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)
19 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
20 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
22 #define SSIZE_MAX LONG_MAX
24 #define TTY_NAME_MAX 20
25 #define HOST_NAME_MAX 255
27 /* Implementation choices... */
29 #define PTHREAD_KEYS_MAX 1024
30 #define PTHREAD_STACK_MIN PAGE_SIZE
31 #define PTHREAD_DESTRUCTOR_ITERATIONS 4
32 #define SEM_VALUE_MAX 0x7fffffff
33 #define SEM_NSEMS_MAX 256
34 #define DELAYTIMER_MAX 0x7fffffff
36 /* Arbitrary numbers... */
38 #define BC_BASE_MAX 99
39 #define BC_DIM_MAX 2048
40 #define BC_SCALE_MAX 99
41 #define BC_STRING_MAX 1000
42 #define CHARCLASS_NAME_MAX 14
43 #define COLL_WEIGHTS_MAX 2
44 #define EXPR_NEST_MAX 32
46 #define RE_DUP_MAX 255
50 #define NL_MSGMAX 32767
51 #define NL_NMAX (MB_LEN_MAX*4)
53 #define NL_TEXTMAX 2048
57 /* POSIX/SUS requirements follow. These numbers come directly
58 * from SUS and have nothing to do with the host system. */
60 #define _POSIX_AIO_LISTIO_MAX 2
61 #define _POSIX_AIO_MAX 1
62 #define _POSIX_ARG_MAX 4096
63 #define _POSIX_CHILD_MAX 25
64 #define _POSIX_CLOCKRES_MIN 20000000
65 #define _POSIX_DELAYTIMER_MAX 32
66 #define _POSIX_HOST_NAME_MAX 255
67 #define _POSIX_LINK_MAX 8
68 #define _POSIX_LOGIN_NAME_MAX 9
69 #define _POSIX_MAX_CANON 255
70 #define _POSIX_MAX_INPUT 255
71 #define _POSIX_MQ_OPEN_MAX 8
72 #define _POSIX_MQ_PRIO_MAX 32
73 #define _POSIX_NAME_MAX 14
74 #define _POSIX_NGROUPS_MAX 8
75 #define _POSIX_OPEN_MAX 20
76 #define _POSIX_PATH_MAX 256
77 #define _POSIX_PIPE_BUF 512
78 #define _POSIX_RE_DUP_MAX 255
79 #define _POSIX_RTSIG_MAX 8
80 #define _POSIX_SEM_NSEMS_MAX 256
81 #define _POSIX_SEM_VALUE_MAX 32767
82 #define _POSIX_SIGQUEUE_MAX 32
83 #define _POSIX_SSIZE_MAX 32767
84 #define _POSIX_STREAM_MAX 8
85 #define _POSIX_SS_REPL_MAX 4
86 #define _POSIX_SYMLINK_MAX 255
87 #define _POSIX_SYMLOOP_MAX 8
88 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
89 #define _POSIX_THREAD_KEYS_MAX 128
90 #define _POSIX_THREAD_THREADS_MAX 64
91 #define _POSIX_TIMER_MAX 32
92 #define _POSIX_TRACE_EVENT_NAME_MAX 30
93 #define _POSIX_TRACE_NAME_MAX 8
94 #define _POSIX_TRACE_SYS_MAX 8
95 #define _POSIX_TRACE_USER_EVENT_MAX 32
96 #define _POSIX_TTY_NAME_MAX 9
97 #define _POSIX_TZNAME_MAX 6
98 #define _POSIX2_BC_BASE_MAX 99
99 #define _POSIX2_BC_DIM_MAX 2048
100 #define _POSIX2_BC_SCALE_MAX 99
101 #define _POSIX2_BC_STRING_MAX 1000
102 #define _POSIX2_CHARCLASS_NAME_MAX 14
103 #define _POSIX2_COLL_WEIGHTS_MAX 2
104 #define _POSIX2_EXPR_NEST_MAX 32
105 #define _POSIX2_LINE_MAX 2048
106 #define _POSIX2_RE_DUP_MAX 255
108 #define _XOPEN_IOV_MAX 16
109 #define _XOPEN_NAME_MAX 255
110 #define _XOPEN_PATH_MAX 1024