1 /*
2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)limits.h 8.3 (Berkeley) 1/4/94
34 * $FreeBSD: releng/5.0/sys/i386/include/limits.h 100882 2002-07-29 17:41:23Z mike $
35 */
36
37 #ifndef _MACHINE_LIMITS_H_
38 #define _MACHINE_LIMITS_H_
39
40 #define CHAR_BIT 8 /* number of bits in a char */
41 #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */
42
43 /*
44 * According to ANSI (section 2.2.4.2), the values below must be usable by
45 * #if preprocessing directives. Additionally, the expression must have the
46 * same type as would an expression that is an object of the corresponding
47 * type converted according to the integral promotions. The subtraction for
48 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
49 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
50 * These numbers are for the default configuration of gcc. They work for
51 * some other compilers as well, but this should not be depended on.
52 */
53 #define SCHAR_MAX 0x7f /* max value for a signed char */
54 #define SCHAR_MIN (-0x7f - 1) /* min value for a signed char */
55
56 #define UCHAR_MAX 0xff /* max value for an unsigned char */
57
58 #ifdef __CHAR_UNSIGNED__
59 #define CHAR_MAX UCHAR_MAX /* max value for a char */
60 #define CHAR_MIN 0 /* min value for a char */
61 #else
62 #define CHAR_MAX SCHAR_MAX /* max value for a char */
63 #define CHAR_MIN SCHAR_MIN /* min value for a char */
64 #endif
65
66 #define USHRT_MAX 0xffff /* max value for an unsigned short */
67 #define SHRT_MAX 0x7fff /* max value for a short */
68 #define SHRT_MIN (-0x7fff - 1) /* min value for a short */
69
70 #define UINT_MAX 0xffffffffU /* max value for an unsigned int */
71 #define INT_MAX 0x7fffffff /* max value for an int */
72 #define INT_MIN (-0x7fffffff - 1) /* min value for an int */
73
74 /* Bad hack for gcc configured to give 64-bit longs. */
75 #ifdef _LARGE_LONG
76 #define ULONG_MAX 0xffffffffffffffffUL
77 #define LONG_MAX 0x7fffffffffffffffL
78 #define LONG_MIN (-0x7fffffffffffffffL - 1)
79 #else
80 #define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */
81 #define LONG_MAX 0x7fffffffL /* max value for a long */
82 #define LONG_MIN (-0x7fffffffL - 1) /* min value for a long */
83 #endif
84
85 /* max value for an unsigned long long */
86 #define ULLONG_MAX 0xffffffffffffffffULL
87 #define LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */
88 #define LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */
89
90 #if !defined(_ANSI_SOURCE)
91 #define SSIZE_MAX INT_MAX /* max value for a ssize_t */
92
93 #if !defined(_POSIX_SOURCE)
94 #define SIZE_T_MAX UINT_MAX /* max value for a size_t */
95
96 #define OFF_MAX LLONG_MAX /* max value for a off_t */
97 #define OFF_MIN LLONG_MIN /* min value for a off_t */
98
99 /* Quads and long longs are the same size. Ensure they stay in sync. */
100 #define UQUAD_MAX ULLONG_MAX /* max value for a uquad_t */
101 #define QUAD_MAX LLONG_MAX /* max value for a quad_t */
102 #define QUAD_MIN LLONG_MIN /* min value for a quad_t */
103 #endif /* !_POSIX_SOURCE */
104 #endif /* !_ANSI_SOURCE */
105
106 #endif /* !_MACHINE_LIMITS_H_ */
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