NAME

       re_comp, re_exec - BSD regex functions

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #define _REGEX_RE_COMP
       #include <sys/types.h>
       #include <regex.h>

       [[deprecated]] char *re_comp(const char *regex);
       [[deprecated]] int re_exec(const char *string);

DESCRIPTION

       re_comp()  is  used to compile the null-terminated regular expression pointed to by regex.
       The compiled pattern occupies a static area, the pattern buffer, which is  overwritten  by
       subsequent  use of re_comp().  If regex is NULL, no operation is performed and the pattern
       buffer's contents are not altered.

       re_exec() is used to assess whether  the  null-terminated  string  pointed  to  by  string
       matches the previously compiled regex.

RETURN VALUE

       re_comp()  returns  NULL on successful compilation of regex otherwise it returns a pointer
       to an appropriate error message.

       re_exec() returns 1 for a successful match, zero for failure.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌─────────────────────────────────────────────────────────────┬───────────────┬───────────┐
       │Interface                                                    │ Attribute     │ Value     │
       ├─────────────────────────────────────────────────────────────┼───────────────┼───────────┤
       │re_comp(), re_exec()                                         │ Thread safety │ MT-Unsafe │
       └─────────────────────────────────────────────────────────────┴───────────────┴───────────┘

STANDARDS

       None.

HISTORY

       4.3BSD.

       These functions are obsolete; the  functions  documented  in  regcomp(3)  should  be  used
       instead.

SEE ALSO

       regcomp(3), regex(7), GNU regex manual