         <b>const</b> match_results&lt;iterator, Allocator&gt;&amp; m,
                            <b>const</b> std::basic_string&lt;charT&gt;&amp; fmt,
                            match_flag_type flags = 0);
</pre>

<p>The library also defines the following convenience variation of
regex_format, which returns the result directly as a string, rather
than outputting to an iterator [note - this version may not be
available, or may be available in a more limited form, depending
upon your compilers capabilities