lass="odoc-spec"><div class="spec value anchored" id="val-chol"><a href="#val-chol" class="anchor"></a><code><span><span class="keyword">val</span> chol : <span><span class="optlabel">?upper</span>:bool <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-mat">mat</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-mat">mat</a></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-qr"><a href="#val-qr" class="anchor"></a><code><span><span class="keyw