4 /* Most limits are system-specific */
6 #include <bits/limits.h>
8 /* Support signed or unsigned plain-char */
10 #ifdef __CHAR_UNSIGNED__
14 #define CHAR_MIN (-128)
18 /* Some universal constants... */
21 #define SCHAR_MIN (-128)
24 #define SHRT_MIN (-1-0x7fff)
25 #define SHRT_MAX 0x7fff
26 #define USHRT_MAX 0xffff
27 #define INT_MIN (-1-0x7fffffff)
28 #define INT_MAX 0x7fffffff
29 #define UINT_MAX 0xffffffffU
30 #define LONG_MIN (-LONG_MAX-1)
31 #define ULONG_MAX (2UL*LONG_MAX+1)
32 #define LLONG_MIN (-LLONG_MAX-1)
33 #define ULLONG_MAX (2ULL*LLONG_MAX+1)
37 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
38 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
41 #define PAGESIZE PAGE_SIZE
42 #define FILESIZEBITS 64
44 #define SYMLINK_MAX 255
47 #define NGROUPS_MAX 32
48 #define ARG_MAX 131072
50 #define SYMLOOP_MAX 40
52 #define SSIZE_MAX LONG_MAX
54 #define TTY_NAME_MAX 20
55 #define HOST_NAME_MAX 255
57 /* Implementation choices... */
59 #define PTHREAD_KEYS_MAX 1024
60 #define PTHREAD_STACK_MIN PAGE_SIZE
61 #define PTHREAD_DESTRUCTOR_ITERATIONS 4
62 #define SEM_VALUE_MAX 0x7fffffff
63 #define SEM_NSEMS_MAX 256
64 #define DELAYTIMER_MAX 0x7fffffff
65 #define MQ_PRIO_MAX 32768
67 /* Arbitrary numbers... */
69 #define BC_BASE_MAX 99
70 #define BC_DIM_MAX 2048
71 #define BC_SCALE_MAX 99
72 #define BC_STRING_MAX 1000
73 #define CHARCLASS_NAME_MAX 14
74 #define COLL_WEIGHTS_MAX 2
75 #define EXPR_NEST_MAX 32
77 #define RE_DUP_MAX 255
81 #define NL_MSGMAX 32767
82 #define NL_NMAX (MB_LEN_MAX*4)
84 #define NL_TEXTMAX 2048
88 /* POSIX/SUS requirements follow. These numbers come directly
89 * from SUS and have nothing to do with the host system. */
91 #define _POSIX_AIO_LISTIO_MAX 2
92 #define _POSIX_AIO_MAX 1
93 #define _POSIX_ARG_MAX 4096
94 #define _POSIX_CHILD_MAX 25
95 #define _POSIX_CLOCKRES_MIN 20000000
96 #define _POSIX_DELAYTIMER_MAX 32
97 #define _POSIX_HOST_NAME_MAX 255
98 #define _POSIX_LINK_MAX 8
99 #define _POSIX_LOGIN_NAME_MAX 9
100 #define _POSIX_MAX_CANON 255
101 #define _POSIX_MAX_INPUT 255
102 #define _POSIX_MQ_OPEN_MAX 8
103 #define _POSIX_MQ_PRIO_MAX 32
104 #define _POSIX_NAME_MAX 14
105 #define _POSIX_NGROUPS_MAX 8
106 #define _POSIX_OPEN_MAX 20
107 #define _POSIX_PATH_MAX 256
108 #define _POSIX_PIPE_BUF 512
109 #define _POSIX_RE_DUP_MAX 255
110 #define _POSIX_RTSIG_MAX 8
111 #define _POSIX_SEM_NSEMS_MAX 256
112 #define _POSIX_SEM_VALUE_MAX 32767
113 #define _POSIX_SIGQUEUE_MAX 32
114 #define _POSIX_SSIZE_MAX 32767
115 #define _POSIX_STREAM_MAX 8
116 #define _POSIX_SS_REPL_MAX 4
117 #define _POSIX_SYMLINK_MAX 255
118 #define _POSIX_SYMLOOP_MAX 8
119 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
120 #define _POSIX_THREAD_KEYS_MAX 128
121 #define _POSIX_THREAD_THREADS_MAX 64
122 #define _POSIX_TIMER_MAX 32
123 #define _POSIX_TRACE_EVENT_NAME_MAX 30
124 #define _POSIX_TRACE_NAME_MAX 8
125 #define _POSIX_TRACE_SYS_MAX 8
126 #define _POSIX_TRACE_USER_EVENT_MAX 32
127 #define _POSIX_TTY_NAME_MAX 9
128 #define _POSIX_TZNAME_MAX 6
129 #define _POSIX2_BC_BASE_MAX 99
130 #define _POSIX2_BC_DIM_MAX 2048
131 #define _POSIX2_BC_SCALE_MAX 99
132 #define _POSIX2_BC_STRING_MAX 1000
133 #define _POSIX2_CHARCLASS_NAME_MAX 14
134 #define _POSIX2_COLL_WEIGHTS_MAX 2
135 #define _POSIX2_EXPR_NEST_MAX 32
136 #define _POSIX2_LINE_MAX 2048
137 #define _POSIX2_RE_DUP_MAX 255
139 #define _XOPEN_IOV_MAX 16
140 #define _XOPEN_NAME_MAX 255
141 #define _XOPEN_PATH_MAX 1024