upper triangular). </p>
<dl class="section user"><dt>Usage</dt><dd>The following example illustrates the use of the rank 1 Cholesky downdate, and compares the results to factoring the original rank 1 downdated matrix. <div class="fragment"><div class="line"><span class="keyword">program</span> example</div>
<div class="line">    <span class="keywordtype">use </span>iso_fortran_env, <span class="keywordtype">only</span> : real64, int32</div>
<div class="line">    <span class="keywordtype">use </span>linalg_f