</span>
<span class="n">doubleprecision</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">yr</span>
<span class="n">doubleprecision</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">yi</span>
<span class="n">doubleprecision</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">tr</span>
<span class="n">doubleprecision</span><span class="w"> </span><span class="kd">::</span><s