| 1 | /*
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| 2 | * limits.h
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| 3 | * This file has no copyright assigned and is placed in the Public Domain.
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| 4 | * This file is a part of the mingw-runtime package.
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| 5 | * No warranty is given; refer to the file DISCLAIMER within the package.
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| 6 | *
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| 7 | * Functions for manipulating paths and directories (included from io.h)
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| 8 | * plus functions for setting the current drive.
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| 9 | *
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| 10 | * Defines constants for the sizes of integral types.
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| 11 | *
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| 12 | * NOTE: GCC should supply a version of this header and it should be safe to
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| 13 | * use that version instead of this one (maybe safer).
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| 14 | *
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| 15 | */
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| 16 |
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| 17 | #ifndef _LIMITS_H_
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| 18 | #define _LIMITS_H_
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| 19 |
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| 20 | /* All the headers include this file. */
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| 21 | #include <_mingw.h>
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| 22 |
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| 23 | /*
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| 24 | * File system limits
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| 25 | *
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| 26 | * TODO: NAME_MAX and OPEN_MAX are file system limits or not? Are they the
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| 27 | * same as FILENAME_MAX and FOPEN_MAX from stdio.h?
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| 28 | * NOTE: PATH_MAX is the POSIX equivalent for Microsoft's MAX_PATH; the two
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| 29 | * are semantically identical, with a limit of 259 characters for the
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| 30 | * path name, plus one for a terminating NUL, for a total of 260.
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| 31 | */
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| 32 | #ifndef __STRICT_ANSI__
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| 33 | # define PATH_MAX 260
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| 34 | #endif
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| 35 |
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| 36 | /*
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| 37 | * Characteristics of the char data type.
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| 38 | *
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| 39 | * TODO: Is MB_LEN_MAX correct?
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| 40 | */
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| 41 | #define CHAR_BIT 8
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| 42 | #define MB_LEN_MAX 2
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| 43 |
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| 44 | #define SCHAR_MIN (-128)
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| 45 | #define SCHAR_MAX 127
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| 46 |
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| 47 | #define UCHAR_MAX 255
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| 48 |
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| 49 | /* TODO: Is this safe? I think it might just be testing the preprocessor,
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| 50 | * not the compiler itself... */
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| 51 | #if ('\x80' < 0)
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| 52 | #define CHAR_MIN SCHAR_MIN
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| 53 | #define CHAR_MAX SCHAR_MAX
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| 54 | #else
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| 55 | #define CHAR_MIN 0
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| 56 | #define CHAR_MAX UCHAR_MAX
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| 57 | #endif
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| 58 |
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| 59 | /*
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| 60 | * Maximum and minimum values for ints.
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| 61 | */
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| 62 | #define INT_MAX 2147483647
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| 63 | #define INT_MIN (-INT_MAX-1)
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| 64 |
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| 65 | #define UINT_MAX 0xffffffff
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| 66 |
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| 67 | /*
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| 68 | * Maximum and minimum values for shorts.
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| 69 | */
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| 70 | #define SHRT_MAX 32767
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| 71 | #define SHRT_MIN (-SHRT_MAX-1)
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| 72 |
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| 73 | #define USHRT_MAX 0xffff
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| 74 |
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| 75 | /*
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| 76 | * Maximum and minimum values for longs and unsigned longs.
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| 77 | *
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| 78 | * TODO: This is not correct for Alphas, which have 64 bit longs.
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| 79 | */
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| 80 | #define LONG_MAX 2147483647L
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| 81 | #define LONG_MIN (-LONG_MAX-1)
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| 82 |
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| 83 | #define ULONG_MAX 0xffffffffUL
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| 84 |
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| 85 | #ifndef __STRICT_ANSI__
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| 86 | /* POSIX wants this. */
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| 87 | #define SSIZE_MAX LONG_MAX
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| 88 | #endif
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| 89 |
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| 90 | #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \
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| 91 | || !defined(__STRICT_ANSI__)
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| 92 | /* ISO C9x macro names */
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| 93 | #define LLONG_MAX 9223372036854775807LL
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| 94 | #define LLONG_MIN (-LLONG_MAX - 1)
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| 95 | #define ULLONG_MAX (2ULL * LLONG_MAX + 1)
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| 96 | #endif
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| 97 |
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| 98 | /*
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| 99 | * The GNU C compiler also allows 'long long int'
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| 100 | */
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| 101 | #if !defined(__STRICT_ANSI__) && defined(__GNUC__)
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| 102 |
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| 103 | #define LONG_LONG_MAX 9223372036854775807LL
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| 104 | #define LONG_LONG_MIN (-LONG_LONG_MAX-1)
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| 105 | #define ULONG_LONG_MAX (2ULL * LONG_LONG_MAX + 1)
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| 106 |
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| 107 | /* MSVC compatibility */
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| 108 | #define _I64_MIN LONG_LONG_MIN
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| 109 | #define _I64_MAX LONG_LONG_MAX
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| 110 | #define _UI64_MAX ULONG_LONG_MAX
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| 111 |
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| 112 | #endif /* Not Strict ANSI and GNU C compiler */
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| 113 |
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| 114 |
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| 115 | #endif /* not _LIMITS_H_ */
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