wo <i>struct tm</i> structures <i>from</i> and <i>to</i>. The difference in days is placed into <i>*pday</i>, the remaining seconds are placed to <i>*psec</i>. The value in <i>*psec</i> will be less than the number of seconds per day (3600). Leap seconds are not considered.</p>

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

<p>OPENSSL_gmtime() returns NULL on error, or <i>result</i> on success.</p>

<p>OPENSSL_gmtime_adj() and OPENSSL_gmtime_diff() return 0 on error, and 1 on success.</p>

<h1 id="HISTORY">HIS