NAME

       re_comp, re_exec - BSD regex functions

SYNOPSIS

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

       char *re_comp(char *regex);

       int re_exec(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

   Multithreading (see pthreads(7))
       The re_comp() and re_exec() functions are not thread-safe.

CONFORMING TO

       4.3BSD.

NOTES

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

SEE ALSO

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

COLOPHON

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