1 #ifndef __LIMITS 2 #define __LIMITS 3 /* 8 bit chars (signed), 16 bit shorts, 32 bit ints/longs */ 4 5 #define CHAR_BIT 8 6 #define MB_LEN_MAX 4 7 8 #define UCHAR_MAX 0xff 9 #define USHRT_MAX 0xffff 10 #define UINT_MAX 0xffffffffU 11 #define ULONG_MAX 0xffffffffUL 12 13 #define CHAR_MAX SCHAR_MAX 14 #define SCHAR_MAX 0x7f 15 #define SHRT_MAX 0x7fff 16 #define INT_MAX 0x7fffffff 17 #define LONG_MAX 0x7fffffffL 18 19 #define CHAR_MIN SCHAR_MIN 20 #define SCHAR_MIN (-SCHAR_MAX-1) 21 #define SHRT_MIN (-SHRT_MAX-1) 22 #define INT_MIN (-INT_MAX-1) 23 #define LONG_MIN (-LONG_MAX-1) 24 25 #ifdef _POSIX_SOURCE 26 27 #define _POSIX_AIO_LISTIO_MAX 2 28 #define _POSIX_AIO_MAX 1 29 #define _POSIX_ARG_MAX 4096 30 #define _POSIX_CHILD_MAX 6 31 #define _POSIX_CLOCKRES_MIN 20000000 32 #define _POSIX_DELAYTIMER_MAX 32 33 #define _POSIX_LINK_MAX 8 34 #define _POSIX_MAX_CANON 255 35 #define _POSIX_MAX_INPUT 255 36 #define _POSIX_MQ_OPEN_MAX 8 37 #define _POSIX_MQ_PRIO_MAX 32 38 #define _POSIX_NAME_MAX 14 39 #define _POSIX_NGROUPS_MAX 0 40 #define _POSIX_OPEN_MAX 16 41 #define _POSIX_PATH_MAX 255 42 #define _POSIX_PIPE_BUF 512 43 #define _POSIX_RTSIG_MAX 8 44 #define _POSIX_SEM_NSEMS_MAX 256 45 #define _POSIX_SEM_VALUE_MAX 32767 46 #define _POSIX_SIGQUEUE_MAX 32 47 #define _POSIX_SSIZE_MAX 32767 48 #define _POSIX_STREAM_MAX 8 49 #define _POSIX_TIMER_MAX 32 50 #define _POSIX_TZNAME_MAX 3 51 52 53 /* pedagogy: those that standard allows omitting are commented out */ 54 /*#define AIO_LIST_MAX _POSIX_AIO_LIST_MAX */ 55 /*#define AIO_MAX _POSIX_AIO_MAX */ 56 /*#define AIO_PRIO_DELTA_MAX 0 */ 57 /*#define ARG_MAX _POSIX_ARG_MAX */ 58 /*#define CHILD_MAX _POSIX_CHILD_MAX */ 59 /*#define DELAYTIMER_MAX _POSIX_DELAYTIMER_MAX */ 60 /*#define LINK_MAX _POSIX_LINK_MAX */ 61 /*#define MAX_CANON _POSIX_MAX_CANON */ 62 /*#define MAX_INPUT _POSIX_MAX_INPUT */ 63 /*#define MQ_OPEN_MAX _POSIX_MQ_OPEN_MAX */ 64 /*#define MQ_PRIO_MAX _POSIX_MQ_PRIO_MAX */ 65 /*#define NAME_MAX _POSIX_NAME_MAX */ 66 #define NGROUPS_MAX 10 67 /*#define OPEN_MAX _POSIX_OPEN_MAX */ 68 /*#define PAGESIZE 1 */ 69 #define PASS_MAX 64 70 /*#define PATH_MAX _POSIX_PATH_MAX */ 71 /*#define PIPE_BUF _POSIX_PIPE_BUF */ 72 /*#define RTSIG_MAX _POSIX_RTSIG_MAX */ 73 /*#define SEM_NSEMS_MAX _POSIX_SEM_NSEMS_MAX */ 74 /*#define SEM_VALUE_MAX _POSIX_SEM_VALUE_MAX */ 75 /*#define SIGQUEUE_MAX _POSIX_SIGQUEUE_MAX */ 76 #define SSIZE_MAX LONG_MAX 77 /*#define STREAM_MAX _POSIX_STREAM_MAX */ 78 /*#define TIMER_MAX _POSIX_TIMER_MAX */ 79 #define TZNAME_MAX _POSIX_TZNAME_MAX 80 81 #ifdef _LIMITS_EXTENSION 82 /* some things are just too big for pedagogy (X!) */ 83 #include <sys/limits.h> 84 #endif 85 #endif /* _POSIX_SOURCE */ 86 87 #endif /* __LIMITS */ 88