169217Smckusick /* 269217Smckusick * Copyright (c) 1988, 1993 369217Smckusick * The Regents of the University of California. All rights reserved. 469217Smckusick * 569217Smckusick * %sccs.include.redist.c% 669217Smckusick * 7*69218Smckusick * @(#)limits.h 8.2 (Berkeley) 05/04/95 869217Smckusick */ 969217Smckusick 1069217Smckusick #define CHAR_BIT 8 /* number of bits in a char */ 1169217Smckusick #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 1269217Smckusick 1369217Smckusick 14*69218Smckusick #define CLK_TCK 64 /* ticks per second */ 1569217Smckusick 1669217Smckusick /* 1769217Smckusick * According to ANSI (section 2.2.4.2), the values below must be usable by 1869217Smckusick * #if preprocessing directives. Additionally, the expression must have the 1969217Smckusick * same type as would an expression that is an object of the corresponding 2069217Smckusick * type converted according to the integral promotions. The subtraction for 2169217Smckusick * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 2269217Smckusick * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 2369217Smckusick * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 2469217Smckusick * are written as hex so that GCC will be quiet about large integer constants. 2569217Smckusick */ 2669217Smckusick #define SCHAR_MAX 127 /* min value for a signed char */ 2769217Smckusick #define SCHAR_MIN (-128) /* max value for a signed char */ 2869217Smckusick 2969217Smckusick #define UCHAR_MAX 255 /* max value for an unsigned char */ 3069217Smckusick #define CHAR_MAX 127 /* max value for a char */ 3169217Smckusick #define CHAR_MIN (-128) /* min value for a char */ 3269217Smckusick 3369217Smckusick #define USHRT_MAX 65535 /* max value for an unsigned short */ 3469217Smckusick #define SHRT_MAX 32767 /* max value for a short */ 3569217Smckusick #define SHRT_MIN (-32768) /* min value for a short */ 3669217Smckusick 3769217Smckusick #define UINT_MAX 0xffffffff /* max value for an unsigned int */ 3869217Smckusick #define INT_MAX 2147483647 /* max value for an int */ 3969217Smckusick #define INT_MIN (-2147483647-1) /* min value for an int */ 4069217Smckusick 4169217Smckusick #define ULONG_MAX 0xffffffffL /* max value for an unsigned long */ 4269217Smckusick #define LONG_MAX 2147483647L /* max value for a long */ 4369217Smckusick /* min value for a long */ 4469217Smckusick #define LONG_MIN (-2147483647L-1L) 4569217Smckusick 4669217Smckusick #if !defined(_ANSI_SOURCE) 4769217Smckusick #define SSIZE_MAX INT_MAX /* max value for a ssize_t */ 4869217Smckusick 4969217Smckusick #if !defined(_POSIX_SOURCE) 5069217Smckusick #define SIZE_T_MAX UINT_MAX /* max value for a size_t */ 5169217Smckusick 5269217Smckusick /* GCC requires that quad constants be written as expressions. */ 5369217Smckusick #define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ 5469217Smckusick /* max value for a quad_t */ 5569217Smckusick #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) 5669217Smckusick #define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ 5769217Smckusick 5869217Smckusick #endif /* !_POSIX_SOURCE */ 5969217Smckusick #endif /* !_ANSI_SOURCE */ 60