libc-top-half/musl/include/limits.h

   1 #ifndef _LIMITS_H
   2 #define _LIMITS_H
   3
   4 #include <features.h>
   5
   6 /* Most limits are system-specific */
   7
   8 #include <bits/limits.h>
   9
  10 /* Support signed or unsigned plain-char */
  11
  12 #if '\xff' > 0
  13 #define CHAR_MIN 0
  14 #define CHAR_MAX 255
  15 #else
  16 #define CHAR_MIN (-128)
  17 #define CHAR_MAX 127
  18 #endif
  19
  20 /* Some universal constants... */
  21
  22 #define CHAR_BIT 8
  23 #define SCHAR_MIN (-128)
  24 #define SCHAR_MAX 127
  25 #define UCHAR_MAX 255
  26 #define SHRT_MIN  (-1-0x7fff)
  27 #define SHRT_MAX  0x7fff
  28 #define USHRT_MAX 0xffff
  29 #define INT_MIN  (-1-0x7fffffff)
  30 #define INT_MAX  0x7fffffff
  31 #define UINT_MAX 0xffffffffU
  32 #define LONG_MIN (-LONG_MAX-1)
  33 #define ULONG_MAX (2UL*LONG_MAX+1)
  34 #define LLONG_MIN (-LLONG_MAX-1)
  35 #define ULLONG_MAX (2ULL*LLONG_MAX+1)
  36
  37 #define MB_LEN_MAX 4
  38
  39 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  40  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  41
  42 #ifdef __wasilibc_unmodified_upstream /* WASI has no pipes */
  43 #define PIPE_BUF 4096
  44 #endif
  45 #define FILESIZEBITS 64
  46 #define NAME_MAX 255
  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 /* Implementation choices... */
  59
  60 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
  61 #define PTHREAD_KEYS_MAX 128
  62 #define PTHREAD_STACK_MIN 2048
  63 #define PTHREAD_DESTRUCTOR_ITERATIONS 4
  64 #endif
  65 #ifdef __wasilibc_unmodified_upstream /* WASI has no semaphores */
  66 #define SEM_VALUE_MAX 0x7fffffff
  67 #define SEM_NSEMS_MAX 256
  68 #endif
  69 #define DELAYTIMER_MAX 0x7fffffff
  70 #ifdef __wasilibc_unmodified_upstream /* WASI has no mq */
  71 #define MQ_PRIO_MAX 32768
  72 #endif
  73 #ifdef __wasilibc_unmodified_upstream /* WASI has no usernames */
  74 #define LOGIN_NAME_MAX 256
  75 #endif
  76
  77 /* Arbitrary numbers... */
  78
  79 #ifdef __wasilibc_unmodified_upstream /* WASI has no shell commands */
  80 #define BC_BASE_MAX 99
  81 #define BC_DIM_MAX 2048
  82 #define BC_SCALE_MAX 99
  83 #define BC_STRING_MAX 1000
  84 #endif
  85 #define CHARCLASS_NAME_MAX 14
  86 #define COLL_WEIGHTS_MAX 2
  87 #ifdef __wasilibc_unmodified_upstream /* WASI has no shell commands */
  88 #define EXPR_NEST_MAX 32
  89 #define LINE_MAX 4096
  90 #endif
  91 #define RE_DUP_MAX 255
  92
  93 #define NL_ARGMAX 9
  94 #define NL_MSGMAX 32767
  95 #define NL_SETMAX 255
  96 #define NL_TEXTMAX 2048
  97
  98 #endif
  99
 100 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_XOPEN_SOURCE)
 101
 102 #ifdef PAGESIZE
 103 #define PAGE_SIZE PAGESIZE
 104 #endif
 105 #define NZERO 20
 106 #define NL_LANGMAX 32
 107
 108 #endif
 109
 110 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
 111  || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
 112
 113 #define NL_NMAX 16
 114
 115 #endif
 116
 117 /* POSIX/SUS requirements follow. These numbers come directly
 118  * from SUS and have nothing to do with the host system. */
 119
 120 #define _POSIX_AIO_LISTIO_MAX   2
 121 #define _POSIX_AIO_MAX          1
 122 #define _POSIX_ARG_MAX          4096
 123 #define _POSIX_CHILD_MAX        25
 124 #define _POSIX_CLOCKRES_MIN     20000000
 125 #define _POSIX_DELAYTIMER_MAX   32
 126 #define _POSIX_HOST_NAME_MAX    255
 127 #define _POSIX_LINK_MAX         8
 128 #define _POSIX_LOGIN_NAME_MAX   9
 129 #define _POSIX_MAX_CANON        255
 130 #define _POSIX_MAX_INPUT        255
 131 #define _POSIX_MQ_OPEN_MAX      8
 132 #define _POSIX_MQ_PRIO_MAX      32
 133 #define _POSIX_NAME_MAX         14
 134 #define _POSIX_NGROUPS_MAX      8
 135 #define _POSIX_OPEN_MAX         20
 136 #define _POSIX_PATH_MAX         256
 137 #define _POSIX_PIPE_BUF         512
 138 #define _POSIX_RE_DUP_MAX       255
 139 #define _POSIX_RTSIG_MAX        8
 140 #define _POSIX_SEM_NSEMS_MAX    256
 141 #define _POSIX_SEM_VALUE_MAX    32767
 142 #define _POSIX_SIGQUEUE_MAX     32
 143 #define _POSIX_SSIZE_MAX        32767
 144 #define _POSIX_STREAM_MAX       8
 145 #define _POSIX_SS_REPL_MAX      4
 146 #define _POSIX_SYMLINK_MAX      255
 147 #define _POSIX_SYMLOOP_MAX      8
 148 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
 149 #define _POSIX_THREAD_KEYS_MAX  128
 150 #define _POSIX_THREAD_THREADS_MAX 64
 151 #define _POSIX_TIMER_MAX        32
 152 #define _POSIX_TRACE_EVENT_NAME_MAX 30
 153 #define _POSIX_TRACE_NAME_MAX   8
 154 #define _POSIX_TRACE_SYS_MAX    8
 155 #define _POSIX_TRACE_USER_EVENT_MAX 32
 156 #define _POSIX_TTY_NAME_MAX     9
 157 #define _POSIX_TZNAME_MAX       6
 158 #define _POSIX2_BC_BASE_MAX     99
 159 #define _POSIX2_BC_DIM_MAX      2048
 160 #define _POSIX2_BC_SCALE_MAX    99
 161 #define _POSIX2_BC_STRING_MAX   1000
 162 #define _POSIX2_CHARCLASS_NAME_MAX 14
 163 #define _POSIX2_COLL_WEIGHTS_MAX 2
 164 #define _POSIX2_EXPR_NEST_MAX   32
 165 #define _POSIX2_LINE_MAX        2048
 166 #define _POSIX2_RE_DUP_MAX      255
 167
 168 #define _XOPEN_IOV_MAX          16
 169 #define _XOPEN_NAME_MAX         255
 170 #define _XOPEN_PATH_MAX         1024
 171
 172 #endif