[331] | 1 | #ifndef _LIMITS_H
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| 2 | #define _LIMITS_H
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| 3 |
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| 4 | #include <features.h>
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| 5 |
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| 6 | /* Most limits are system-specific */
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| 7 |
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| 8 | #include <bits/limits.h>
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| 9 |
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| 10 | /* Support signed or unsigned plain-char */
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| 11 |
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| 12 | #if '\0'-1 > 0
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| 13 | #define CHAR_MIN 0
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| 14 | #define CHAR_MAX 255
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| 15 | #else
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| 16 | #define CHAR_MIN (-128)
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| 17 | #define CHAR_MAX 127
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| 18 | #endif
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| 19 |
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| 20 | /* Some universal constants... */
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| 21 |
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| 22 | #define CHAR_BIT 8
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| 23 | #define SCHAR_MIN (-128)
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| 24 | #define SCHAR_MAX 127
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| 25 | #define UCHAR_MAX 255
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| 26 | #define SHRT_MIN (-1-0x7fff)
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| 27 | #define SHRT_MAX 0x7fff
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| 28 | #define USHRT_MAX 0xffff
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| 29 | #define INT_MIN (-1-0x7fffffff)
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| 30 | #define INT_MAX 0x7fffffff
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| 31 | #define UINT_MAX 0xffffffffU
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| 32 | #define LONG_MIN (-LONG_MAX-1)
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| 33 | #define ULONG_MAX (2UL*LONG_MAX+1)
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| 34 | #define LLONG_MIN (-LLONG_MAX-1)
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| 35 | #define ULLONG_MAX (2ULL*LLONG_MAX+1)
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| 36 |
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| 37 | #define MB_LEN_MAX 4
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| 38 |
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| 39 | #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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| 40 | || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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| 41 |
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| 42 | #define PIPE_BUF 4096
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| 43 | #ifdef PAGE_SIZE
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| 44 | #define PAGESIZE PAGE_SIZE
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| 45 | #endif
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| 46 | #define FILESIZEBITS 64
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| 47 | #define NAME_MAX 255
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| 48 | #define SYMLINK_MAX 255
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| 49 | #define PATH_MAX 4096
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| 50 | #define NZERO 20
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| 51 | #define NGROUPS_MAX 32
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| 52 | #define ARG_MAX 131072
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| 53 | #define IOV_MAX 1024
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| 54 | #define SYMLOOP_MAX 40
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| 55 | #define WORD_BIT 32
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| 56 | #define SSIZE_MAX LONG_MAX
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| 57 | #define TZNAME_MAX 6
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| 58 | #define TTY_NAME_MAX 32
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| 59 | #define HOST_NAME_MAX 255
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| 60 |
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| 61 | /* Implementation choices... */
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| 62 |
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| 63 | #define PTHREAD_KEYS_MAX 128
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| 64 | #define PTHREAD_STACK_MIN 2048
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| 65 | #define PTHREAD_DESTRUCTOR_ITERATIONS 4
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| 66 | #define SEM_VALUE_MAX 0x7fffffff
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| 67 | #define SEM_NSEMS_MAX 256
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| 68 | #define DELAYTIMER_MAX 0x7fffffff
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| 69 | #define MQ_PRIO_MAX 32768
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| 70 | #define LOGIN_NAME_MAX 256
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| 71 |
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| 72 | /* Arbitrary numbers... */
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| 73 |
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| 74 | #define BC_BASE_MAX 99
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| 75 | #define BC_DIM_MAX 2048
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| 76 | #define BC_SCALE_MAX 99
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| 77 | #define BC_STRING_MAX 1000
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| 78 | #define CHARCLASS_NAME_MAX 14
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| 79 | #define COLL_WEIGHTS_MAX 2
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| 80 | #define EXPR_NEST_MAX 32
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| 81 | #define LINE_MAX 4096
