epsilon_float&nbsp;:&nbsp;float<br>
&nbsp;&nbsp;<span class="keyword">type</span>&nbsp;fpclass&nbsp;=&nbsp;<span class="constructor">FP_normal</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">FP_subnormal</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">FP_zero</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">FP_infinite</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">FP_nan</span><br>
&nbsp;