rgument list <i>args</i> is a stdarg argument list.</p>

<p>BIO_snprintf() is for platforms that do not have the common snprintf() function. It is like sprintf() except that the size parameter, <i>n</i>, specifies the size of the output buffer.</p>

<p>BIO_vsnprintf() is to BIO_snprintf() as BIO_vprintf() is to BIO_printf().</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>All functions return the number of bytes written, or -1 on error. For BIO_snprintf() and BIO_vsnprintf() this includes when the output