|| || || || || || || ||

---

limits.h

Go to the documentation of this file.

#define ARG_MAX     10240      /* max length of arguments to exec */
#define CHAR_BIT    8          /* # of bits in a "char" */
#define CHAR_MAX    255        /* max integer value of a "char" */
#define CHAR_MIN    0          /* min integer value of a "char" */
#define CHILD_MAX   25         /* max # of processes per user id */
#define CLK_TCK     100        /* # of clock ticks per second */
#define DBL_DIG     15         /* digits of precision of a "double" */
     #define DBL_MAX     1.7976931348623157E+308
/* max decimal value of a "double" */
     #define DBL_MIN     2.2250738585072014E-308
/* min decimal value of a "double" */
#define FCHR_MAX    2147483647 /* max size of a file in bytes */
#define FLT_DIG     6          /* digits of precision of a "float" */
#define FLT_MAX     3.40282347e+38 /* max decimal value of a "float" */
#define FLT_MIN     1.17549435e-38 /* min decimal value of a "float" */
     #define HUGE_VAL    1.7976931348623157E+308
/* error value returned by Math lib */
#define INT_MAX     2147483647 /* max decimal value of an "int" */
#define INT_MIN     -2147483648/* min decimal value of an "int" */
#define LINK_MAX    1000       /* max # of links to a single file */
#define LONG_MAX    2147483647 /* max decimal value of a "long" */
#define LONG_MIN    -2147483648/* min decimal value of a "long" */
#define MAX_CANON   255        /* max # of bytes in a terminal */
/* canonical input queue */
#define MAX_INPUT   255        /* max # of bytes for which space will be */
/* available in a terminal input queue */

#define MB_LEN_MAX  1          /* max # of characters in a multibyte */
/* character */
#define NAME_MAX    255        /* max # of characters in a file name */
#define NGROUPS_MAX 0          /* max # of simultaneous supplementary */
/* group IDs per process */
#define OPEN_MAX    20         /* max # of files a process can have open */
#define PASS_MAX    8          /* max # of characters in a password */
#define PATH_MAX    1024       /* max # of characters in a path name */
#define PID_MAX     30000      /* max value for a process ID */
#define PIPE_BUF    10240      /* max # bytes atomic in write to a pipe */
#define PIPE_MAX    10240      /* max # bytes written to a pipe */
/* in a write */
#define SCHAR_MAX   127        /* max decimal value of a "signed char" */
#define SCHAR_MIN   -128       /* min decimal value of a "signed char" */
#define SHRT_MAX    32767      /* max decimal value of a "short" */
#define SHRT_MIN    -32768     /* min decimal value of a "short" */
#define STD_BLK     1024       /* # bytes in a physical I/O block */
#define SYS_NMLN    9          /* # of chars in uname-returned strings */
#define UCHAR_MAX   255        /* max decimal value of an */
/* "unsigned char" */
#define UID_MAX     60000      /* max value for a user or group ID */
#define UINT_MAX    4294967295 /* max decimal value of an "unsigned int" */
#define ULONG_MAX   4294967295 /* max decimal value of an */
/* "unsigned long" */
#define USHRT_MAX   65535      /* max decimal value of an */
/* "unsigned short" */
#define USI_MAX     4294967295 /* max decimal value of an "unsigned" */
#define WORD_BIT    32         /* # of bits in a "word" or "int" */

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