cannot find identifier: __mul128
<p>I'm getting an error (VS2010 sp1) :<br>
<strong>Error 25  error C3861: '_mul128': identifier not found</strong><br>
Code looks like this:  </p>

<pre><code>#include "stdafx.h"
#include &lt;intrin.h&gt;

int _tmain(int argc, _TCHAR* argv[])
{
    __int64* high = nullptr;
    _mul128(2LL,4LL,high);
    return 0;
}  
</code></pre>

<p>Could it be that this fnc can be called only on 64 bit architecture?</p>
