| | 1 | /* |
| | 2 | * Copyright (c) 1988, 1993 |
| | 3 | * The Regents of the University of California. All rights reserved. |
| | 4 | * |
| | 5 | * %sccs.include.redist.c% |
| | 6 | * |
| | 7 | * @(#)limits.h 8.1 (Berkeley) %G% |
| | 8 | */ |
| | 9 | |
| | 10 | #define CHAR_BIT 8 /* number of bits in a char */ |
| | 11 | #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ |
| | 12 | |
| | 13 | |
| | 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). |
| | 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. |
| | 25 | */ |
| | 26 | #define SCHAR_MAX 127 /* min value for a signed char */ |
| | 27 | #define SCHAR_MIN (-128) /* max value for a signed char */ |
| | 28 | |
| | 29 | #define UCHAR_MAX 255 /* max value for an unsigned char */ |
| | 30 | #define CHAR_MAX 127 /* max value for a char */ |
| | 31 | #define CHAR_MIN (-128) /* min value for a char */ |
| | 32 | |
| | 33 | #define USHRT_MAX 65535 /* max value for an unsigned short */ |
| | 34 | #define SHRT_MAX 32767 /* max value for a short */ |
| | 35 | #define SHRT_MIN (-32768) /* min value for a short */ |
| | 36 | |
| | 37 | #define UINT_MAX 0xffffffff /* max value for an unsigned int */ |
| | 38 | #define INT_MAX 2147483647 /* max value for an int */ |
| | 39 | #define INT_MIN (-2147483647-1) /* min value for an int */ |
| | 40 | |
| | 41 | #define ULONG_MAX 0xffffffff /* max value for an unsigned long */ |
| | 42 | #define LONG_MAX 2147483647 /* max value for a long */ |
| | 43 | #define LONG_MIN (-2147483647-1) /* min value for a long */ |
| | 44 | |
| | 45 | /* Maximum/minimum values for types from <machine/include/ansi.h>. */ |
| | 46 | #ifndef _ANSI_SOURCE |
| | 47 | |
| | 48 | /* Quad constants must be written as expressions; #define GCC_ME_HARDER. */ |
| | 49 | #define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ |
| | 50 | /* max value for a quad_t */ |
| | 51 | #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) |
| | 52 | #define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ |
| | 53 | |
| | 54 | #define SIZE_T_MAX UINT_MAX |
| | 55 | #endif |
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