limits.h revision 1.8
1/* $NetBSD: limits.h,v 1.8 2014/04/21 10:53:47 matt Exp $ */ 2 3/* 4 * Copyright (c) 1988 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)limits.h 7.2 (Berkeley) 6/28/90 32 */ 33 34#ifndef _MACHINE_LIMITS_H_ 35#define _MACHINE_LIMITS_H_ 36 37#define CHAR_BIT 8 /* number of bits in a char */ 38 39#define UCHAR_MAX 0xff /* max value for an unsigned char */ 40#define SCHAR_MAX 0x7f /* max value for a signed char */ 41#define SCHAR_MIN (-0x7f-1) /* min value for a signed char */ 42 43#define USHRT_MAX 0xffff /* max value for an unsigned short */ 44#define SHRT_MAX 0x7fff /* max value for a short */ 45#define SHRT_MIN (-0x7fff-1) /* min value for a short */ 46 47#define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 48#define INT_MAX 0x7fffffff /* max value for an int */ 49#define INT_MIN (-0x7fffffff-1) /* min value for an int */ 50 51#define ULONG_MAX 0xffffffffffffffffUL /* max value for an unsigned long */ 52#define LONG_MAX 0x7fffffffffffffffL /* max value for a long */ 53#define LONG_MIN (-0x7fffffffffffffffL-1) /* min value for a long */ 54 55 56#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 57 defined(_NETBSD_SOURCE) 58#define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 59 60#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \ 61 defined(_NETBSD_SOURCE) 62#define ULLONG_MAX 0xffffffffffffffffULL /* max unsigned long long */ 63#define LLONG_MAX 0x7fffffffffffffffLL /* max signed long long */ 64#define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min signed long long */ 65#endif 66 67#if defined(_NETBSD_SOURCE) 68#define SSIZE_MIN LONG_MIN /* min value for a ssize_t */ 69#define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 70 71/* GCC requires that quad constants be written as expressions. */ 72#define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ 73 /* max value for a quad_t */ 74#define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) 75#define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ 76 77#endif /* _NETBSD_SOURCE */ 78#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */ 79 80#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 81#define LONG_BIT 64 82#define WORD_BIT 32 83 84#define DBL_DIG __DBL_DIG__ 85#define DBL_MAX __DBL_MAX__ 86#define DBL_MIN __DBL_MIN__ 87 88#define FLT_DIG __FLT_DIG__ 89#define FLT_MAX __FLT_MAX__ 90#define FLT_MIN __FLT_MIN__ 91#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */ 92 93#endif /* _MACHINE_LIMITS_H_ */ 94