limits.h revision 1.3
1/* $NetBSD: limits.h,v 1.3 2003/04/28 23:16:19 bjh21 Exp $ */ 2 3/* $OpenBSD: limits.h,v 1.2 2000/07/31 20:06:02 millert Exp $ */ 4 5/* 6 * Copyright (c) 1992-1994, The University of Utah and 7 * the Computer Systems Laboratory at the University of Utah (CSL). 8 * All rights reserved. 9 * 10 * Permission to use, copy, modify and distribute this software is hereby 11 * granted provided that (1) source code retains these copyright, permission, 12 * and disclaimer notices, and (2) redistributions including binaries 13 * reproduce the notices in supporting documentation, and (3) all advertising 14 * materials mentioning features or use of this software display the following 15 * acknowledgement: ``This product includes software developed by the 16 * Computer Systems Laboratory at the University of Utah.'' 17 * 18 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS 19 * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF 20 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 21 * 22 * CSL requests users of this software to return to csl-dist@cs.utah.edu any 23 * improvements that they make and grant CSL redistribution rights. 24 * 25 * Utah $Hdr: limits.h 1.6 94/12/16$ 26 */ 27 28/* 29 * Copyright (c) 1988, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)limits.h 8.3 (Berkeley) 1/4/94 61 */ 62 63#include <sys/featuretest.h> 64 65#define CHAR_BIT 8 /* number of bits in a char */ 66#define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 67 68 69/* 70 * According to ANSI (section 2.2.4.2), the values below must be usable by 71 * #if preprocessing directives. Additionally, the expression must have the 72 * same type as would an expression that is an object of the corresponding 73 * type converted according to the integral promotions. The subtraction for 74 * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 75 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 76 * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 77 * are written as hex so that GCC will be quiet about large integer constants. 78 */ 79#define SCHAR_MAX 127 /* min value for a signed char */ 80#define SCHAR_MIN (-128) /* max value for a signed char */ 81 82#define UCHAR_MAX 255 /* max value for an unsigned char */ 83#define CHAR_MAX 127 /* max value for a char */ 84#define CHAR_MIN (-128) /* min value for a char */ 85 86#define USHRT_MAX 65535 /* max value for an unsigned short */ 87#define SHRT_MAX 32767 /* max value for a short */ 88#define SHRT_MIN (-32768) /* min value for a short */ 89 90#define UINT_MAX 0xffffffff /* max value for an unsigned int */ 91#define INT_MAX 2147483647 /* max value for an int */ 92#define INT_MIN (-2147483647-1) /* min value for an int */ 93 94#define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 95#define LONG_MAX 2147483647L /* max value for a long */ 96#define LONG_MIN (-2147483647-1) /* min value for a long */ 97 98#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 99 defined(_NETBSD_SOURCE) 100#define SSIZE_MAX INT_MAX /* max value for a ssize_t */ 101 102#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 103#define SIZE_T_MAX UINT_MAX /* max value for a size_t */ 104 105/* GCC requires that quad constants be written as expressions. */ 106#define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ 107 /* max value for a quad_t */ 108#define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) 109#define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ 110#define ULLONG_MAX (UQUAD_MAX) /* max value for unsigned long long */ 111#define LLONG_MAX (QUAD_MAX) /* max value for a signed long long */ 112#define LLONG_MIN (QUAD_MIN) /* min value for a signed long long */ 113 114#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */ 115 116#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */ 117 118#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 119#define LONG_BIT 32 120#define WORD_BIT 32 121 122#define DBL_DIG 15 123#define DBL_MAX 1.7976931348623157E+308 124#define DBL_MIN 2.2250738585072014E-308 125 126#define FLT_DIG 6 127#define FLT_MAX 3.40282347E+38F 128#define FLT_MIN 1.17549435E-38F 129#endif 130