
94#endif
95
96#if __XPG_VISIBLE < 600
97# include <machine/_float.h>
98
99/* XSI defines marked LEGACY in XPG5 and removed in IEEE Std 1003.1-2001 */
100# ifndef FLT_DIG
101# define FLT_DIG __FLT_DIG
102# endif
103# ifndef FLT_MAX
104# define FLT_MAX __FLT_MAX
105# endif
106# ifndef DBL_DIG
107# define DBL_DIG __DBL_DIG
108# endif
109# ifndef DBL_MAX
110# define DBL_MAX __DBL_MAX
111# endif
112
113/* XSI defines marked LEGACY in XPG4v2 and removed in XPG5 */
114# if __XPG_VISIBLE < 500
115# ifndef FLT_MIN
116# define FLT_MIN __FLT_MIN
117# endif
118# ifndef DBL_MIN
119# define DBL_MIN __DBL_MIN
120# endif
121# endif
122
123#endif /* __XPG_VISIBLE < 600 */
124
125#endif