class="n">logdetXX</span> <span class="o">+</span> <span class="p">(</span><span class="n">N</span><span class="o">-</span><span class="n">D</span><span class="p">)</span> <span class="o">*</span> <span class="p">(</span> <span class="n">SP</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="mf">2.0</span><span class="o">*</span><span class="n">SP</span><span class="o">.</span><span class="n">pi</span><span class="o">*</span><span class="n">sigma2</span><span class="