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| 82 | #define RE_DUP_MAX 255
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| 83 |
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| 84 | #define NL_ARGMAX 9
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| 85 | #define NL_LANGMAX 32
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| 86 | #define NL_MSGMAX 32767
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| 87 | #define NL_SETMAX 255
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| 88 | #define NL_TEXTMAX 2048
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| 89 |
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| 90 | #endif
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| 91 |
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| 92 | #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
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| 93 | || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
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| 94 |
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| 95 | #define NL_NMAX 16
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| 96 |
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| 97 | #endif
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| 98 |
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| 99 | /* POSIX/SUS requirements follow. These numbers come directly
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| 100 | * from SUS and have nothing to do with the host system. */
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| 101 |
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| 102 | #define _POSIX_AIO_LISTIO_MAX 2
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| 103 | #define _POSIX_AIO_MAX 1
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| 104 | #define _POSIX_ARG_MAX 4096
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| 105 | #define _POSIX_CHILD_MAX 25
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| 106 | #define _POSIX_CLOCKRES_MIN 20000000
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| 107 | #define _POSIX_DELAYTIMER_MAX 32
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| 108 | #define _POSIX_HOST_NAME_MAX 255
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| 109 | #define _POSIX_LINK_MAX 8
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| 110 | #define _POSIX_LOGIN_NAME_MAX 9
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| 111 | #define _POSIX_MAX_CANON 255
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| 112 | #define _POSIX_MAX_INPUT 255
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| 113 | #define _POSIX_MQ_OPEN_MAX 8
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| 114 | #define _POSIX_MQ_PRIO_MAX 32
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| 115 | #define _POSIX_NAME_MAX 14
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| 116 | #define _POSIX_NGROUPS_MAX 8
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| 117 | #define _POSIX_OPEN_MAX 20
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| 118 | #define _POSIX_PATH_MAX 256
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| 119 | #define _POSIX_PIPE_BUF 512
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| 120 | #define _POSIX_RE_DUP_MAX 255
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| 121 | #define _POSIX_RTSIG_MAX 8
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| 122 | #define _POSIX_SEM_NSEMS_MAX 256
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| 123 | #define _POSIX_SEM_VALUE_MAX 32767
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| 124 | #define _POSIX_SIGQUEUE_MAX 32
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| 125 | #define _POSIX_SSIZE_MAX 32767
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| 126 | #define _POSIX_STREAM_MAX 8
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| 127 | #define _POSIX_SS_REPL_MAX 4
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| 128 | #define _POSIX_SYMLINK_MAX 255
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| 129 | #define _POSIX_SYMLOOP_MAX 8
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| 130 | #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
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| 131 | #define _POSIX_THREAD_KEYS_MAX 128
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| 132 | #define _POSIX_THREAD_THREADS_MAX 64
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| 133 | #define _POSIX_TIMER_MAX 32
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| 134 | #define _POSIX_TRACE_EVENT_NAME_MAX 30
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| 135 | #define _POSIX_TRACE_NAME_MAX 8
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| 136 | #define _POSIX_TRACE_SYS_MAX 8
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| 137 | #define _POSIX_TRACE_USER_EVENT_MAX 32
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| 138 | #define _POSIX_TTY_NAME_MAX 9
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| 139 | #define _POSIX_TZNAME_MAX 6
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| 140 | #define _POSIX2_BC_BASE_MAX 99
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| 141 | #define _POSIX2_BC_DIM_MAX 2048
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| 142 | #define _POSIX2_BC_SCALE_MAX 99
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| 143 | #define _POSIX2_BC_STRING_MAX 1000
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| 144 | #define _POSIX2_CHARCLASS_NAME_MAX 14
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| 145 | #define _POSIX2_COLL_WEIGHTS_MAX 2
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| 146 | #define _POSIX2_EXPR_NEST_MAX 32
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| 147 | #define _POSIX2_LINE_MAX 2048
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| 148 | #define _POSIX2_RE_DUP_MAX 255
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| 149 |
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| 150 | #define _XOPEN_IOV_MAX 16
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| 151 | #define _XOPEN_NAME_MAX 255
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| 152 | #define _XOPEN_PATH_MAX 1024
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| 153 |
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| 154 | #endif
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