nopsis">
int rfmtlong(long lng_val, char *fmt, char *outbuf);
</pre><p>
        The function receives the long value <code class="literal">lng_val</code>, the format
        mask <code class="literal">fmt</code> and a pointer to the output buffer
        <code class="literal">outbuf</code>. It converts the long value according to the format
        mask to its textual representation.
       </p><p>
        The format mask can be composed of the following format specifying
        characters:
        </p><di