"><span class="keyword">explicit</span> <a name="id-1_3_35_5_6_25_1_1_1_7-bb"></a><span class="identifier">lognormal_distribution</span><span class="special">(</span><span class="identifier">RealType</span> m <span class="special">=</span> <span class="number">0</span><span class="special">.</span><span class="number">0</span><span class="special">,</span> <span class="identifier">RealType</span> s <span class="special">=</span> <span class="number">1</span><span class="special">.</span><span class="number"