d5" id="id2">[4]</a>, and a variety of factors
prevent us from incorporating other types of solvers into CVX.</p>
<p>Nevertheless, support for these functions was requested quite frequently.
For this reason, we constructed a <em>successive approximation</em> heuristic that
allows the symmetric primal/dual solvers to support the exponential
family of functions. A precise description of the approach is beyond the
scope of this text, but roughly speaking, the method proceeds as follows:</p>
<ol class="arabic s