u do not need to disable expression templates. Please try reintroducing temporaries using either <code>prod
(A,</code> <code><em>matrix_type</em></code> <code>(prod (B, C)))</code> or <code>prod (A,
prod&lt;</code><code><em>matrix_type</em></code> <code>&gt; (B, C))</code>.</p>

<hr />

<p>Copyright (&copy;) 2000-2011 Joerg Walter, Mathias Koch, Gunter Winkler, David Bellot<br />
Use, modification and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file
LICENSE_1_0.txt