_limits.h revision 66458
1/* $FreeBSD: head/sys/ia64/include/_limits.h 66458 2000-09-29 13:46:07Z dfr $ */ 2/* From: NetBSD: limits.h,v 1.3 1997/04/06 08:47:31 cgd Exp */ 3 4/* 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)limits.h 8.3 (Berkeley) 1/4/94 37 */ 38 39#define CHAR_BIT 8 /* number of bits in a char */ 40#define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 41 42/* 43 * According to ANSI (section 2.2.4.2), the values below must be usable by 44 * #if preprocessing directives. Additionally, the expression must have the 45 * same type as would an expression that is an object of the corresponding 46 * type converted according to the integral promotions. The subtraction for 47 * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 48 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 49 * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 50 * are written as hex so that GCC will be quiet about large integer constants. 51 */ 52#define SCHAR_MAX 0x7f /* max value for a signed char */ 53#define SCHAR_MIN (-0x7f-1) /* min value for a signed char */ 54 55#define UCHAR_MAX 0xffU /* max value for an unsigned char */ 56#define CHAR_MAX 0x7f /* max value for a char */ 57#define CHAR_MIN (-0x7f-1) /* min value for a char */ 58 59#define USHRT_MAX 0xffffU /* max value for an unsigned short */ 60#define SHRT_MAX 0x7fff /* max value for a short */ 61#define SHRT_MIN (-0x7fff-1) /* min value for a short */ 62 63#define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 64#define INT_MAX 0x7fffffff /* max value for an int */ 65#define INT_MIN (-0x7fffffff-1) /* min value for an int */ 66 67#define ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */ 68#define LONG_MAX 0x7fffffffffffffffL /* max for a long */ 69#define LONG_MIN (-0x7fffffffffffffffL-1) /* min for a long */ 70 71#if !defined(_ANSI_SOURCE) 72#define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 73 74#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE) 75#define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 76 77/* Quads and longs are the same on the alpha */ 78#define UQUAD_MAX (ULONG_MAX) /* max value for a uquad_t */ 79#define QUAD_MAX (LONG_MAX) /* max value for a quad_t */ 80#define QUAD_MIN (LONG_MIN) /* min value for a quad_t */ 81 82#endif /* !_POSIX_SOURCE && !_XOPEN_SOURCE */ 83#endif /* !_ANSI_SOURCE */ 84 85#if (!defined(_ANSI_SOURCE)&&!defined(_POSIX_SOURCE)) || defined(_XOPEN_SOURCE) 86#define LONG_BIT 64 87#define WORD_BIT 32 88 89#define DBL_DIG 15 90#define DBL_MAX 1.7976931348623157E+308 91#define DBL_MIN 2.2250738585072014E-308 92 93#define FLT_DIG 6 94#define FLT_MAX 3.40282347E+38F 95#define FLT_MIN 1.17549435E-38F 96#endif 97