master
1/* $NetBSD: common_limits.h,v 1.3 2019/01/21 20:29:27 dholland Exp $ */
2
3/*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _SYS_COMMON_LIMITS_H_
33#define _SYS_COMMON_LIMITS_H_
34
35#define CHAR_BIT __CHAR_BIT__ /* number of bits in a char */
36
37#define SCHAR_MIN (-__SCHAR_MAX__-1) /* min value for a signed char */
38#define SCHAR_MAX __SCHAR_MAX__ /* max value for a signed char */
39#define UCHAR_MAX (2*SCHAR_MAX+1) /* max value for an unsigned char */
40
41#define SHRT_MIN (-__SHRT_MAX__-1) /* min value for a short */
42#define SHRT_MAX __SHRT_MAX__ /* max value for a short */
43#define USHRT_MAX (2*SHRT_MAX+1) /* max value for an unsigned short */
44
45#define INT_MIN (-__INT_MAX__-1) /* min value for an int */
46#define INT_MAX __INT_MAX__ /* max value for an int */
47#define UINT_MAX (2U*INT_MAX+1U) /* max value for an unsigned int */
48
49#define LONG_MIN (-__LONG_MAX__-1L) /* min value for a long */
50#define LONG_MAX __LONG_MAX__ /* max value for a long */
51#define ULONG_MAX (2UL*LONG_MAX+1UL) /* max unsigned long */
52
53#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
54 defined(_NETBSD_SOURCE)
55#define LLONG_MIN (-__LONG_LONG_MAX__-1LL) /* min signed long long */
56#define LLONG_MAX __LONG_LONG_MAX__ /* max signed long long */
57#define ULLONG_MAX (2ULL*LLONG_MAX+1ULL) /* max unsigned long long */
58#endif
59
60#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
61 defined(_NETBSD_SOURCE)
62#define SSIZE_MAX LONG_MAX /* max value for a ssize_t */
63
64#if defined(_NETBSD_SOURCE)
65#define SSIZE_MIN LONG_MIN /* min value for a ssize_t */
66#define SIZE_T_MAX ULONG_MAX /* max value for a size_t */
67
68#define UQUAD_MAX ULLONG_MAX /* max unsigned quad */
69#define QUAD_MAX LLONG_MAX /* max signed quad */
70#define QUAD_MIN LLONG_MIN /* min signed quad */
71
72#endif /* _NETBSD_SOURCE */
73#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
74
75#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
76#define LONG_BIT (__SIZEOF_LONG__ * 8)
77#define WORD_BIT (__SIZEOF_INT__ * 8)
78
79#define DBL_DIG __DBL_DIG__
80#define DBL_MAX __DBL_MAX__
81#define DBL_MIN __DBL_MIN__
82
83#define FLT_DIG __FLT_DIG__
84#define FLT_MAX __FLT_MAX__
85#define FLT_MIN __FLT_MIN__
86
87#ifdef __LDBL_DIG__
88#define LDBL_DIG __LDBL_DIG__
89#define LDBL_MAX __LDBL_MAX__
90#define LDBL_MIN __LDBL_MIN__
91#endif
92
93#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
94
95#endif /* _SYS_COMMON_LIMITS_H_ */