n><span class="special">,</span> <span class="number">0.0</span><span class="special">));</span>

    <span class="keyword">double</span> <span class="identifier">l</span> <span class="special">=</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">length</span><span class="special">(</span><span class="identifier">mls1</span><span class="special">);</span>

    <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> 