ss="n">mat_flop</span><span class="p">(</span><span class="n">s</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nb">dabs</span><span class="p">(</span><span class="n">xr</span><span class="p">(</span><span class="n">ix</span><span class="p">))</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nb">dabs</span><span class="p">(</span><span class="n">xi</span><span class="p">(</span><span class="n">ix</span><span class="p">)))</