6 /* Most limits are system-specific */
8 #include <bits/limits.h>
10 /* Support signed or unsigned plain-char */
12 #ifdef __CHAR_UNSIGNED__
16 #define CHAR_MIN (-128)
20 /* Some universal constants... */
23 #define SCHAR_MIN (-128)
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)
39 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
40 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
43 #define PAGESIZE PAGE_SIZE
44 #define FILESIZEBITS 64
46 #define SYMLINK_MAX 255
49 #define NGROUPS_MAX 32
50 #define ARG_MAX 131072
52 #define SYMLOOP_MAX 40
54 #define SSIZE_MAX LONG_MAX
56 #define TTY_NAME_MAX 20
57 #define HOST_NAME_MAX 255
59 /* Implementation choices... */
61 #define PTHREAD_KEYS_MAX 1024
62 #define PTHREAD_STACK_MIN PAGE_SIZE
63 #define PTHREAD_DESTRUCTOR_ITERATIONS 4
64 #define SEM_VALUE_MAX 0x7fffffff
65 #define SEM_NSEMS_MAX 256
66 #define DELAYTIMER_MAX 0x7fffffff
67 #define MQ_PRIO_MAX 32768
68 #define LOGIN_NAME_MAX 256
70 /* Arbitrary numbers... */
72 #define BC_BASE_MAX 99
73 #define BC_DIM_MAX 2048
74 #define BC_SCALE_MAX 99
75 #define BC_STRING_MAX 1000
76 #define CHARCLASS_NAME_MAX 14
77 #define COLL_WEIGHTS_MAX 2
78 #define EXPR_NEST_MAX 32
80 #define RE_DUP_MAX 255
84 #define NL_MSGMAX 32767
85 #define NL_NMAX (MB_LEN_MAX*4)
87 #define NL_TEXTMAX 2048
91 /* POSIX/SUS requirements follow. These numbers come directly
92 * from SUS and have nothing to do with the host system. */
94 #define _POSIX_AIO_LISTIO_MAX 2
95 #define _POSIX_AIO_MAX 1
96 #define _POSIX_ARG_MAX 4096
97 #define _POSIX_CHILD_MAX 25
98 #define _POSIX_CLOCKRES_MIN 20000000
99 #define _POSIX_DELAYTIMER_MAX 32
100 #define _POSIX_HOST_NAME_MAX 255
101 #define _POSIX_LINK_MAX 8
102 #define _POSIX_LOGIN_NAME_MAX 9
103 #define _POSIX_MAX_CANON 255
104 #define _POSIX_MAX_INPUT 255
105 #define _POSIX_MQ_OPEN_MAX 8
106 #define _POSIX_MQ_PRIO_MAX 32
107 #define _POSIX_NAME_MAX 14
108 #define _POSIX_NGROUPS_MAX 8
109 #define _POSIX_OPEN_MAX 20
110 #define _POSIX_PATH_MAX 256
111 #define _POSIX_PIPE_BUF 512
112 #define _POSIX_RE_DUP_MAX 255
113 #define _POSIX_RTSIG_MAX 8
114 #define _POSIX_SEM_NSEMS_MAX 256
115 #define _POSIX_SEM_VALUE_MAX 32767
116 #define _POSIX_SIGQUEUE_MAX 32
117 #define _POSIX_SSIZE_MAX 32767
118 #define _POSIX_STREAM_MAX 8
119 #define _POSIX_SS_REPL_MAX 4
120 #define _POSIX_SYMLINK_MAX 255
121 #define _POSIX_SYMLOOP_MAX 8
122 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
123 #define _POSIX_THREAD_KEYS_MAX 128
124 #define _POSIX_THREAD_THREADS_MAX 64
125 #define _POSIX_TIMER_MAX 32
126 #define _POSIX_TRACE_EVENT_NAME_MAX 30
127 #define _POSIX_TRACE_NAME_MAX 8
128 #define _POSIX_TRACE_SYS_MAX 8
129 #define _POSIX_TRACE_USER_EVENT_MAX 32
130 #define _POSIX_TTY_NAME_MAX 9
131 #define _POSIX_TZNAME_MAX 6
132 #define _POSIX2_BC_BASE_MAX 99
133 #define _POSIX2_BC_DIM_MAX 2048
134 #define _POSIX2_BC_SCALE_MAX 99
135 #define _POSIX2_BC_STRING_MAX 1000
136 #define _POSIX2_CHARCLASS_NAME_MAX 14
137 #define _POSIX2_COLL_WEIGHTS_MAX 2
138 #define _POSIX2_EXPR_NEST_MAX 32
139 #define _POSIX2_LINE_MAX 2048
140 #define _POSIX2_RE_DUP_MAX 255
142 #define _XOPEN_IOV_MAX 16
143 #define _XOPEN_NAME_MAX 255
144 #define _XOPEN_PATH_MAX 1024