136797Sbostic /* 263160Sbostic * Copyright (c) 1988, 1993 363160Sbostic * The Regents of the University of California. All rights reserved. 436797Sbostic * 544541Sbostic * %sccs.include.redist.c% 636797Sbostic * 7*69075Sbostic * @(#)limits.h 8.4 (Berkeley) 04/28/95 836797Sbostic */ 936797Sbostic 1036797Sbostic #define CHAR_BIT 8 /* number of bits in a char */ 1160450Sbostic #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 1236797Sbostic 1360450Sbostic 1452899Sbostic #define CLK_TCK 60 /* ticks per second */ 1552899Sbostic 1652899Sbostic /* 1752899Sbostic * According to ANSI (section 2.2.4.2), the values below must be usable by 1852899Sbostic * #if preprocessing directives. Additionally, the expression must have the 1952899Sbostic * same type as would an expression that is an object of the corresponding 2052899Sbostic * type converted according to the integral promotions. The subtraction for 2152899Sbostic * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 2252899Sbostic * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 2359788Sbostic * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 2459788Sbostic * are written as hex so that GCC will be quiet about large integer constants. 2552899Sbostic */ 2652898Sbostic #define SCHAR_MAX 127 /* min value for a signed char */ 2760184Sbostic #define SCHAR_MIN (-128) /* max value for a signed char */ 2836797Sbostic 2952898Sbostic #define UCHAR_MAX 255 /* max value for an unsigned char */ 3052898Sbostic #define CHAR_MAX 127 /* max value for a char */ 3160184Sbostic #define CHAR_MIN (-128) /* min value for a char */ 3236797Sbostic 3352898Sbostic #define USHRT_MAX 65535 /* max value for an unsigned short */ 3452898Sbostic #define SHRT_MAX 32767 /* max value for a short */ 3560184Sbostic #define SHRT_MIN (-32768) /* min value for a short */ 3636797Sbostic 3759788Sbostic #define UINT_MAX 0xffffffff /* max value for an unsigned int */ 3852898Sbostic #define INT_MAX 2147483647 /* max value for an int */ 3952898Sbostic #define INT_MIN (-2147483647-1) /* min value for an int */ 4036797Sbostic 41*69075Sbostic #define ULONG_MAX 0xffffffffL /* max value for an unsigned long */ 42*69075Sbostic #define LONG_MAX 2147483647L /* max value for a long */ 43*69075Sbostic /* min value for a long */ 44*69075Sbostic #define LONG_MIN (-2147483647L-1L) 4554360Sbostic 4665409Sbostic #if !defined(_ANSI_SOURCE) 4765409Sbostic #define SSIZE_MAX INT_MAX /* max value for a ssize_t */ 4865409Sbostic 4965409Sbostic #if !defined(_POSIX_SOURCE) 5065407Sbostic #define SIZE_T_MAX UINT_MAX /* max value for a size_t */ 5154417Sbostic 5265407Sbostic /* GCC requires that quad constants be written as expressions. */ 5354417Sbostic #define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ 5454417Sbostic /* max value for a quad_t */ 5554417Sbostic #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) 5654417Sbostic #define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ 5765409Sbostic 5865409Sbostic #endif /* !_POSIX_SOURCE */ 5965409Sbostic #endif /* !_ANSI_SOURCE */ 60