NAME¶

regex_t, regmatch_t, regoff_t - regular expression matching

LIBRARY¶

Standard C library (libc)

SYNOPSIS¶

#include <regex.h>

typedef struct {
    size_t    re_nsub;  /* Number of parenthesized subexpressions */
} regex_t;

typedef struct {
    regoff_t  rm_so;    /* Byte offset from start of string


                           to start of substring */
    regoff_t  rm_eo;    /* Byte offset from start of string to


                           the first character after the end of


                           substring */
} regmatch_t;

typedef /* ... */  regoff_t;

DESCRIPTION¶

regex_t

This is a structure type used in regular expression matching. It holds a compiled regular expression, compiled with regcomp(3).

regmatch_t

This is a structure type used in regular expression matching.

regoff_t

It is a signed integer type capable of storing the largest value that can be stored in either an ptrdiff_t type or a ssize_t type.

STANDARDS¶

POSIX.1-2008.

HISTORY¶

POSIX.1-2001.

Prior to POSIX.1-2008, the type was capable of storing the largest value that can be stored in either an off_t type or a ssize_t type.

SEE ALSO¶

regex(3)