133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
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/*
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* limits.h
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*
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* Manifest constants defining the sizes of integral types.
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*
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* $Id: limits.h,v 2499eb7464e6 2017/01/29 14:24:00 keithmarshall $
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*
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* Written by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
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* Copyright (C) 1997, 1999-2001, 2004, 2005, 2010, 2012, 2017,
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* MinGW.org Project
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice, this permission notice, and the following
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* disclaimer shall be included in all copies or substantial portions of
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* the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OF OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef _LIMITS_H
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#pragma GCC system_header
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#define _LIMITS_H
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/* All MinGW headers are required to include <_mingw.h>
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*/
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#include <_mingw.h>
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/* File system limits
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*
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* TODO (REVIEW): Are NAME_MAX and OPEN_MAX file system limits, or not?
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* Are they the same as FILENAME_MAX and FOPEN_MAX from <stdio.h>?
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*
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* NOTE: PATH_MAX is the POSIX equivalent for Microsoft's MAX_PATH; the
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* two are semantically identical, with a limit of 259 characters for the
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* path name, plus one for a terminating NUL, making a total of 260.
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*/
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#ifndef __STRICT_ANSI__
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# define PATH_MAX 260
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#endif
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/* Characteristics of the char data type.
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*
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* FIXME: Is MB_LEN_MAX correct? Probably yes, for Microsoft MBCS, which
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* effectively seem to all be DBCS.
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*/
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#define CHAR_BIT 8
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#define MB_LEN_MAX 2
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#define SCHAR_MIN (-128)
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#define SCHAR_MAX 127
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#define UCHAR_MAX 255
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#if '\x80' < 0
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/* FIXME: is this safe? I think it might just be testing
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* the preprocessor, not the compiler itself.
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*/
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# define CHAR_MIN SCHAR_MIN
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# define CHAR_MAX SCHAR_MAX
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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
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/* Maximum and minimum values for ints.
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*/
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#define INT_MAX 2147483647
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#define INT_MIN (-INT_MAX-1)
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#define UINT_MAX 0xFFFFFFFF
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/* Maximum and minimum values for shorts.
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*/
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#define SHRT_MAX 32767
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#define SHRT_MIN (-SHRT_MAX-1)
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#define USHRT_MAX 0xFFFF
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/* Maximum and minimum values for longs and unsigned longs;
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* this isn't correct for Alphas, which have 64 bit longs, but
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* that is probably no longer a concern.
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*/
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#define LONG_MAX 2147483647L
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#define LONG_MIN (-LONG_MAX-1)
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#define ULONG_MAX 0xFFFFFFFFUL
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#ifndef __STRICT_ANSI__
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/* POSIX wants this.
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*/
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#define SSIZE_MAX LONG_MAX
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#endif
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#if _ISOC99_SOURCE
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/* Implicitly defined in <_mingw.h>, (or explicitly defined by
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* the user), for C99, C++, or POSIX.1-2001; make these ISO-C99
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* macro names available.
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*/
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#define LLONG_MAX 9223372036854775807LL
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#define LLONG_MIN (-LLONG_MAX - 1)
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#define ULLONG_MAX (2ULL * LLONG_MAX + 1)
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#endif
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#if defined __GNUC__ && ! defined __STRICT_ANSI__
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/* The GNU C compiler also allows 'long long int', but we don't
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* want that capability polluting the strict ANSI namespace.
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*/
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#define LONG_LONG_MAX 9223372036854775807LL
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#define LONG_LONG_MIN (-LONG_LONG_MAX-1)
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#define ULONG_LONG_MAX (2ULL * LONG_LONG_MAX + 1)
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/* MSVC compatibility
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*/
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#define _I64_MIN LONG_LONG_MIN
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#define _I64_MAX LONG_LONG_MAX
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#define _UI64_MAX ULONG_LONG_MAX
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#endif /* __GNUC__ && !__STRICT_ANSI__ */
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#endif /* !_LIMITS_H: $RCSfile: limits.h,v $: end of file */
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