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48308c26 | 1 | /* |
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2 | * Copyright (c) 1988, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
48308c26 | 4 | * |
b702c21d | 5 | * %sccs.include.redist.c% |
48308c26 | 6 | * |
91f60d11 | 7 | * @(#)limits.h 8.4 (Berkeley) %G% |
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8 | */ |
9 | ||
10 | #define CHAR_BIT 8 /* number of bits in a char */ | |
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11 | #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ |
12 | ||
48308c26 | 13 | |
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14 | #define CLK_TCK 60 /* ticks per second */ |
15 | ||
16 | /* | |
17 | * According to ANSI (section 2.2.4.2), the values below must be usable by | |
18 | * #if preprocessing directives. Additionally, the expression must have the | |
19 | * same type as would an expression that is an object of the corresponding | |
20 | * type converted according to the integral promotions. The subtraction for | |
21 | * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an | |
22 | * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). | |
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23 | * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values |
24 | * are written as hex so that GCC will be quiet about large integer constants. | |
3f05951f | 25 | */ |
81940c41 | 26 | #define SCHAR_MAX 127 /* min value for a signed char */ |
80d1623d | 27 | #define SCHAR_MIN (-128) /* max value for a signed char */ |
48308c26 | 28 | |
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29 | #define UCHAR_MAX 255 /* max value for an unsigned char */ |
30 | #define CHAR_MAX 127 /* max value for a char */ | |
80d1623d | 31 | #define CHAR_MIN (-128) /* min value for a char */ |
48308c26 | 32 | |
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33 | #define USHRT_MAX 65535 /* max value for an unsigned short */ |
34 | #define SHRT_MAX 32767 /* max value for a short */ | |
80d1623d | 35 | #define SHRT_MIN (-32768) /* min value for a short */ |
48308c26 | 36 | |
96157702 | 37 | #define UINT_MAX 0xffffffff /* max value for an unsigned int */ |
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38 | #define INT_MAX 2147483647 /* max value for an int */ |
39 | #define INT_MIN (-2147483647-1) /* min value for an int */ | |
48308c26 | 40 | |
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41 | #define ULONG_MAX 0xffffffffL /* max value for an unsigned long */ |
42 | #define LONG_MAX 2147483647L /* max value for a long */ | |
43 | /* min value for a long */ | |
44 | #define LONG_MIN (-2147483647L-1L) | |
ef4fd9aa | 45 | |
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46 | #if !defined(_ANSI_SOURCE) |
47 | #define SSIZE_MAX INT_MAX /* max value for a ssize_t */ | |
48 | ||
49 | #if !defined(_POSIX_SOURCE) | |
b57e15fe | 50 | #define SIZE_T_MAX UINT_MAX /* max value for a size_t */ |
8bf748be | 51 | |
b57e15fe | 52 | /* GCC requires that quad constants be written as expressions. */ |
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53 | #define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ |
54 | /* max value for a quad_t */ | |
55 | #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) | |
56 | #define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ | |
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57 | |
58 | #endif /* !_POSIX_SOURCE */ | |
59 | #endif /* !_ANSI_SOURCE */ |