docutils literal notranslate"><span class="pre">Index</span></code></a> constructor will return an object of one
of three classes:</p>
<ul class="simple">
<li><p><code class="xref py py-class docutils literal notranslate"><span class="pre">FloatIndex</span></code>, which uses 32-bit precision for all data</p></li>
<li><p><code class="xref py py-class docutils literal notranslate"><span class="pre">Float8Index</span></code>, which uses 8-bit fixed-point precision and requires all vectors to be within the bou