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OpenSolaris 2009.06 - man page for pcre_study (opensolaris section 3)

PCRE_STUDY(3)						     Library Functions Manual						     PCRE_STUDY(3)

NAME
PCRE - Perl-compatible regular expressions
SYNOPSIS
#include <pcre.h> pcre_extra *pcre_study(const pcre *code, int options, const char **errptr);
DESCRIPTION
This function studies a compiled pattern, to see if additional information can be extracted that might speed up matching. Its arguments are: code A compiled regular expression options Options for pcre_study() errptr Where to put an error message If the function succeeds, it returns a value that can be passed to pcre_exec() via its extra argument. If the function returns NULL, either it could not find any additional information, or there was an error. You can tell the difference by looking at the error value. It is NULL in first case. There are currently no options defined; the value of the second argument should always be zero. There is a complete description of the PCRE native API in the pcreapi page and a description of the POSIX API in the pcreposix page.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWpcre | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+
NOTES
Source for PCRE is available on http://opensolaris.org. PCRE_STUDY(3)