整数型の大きさ <limits.h>
整数型の大きさを表すマクロの定義。
・CHAR_BIT - char 型を構成するビット数（≧8）
・MB_LEN_MAX - 処理系がサポートするマルチバイト文字の最大バイト数
・CHAR_MAX - char 型の最大値。 SCHAR_MAX または UCHAR_MAX と同じ
・CHAR_MIN - char 型の最小値。 SCHAR_MIN または 0 と同じ
・SCHAR_MAX - signed char 型の最大値（≧127）
・SCHAR_MIN - signed char 型の最小値（≦-127）
・UCHAR_MAX - unsigned char 型の最大値（≧255）
・SHRT_MAX - short 型の最大値（≧32767）
・SHRT_MIN - short 型の最小値（≦-32767）
・USHRT_MAX - unsigned short 型の最大値（≧65535）
・INT_MAX - int 型の最大値（≧32767）
・INT_MIN - int 型の最小値（≦-32767）
・UINT_MAX - unsigned int 型の最大値（≧65535）
・LONG_MAX - long 型の最大値（≧2147483647）
・LONG_MIN - long 型の最小値（≦-2147483647）
・ULONG_MAX - unsigned long 型の最大値（≧4294967295）
標準Cライブラリ - Wikipedia
/usr/include/limits.h
/*
* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/* $NetBSD: limits.h,v 1.8 1996/10/21 05:10:50 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 8.2 (Berkeley) 1/4/94
*/
#ifndef _LIMITS_H_
#define _LIMITS_H_
#include <sys/cdefs.h>
#include <machine/limits.h>
#include <sys/syslimits.h>
#if !defined(_ANSI_SOURCE)
#define _POSIX_AIO_LISTIO_MAX 2
#define _POSIX_AIO_MAX 1
#define _POSIX_DELAYTIMER_MAX 32
#define _POSIX_HOST_NAME_MAX 255
#define _POSIX_LOGIN_NAME_MAX 9
#define _POSIX_MQ_OPEN_MAX 8
#define _POSIX_MQ_PRIO_MAX 32
#define _POSIX_ARG_MAX 4096
#define _POSIX_CHILD_MAX 25
#define _POSIX_LINK_MAX 8
#define _POSIX_MAX_CANON 255
#define _POSIX_MAX_INPUT 255
#define _POSIX_NAME_MAX 14
#define _POSIX_NGROUPS_MAX 8
#define _POSIX_OPEN_MAX 20
#define _POSIX_PATH_MAX 256
#define _POSIX_PIPE_BUF 512
#define _POSIX_SSIZE_MAX 32767
#define _POSIX_STREAM_MAX 8
#define _POSIX_TZNAME_MAX 6
#define _POSIX_RE_DUP_MAX 255
#define _POSIX_RTSIG_MAX 8
#define _POSIX_SEM_NSEMS_MAX 256
#define _POSIX_SEM_VALUE_MAX 32767
#define _POSIX_SIGQUEUE_MAX 32
#define _POSIX_SS_REPL_MAX 4
#define _POSIX_SYMLINK_MAX 255
#define _POSIX_SYMLOOP_MAX 8
#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
#define _POSIX_THREAD_KEYS_MAX 128
#define _POSIX_THREAD_THREADS_MAX 64
#define _POSIX_TIMER_MAX 32
#define _POSIX_TRACE_EVENT_NAME_MAX 30
#define _POSIX_TRACE_NAME_MAX 8
#define _POSIX_TRACE_SYS_MAX 8
#define _POSIX_TRACE_USER_EVENT_MAX 32
#define _POSIX_TTY_NAME_MAX 9
#define _POSIX2_BC_BASE_MAX 99
#define _POSIX2_BC_DIM_MAX 2048
#define _POSIX2_BC_SCALE_MAX 99
#define _POSIX2_BC_STRING_MAX 1000
#define _POSIX2_CHARCLASS_NAME_MAX 14
#define _POSIX2_COLL_WEIGHTS_MAX 2
#define _POSIX2_EQUIV_CLASS_MAX 2
#define _POSIX2_EXPR_NEST_MAX 32
#define _POSIX2_LINE_MAX 2048
#define _POSIX2_RE_DUP_MAX 255
#define PTHREAD_STACK_MIN 8192
#define PTHREAD_DESTRUCTOR_ITERATIONS 4
#define PTHREAD_KEYS_MAX 512
#if (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
#define PASS_MAX 128
#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
#define NL_ARGMAX 9
#define NL_LANGMAX 14
#define NL_MSGMAX 32767
#define NL_NMAX 1
#define NL_SETMAX 255
#define NL_TEXTMAX 2048
#define _XOPEN_IOV_MAX 16
#define IOV_MAX 1024
#define _XOPEN_NAME_MAX 255
#define _XOPEN_PATH_MAX 1024
#endif /* _ANSI_SOURCE */
/* NZERO to be defined here. TBD. See also sys/param.h */
#endif /* !_LIMITS_H_ */
/usr/include/machine/limits.h
/* This is the `system' limits.h, independent of any particular
compiler. GCC provides its own limits.h which can be found in
/usr/lib/gcc, although it is not very informative.
