/* $OpenBSD: limits.h,v 1.4 2000/07/31 20:06:04 millert Exp $ */ /* $NetBSD: limits.h,v 1.8 1995/03/28 18:19:16 jtc Exp $ */ /* * Copyright (c) 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)limits.h 8.3 (Berkeley) 1/4/94 */ #ifndef _MACHINE_LIMITS_H_ #define _MACHINE_LIMITS_H_ #define CHAR_BIT 8 /* number of bits in a char */ #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ #ifdef _KERNEL #define CLK_TCK 100 /* ticks per second */ #endif /* * According to ANSI (section 2.2.4.2), the values below must be usable by * #if preprocessing directives. Additionally, the expression must have the * same type as would an expression that is an object of the corresponding * type converted according to the integral promotions. The subtraction for * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values * are written as hex so that GCC will be quiet about large integer constants. */ #define SCHAR_MAX 127 /* min value for a signed char */ #define SCHAR_MIN (-128) /* max value for a signed char */ #define UCHAR_MAX 255 /* max value for an unsigned char */ #define CHAR_MAX 127 /* max value for a char */ #define CHAR_MIN (-128) /* min value for a char */ #define USHRT_MAX 65535 /* max value for an unsigned short */ #define SHRT_MAX 32767 /* max value for a short */ #define SHRT_MIN (-32768) /* min value for a short */ #define UINT_MAX 0xffffffff /* max value for an unsigned int */ #define INT_MAX 2147483647 /* max value for an int */ #define INT_MIN (-2147483647-1) /* min value for an int */ #define ULONG_MAX 0xffffffff /* max value for an unsigned long */ #define LONG_MAX 2147483647 /* max value for a long */ #define LONG_MIN (-2147483647-1) /* min value for a long */ #if !defined(_ANSI_SOURCE) #define SSIZE_MAX INT_MAX /* max value for a ssize_t */ #if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE) #define SIZE_T_MAX UINT_MAX /* max value for a size_t */ #define UID_MAX UINT_MAX /* max value for a uid_t */ #define GID_MAX UINT_MAX /* max value for a gid_t */ /* GCC requires that quad constants be written as expressions. */ #define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ /* max value for a quad_t */ #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) #define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ #define ULLONG_MAX (UQUAD_MAX) /* max value for unsigned long long */ #define LLONG_MAX (QUAD_MAX) /* max value for a signed long long */ #define LLONG_MIN (QUAD_MIN) /* min value for a signed long long */ #endif /* !_POSIX_SOURCE && !_XOPEN_SOURCE */ #endif /* !_ANSI_SOURCE */ #if (!defined(_ANSI_SOURCE)&&!defined(_POSIX_SOURCE)) || defined(_XOPEN_SOURCE) #define LONG_BIT 32 #define WORD_BIT 32 #define DBL_DIG 15 #define DBL_MAX 1.797693134862316E+308 #define DBL_MIN 2.225073858507201E-308 #define FLT_DIG 6 #define FLT_MAX 3.40282347E+38F #define FLT_MIN 1.17549435E-38F #endif #endif /* _MACHINE_LIMITS_H_ */