include/limits.h

   1 #ifndef _LIMITS_H
   2 #define _LIMITS_H
   3
   4 #include <features.h>
   5
   6 #include <bits/alltypes.h> /* __LONG_MAX */
   7
   8 /* Support signed or unsigned plain-char */
   9
  10 #if '\xff' > 0
  11 #define CHAR_MIN 0
  12 #define CHAR_MAX 255
  13 #else
  14 #define CHAR_MIN (-128)
  15 #define CHAR_MAX 127
  16 #endif
  17
  18 #define CHAR_BIT 8
  19 #define SCHAR_MIN (-128)
  20 #define SCHAR_MAX 127
  21 #define UCHAR_MAX 255
  22 #define SHRT_MIN  (-1-0x7fff)
  23 #define SHRT_MAX  0x7fff
  24 #define USHRT_MAX 0xffff
  25 #define INT_MIN  (-1-0x7fffffff)
  26 #define INT_MAX  0x7fffffff
  27 #define UINT_MAX 0xffffffffU
  28 #define LONG_MIN (-LONG_MAX-1)
  29 #define LONG_MAX __LONG_MAX
  30 #define ULONG_MAX (2UL*LONG_MAX+1)
  31 #define LLONG_MIN (-LLONG_MAX-1)
  32 #define LLONG_MAX  0x7fffffffffffffffLL
  33 #define ULLONG_MAX (2ULL*LLONG_MAX+1)
  34
  35 #define MB_LEN_MAX 4
  36
  37 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  38  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  39
  40 #include <bits/limits.h>
  41
  42 #define PIPE_BUF 4096
  43 #define FILESIZEBITS 64
  44 #ifndef NAME_MAX
  45 #define NAME_MAX 255
  46 #endif
  47 #define PATH_MAX 4096
  48 #define NGROUPS_MAX 32
  49 #define ARG_MAX 131072
  50 #define IOV_MAX 1024
  51 #define SYMLOOP_MAX 40
  52 #define WORD_BIT 32
  53 #define SSIZE_MAX LONG_MAX
  54 #define TZNAME_MAX 6
  55 #define TTY_NAME_MAX 32
  56 #define HOST_NAME_MAX 255
  57
  58 #if LONG_MAX == 0x7fffffffL
  59 #define LONG_BIT 32
  60 #else
  61 #define LONG_BIT 64
  62 #endif
  63
  64 /* Implementation choices... */
  65
  66 #define PTHREAD_KEYS_MAX 128
  67 #define PTHREAD_STACK_MIN 2048
  68 #define PTHREAD_DESTRUCTOR_ITERATIONS 4
  69 #define SEM_VALUE_MAX 0x7fffffff
  70 #define SEM_NSEMS_MAX 256
  71 #define DELAYTIMER_MAX 0x7fffffff
  72 #define MQ_PRIO_MAX 32768
  73 #define LOGIN_NAME_MAX 256
  74
  75 /* Arbitrary numbers... */
  76
  77 #define BC_BASE_MAX 99
  78 #define BC_DIM_MAX 2048
  79 #define BC_SCALE_MAX 99
  80 #define BC_STRING_MAX 1000
  81 #define CHARCLASS_NAME_MAX 14
  82 #define COLL_WEIGHTS_MAX 2
  83 #define EXPR_NEST_MAX 32
  84 #define LINE_MAX 4096
  85 #define RE_DUP_MAX 255
  86
  87 #define NL_ARGMAX 9
  88 #define NL_MSGMAX 32767
  89 #define NL_SETMAX 255
  90 #define NL_TEXTMAX 2048
  91
  92 #endif
  93
  94 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_XOPEN_SOURCE)
  95
  96 #ifdef PAGESIZE
  97 #define PAGE_SIZE PAGESIZE
  98 #endif
  99 #define NZERO 20
 100 #define NL_LANGMAX 32
 101
 102 #endif
 103
 104 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
 105  || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
 106
 107 #define NL_NMAX 16
 108
 109 #endif
 110
 111 /* POSIX/SUS requirements follow. These numbers come directly
 112  * from SUS and have nothing to do with the host system. */
 113
 114 #define _POSIX_AIO_LISTIO_MAX   2
 115 #define _POSIX_AIO_MAX          1
 116 #define _POSIX_ARG_MAX          4096
 117 #define _POSIX_CHILD_MAX        25
 118 #define _POSIX_CLOCKRES_MIN     20000000
 119 #define _POSIX_DELAYTIMER_MAX   32
 120 #define _POSIX_HOST_NAME_MAX    255
 121 #define _POSIX_LINK_MAX         8
 122 #define _POSIX_LOGIN_NAME_MAX   9
 123 #define _POSIX_MAX_CANON        255
 124 #define _POSIX_MAX_INPUT        255
 125 #define _POSIX_MQ_OPEN_MAX      8
 126 #define _POSIX_MQ_PRIO_MAX      32
 127 #define _POSIX_NAME_MAX         14
 128 #define _POSIX_NGROUPS_MAX      8
 129 #define _POSIX_OPEN_MAX         20
 130 #define _POSIX_PATH_MAX         256
 131 #define _POSIX_PIPE_BUF         512
 132 #define _POSIX_RE_DUP_MAX       255
 133 #define _POSIX_RTSIG_MAX        8
 134 #define _POSIX_SEM_NSEMS_MAX    256
 135 #define _POSIX_SEM_VALUE_MAX    32767
 136 #define _POSIX_SIGQUEUE_MAX     32
 137 #define _POSIX_SSIZE_MAX        32767
 138 #define _POSIX_STREAM_MAX       8
 139 #define _POSIX_SS_REPL_MAX      4
 140 #define _POSIX_SYMLINK_MAX      255
 141 #define _POSIX_SYMLOOP_MAX      8
 142 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
 143 #define _POSIX_THREAD_KEYS_MAX  128
 144 #define _POSIX_THREAD_THREADS_MAX 64
 145 #define _POSIX_TIMER_MAX        32
 146 #define _POSIX_TRACE_EVENT_NAME_MAX 30
 147 #define _POSIX_TRACE_NAME_MAX   8
 148 #define _POSIX_TRACE_SYS_MAX    8
 149 #define _POSIX_TRACE_USER_EVENT_MAX 32
 150 #define _POSIX_TTY_NAME_MAX     9
 151 #define _POSIX_TZNAME_MAX       6
 152 #define _POSIX2_BC_BASE_MAX     99
 153 #define _POSIX2_BC_DIM_MAX      2048
 154 #define _POSIX2_BC_SCALE_MAX    99
 155 #define _POSIX2_BC_STRING_MAX   1000
 156 #define _POSIX2_CHARCLASS_NAME_MAX 14
 157 #define _POSIX2_COLL_WEIGHTS_MAX 2
 158 #define _POSIX2_EXPR_NEST_MAX   32
 159 #define _POSIX2_LINE_MAX        2048
 160 #define _POSIX2_RE_DUP_MAX      255
 161
 162 #define _XOPEN_IOV_MAX          16
 163 #define _XOPEN_NAME_MAX         255
 164 #define _XOPEN_PATH_MAX         1024
 165
 166 #endif