This file is public domain. */
#if defined (__ppc__) || defined (__ppc64__)
#include <ppc/limits.h>
#elif defined (__i386__) || defined(__x86_64__)
#include <i386/limits.h>
#elif defined (__arm__)
#include <arm/limits.h>
#else
#error architecture not supported
#endif
/usr/include/i386/limits.h
/*
* 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 _I386_LIMITS_H_
#define _I386_LIMITS_H_
#include <sys/cdefs.h>
#include <i386/_limits.h>
#define CHAR_BIT 8 /* number of bits in a char */
#define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */
#if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
#define CLK_TCK __DARWIN_CLK_TCK /* ticks per second */
#endif /* !_ANSI_SOURCE && (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
/*
* 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 */
#ifdef __LP64__
#define ULONG_MAX 0xffffffffffffffffUL /* max unsigned long */
#define LONG_MAX 0x7fffffffffffffffL /* max signed long */
#define LONG_MIN (-0x7fffffffffffffffL-1) /* min signed long */
#else /* !__LP64__ */
#define ULONG_MAX 0xffffffffUL /* max unsigned long */
#define LONG_MAX 2147483647L /* max signed long */
#define LONG_MIN (-2147483647L-1) /* min signed long */
#endif /* __LP64__ */
#define ULLONG_MAX 0xffffffffffffffffULL /* max unsigned long long */
#define LLONG_MAX 0x7fffffffffffffffLL /* max signed long long */
#define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min signed long long */
#if !defined(_ANSI_SOURCE)
#ifdef __LP64__
#define LONG_BIT 64
#else /* !__LP64__ */
#define LONG_BIT 32
#endif /* __LP64__ */
#define SSIZE_MAX LONG_MAX /* max value for a ssize_t */
#define WORD_BIT 32
#if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || defined(_DARWIN_C_SOURCE)
#define SIZE_T_MAX ULONG_MAX /* max value for a size_t */
#define UQUAD_MAX ULLONG_MAX
#define QUAD_MAX LLONG_MAX
#define QUAD_MIN LLONG_MIN
#endif /* (!_POSIX_C_SOURCE && !_XOPEN_SOURCE) || _DARWIN_C_SOURCE */
#endif /* !_ANSI_SOURCE */
#endif /* _I386_LIMITS_H_ */
今回の環境
OS: Mac OS X Snow Leopard
$ uname -mrsv
Darwin 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386
$ gcc -v
Using built-in specs.
Target: i686-apple-darwin10
Configured with: /var/tmp/gcc/gcc-5666.3~6/src/configure --disable-checking --enable-werror --prefix=/usr --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin10 --program-prefix=i686-apple-darwin10- --host=x86_64-apple-darwin10 --target=i686-apple-darwin10 --with-gxx-include-dir=/include/c++/4.2.1
Thread model: posix
gcc version 4.2.1 (Apple Inc. build 5666) (dot 3)
tags: c
Posted by NI-Lab. (@nilab)
