158 lines
6 KiB
C
158 lines
6 KiB
C
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/***
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*limits.h - implementation dependent values
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Contains defines for a number of implementation dependent values
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* which are commonly used in C programs.
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* [ANSI]
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*
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* [Public]
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*
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*Revision History:
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* 06-03-87 JMB Added support for unsigned char max values
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* 08-19-88 GJF Revised to also support the 386
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* 04-28-89 SKS Put parentheses around negative constants
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* 08-17-89 GJF Cleanup, now specific to 386
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* 10-30-89 GJF Fixed copyright
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* 11-15-89 KRS Add MB_LEN_MAX, fix CHAR_MIN/MAX, order like ANSI spec.
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* 03-01-90 GJF Added #ifndef _INC_LIMITS stuff
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* 02-21-91 KRS Change MB_LEN_MAX to 2 for C 7.00.
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* 03-30-92 DJM POSIX support.
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* 08-22-92 SRW Fix value of _POSIX_ARG_MAX
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* 12-14-92 SRW Fix value of _POSIX_ARG_MAX again
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* 12-14-92 SRW Back merge MattBr's changes from 10/29/92
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* 01-15-93 CFW Added __c_lconvinit dummy variable.
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* 01-28-93 SRW MAke PATH_MAX for Posix right for Posix
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* 02-01-93 CFW Removed __c_lconvinit vars to locale.h.
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* 03-10-93 MJB More fixes for Posix.
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* 04-07-93 SKS Fix copyright
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* 04-20-93 GJF Changed SCHAR_MIN, SHRT_MIN, INT_MIN, LONG_MIN
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* 04-21-93 GJF By directive of JonM, backed out prior change.
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* 04-26-93 GJF By directive of JonM, restored change.
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* 02-01-94 GJF Added type suffixes to LONG_MAX, LONG_MIN and
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* ULONG_MAX. Added constants for sized integer types.
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* 02-23-94 CFW Add u suffixes.
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* 02-11-95 CFW Add _CRTBLD to avoid users getting wrong headers.
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* 02-14-95 CFW Clean up Mac merge.
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* 12-14-95 JWM Add "#pragma once".
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* 01-01-96 BWT Define LINK_MAX for POSIX.
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* 02-24-97 GJF Detab-ed.
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* 05-17-99 PML Remove all Macintosh support.
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* 12-16-99 GB Updated MB_LEN_MAX
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*
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****/
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#if _MSC_VER > 1000 /*IFSTRIP=IGN*/
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#pragma once
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#endif
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#ifndef _INC_LIMITS
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#define _INC_LIMITS
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#if !defined(_WIN32)
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#error ERROR: Only Win32 target supported!
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#endif
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#ifndef _CRTBLD
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/* This version of the header files is NOT for user programs.
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* It is intended for use when building the C runtimes ONLY.
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* The version intended for public use will not have this message.
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*/
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#error ERROR: Use of C runtime library internal header file.
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#endif /* _CRTBLD */
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#define CHAR_BIT 8 /* number of bits in a char */
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#define SCHAR_MIN (-128) /* minimum signed char value */
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#define SCHAR_MAX 127 /* maximum signed char value */
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#define UCHAR_MAX 0xff /* maximum unsigned char value */
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#ifndef _CHAR_UNSIGNED
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#define CHAR_MIN SCHAR_MIN /* mimimum char value */
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#define CHAR_MAX SCHAR_MAX /* maximum char value */
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#else
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#define CHAR_MIN 0
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#define CHAR_MAX UCHAR_MAX
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#endif /* _CHAR_UNSIGNED */
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#define MB_LEN_MAX 5 /* max. # bytes in multibyte char */
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#define SHRT_MIN (-32768) /* minimum (signed) short value */
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#define SHRT_MAX 32767 /* maximum (signed) short value */
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#define USHRT_MAX 0xffff /* maximum unsigned short value */
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#define INT_MIN (-2147483647 - 1) /* minimum (signed) int value */
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#define INT_MAX 2147483647 /* maximum (signed) int value */
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#define UINT_MAX 0xffffffff /* maximum unsigned int value */
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#define LONG_MIN (-2147483647L - 1) /* minimum (signed) long value */
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#define LONG_MAX 2147483647L /* maximum (signed) long value */
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#define ULONG_MAX 0xffffffffUL /* maximum unsigned long value */
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#if _INTEGRAL_MAX_BITS >= 8 /*IFSTRIP=IGN*/
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#define _I8_MIN (-127i8 - 1) /* minimum signed 8 bit value */
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#define _I8_MAX 127i8 /* maximum signed 8 bit value */
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#define _UI8_MAX 0xffui8 /* maximum unsigned 8 bit value */
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#endif
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#if _INTEGRAL_MAX_BITS >= 16 /*IFSTRIP=IGN*/
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#define _I16_MIN (-32767i16 - 1) /* minimum signed 16 bit value */
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#define _I16_MAX 32767i16 /* maximum signed 16 bit value */
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#define _UI16_MAX 0xffffui16 /* maximum unsigned 16 bit value */
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#endif
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#if _INTEGRAL_MAX_BITS >= 32 /*IFSTRIP=IGN*/
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#define _I32_MIN (-2147483647i32 - 1) /* minimum signed 32 bit value */
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#define _I32_MAX 2147483647i32 /* maximum signed 32 bit value */
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#define _UI32_MAX 0xffffffffui32 /* maximum unsigned 32 bit value */
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#endif
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#if _INTEGRAL_MAX_BITS >= 64 /*IFSTRIP=IGN*/
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/* minimum signed 64 bit value */
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#define _I64_MIN (-9223372036854775807i64 - 1)
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/* maximum signed 64 bit value */
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#define _I64_MAX 9223372036854775807i64
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/* maximum unsigned 64 bit value */
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#define _UI64_MAX 0xffffffffffffffffui64
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#endif
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#if _INTEGRAL_MAX_BITS >= 128 /*IFSTRIP=IGN*/
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/* minimum signed 128 bit value */
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#define _I128_MIN (-170141183460469231731687303715884105727i128 - 1)
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/* maximum signed 128 bit value */
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#define _I128_MAX 170141183460469231731687303715884105727i128
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/* maximum unsigned 128 bit value */
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#define _UI128_MAX 0xffffffffffffffffffffffffffffffffui128
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#endif
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#ifdef _POSIX_
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#define _POSIX_ARG_MAX 4096
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#define _POSIX_CHILD_MAX 6
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#define _POSIX_LINK_MAX 8
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#define _POSIX_MAX_CANON 255
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#define _POSIX_MAX_INPUT 255
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#define _POSIX_NAME_MAX 14
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#define _POSIX_NGROUPS_MAX 0
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#define _POSIX_OPEN_MAX 16
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#define _POSIX_PATH_MAX 255
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#define _POSIX_PIPE_BUF 512
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#define _POSIX_SSIZE_MAX 32767
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#define _POSIX_STREAM_MAX 8
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#define _POSIX_TZNAME_MAX 3
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#define ARG_MAX 14500 /* 16k heap, minus overhead */
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#define LINK_MAX 1024
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#define MAX_CANON _POSIX_MAX_CANON
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#define MAX_INPUT _POSIX_MAX_INPUT
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#define NAME_MAX 255
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#define NGROUPS_MAX 16
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#define OPEN_MAX 32
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#define PATH_MAX 512
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#define PIPE_BUF _POSIX_PIPE_BUF
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#define SSIZE_MAX _POSIX_SSIZE_MAX
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#define STREAM_MAX 20
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#define TZNAME_MAX 10
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#endif /* POSIX */
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#endif /* _INC_LIMITS */
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