<span id="the-c-cosmolib-module"></span><h1>the C cosmolib module<a class="headerlink" href="#module-pNbody.cosmolib" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="pNbody.cosmolib.Age_a">
<tt class="descclassname">pNbody.cosmolib.</tt><tt class="descname">Age_a</tt><big>(</big><big>)</big><a class="headerlink" href="#pNbody.cosmolib.Age_a" title="Permalink to this definition">¶</a></dt>
<dd><p>Return age of the univers as a function of a (expansion factor).</p>