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