&#160;<span class="preprocessor">#ifndef FASTTEXT_PRODUCT_QUANTIZER_H</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#define FASTTEXT_PRODUCT_QUANTIZER_H</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;cstring&gt;</span></div><div class="line"><a name="l00014"></a><span class