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<tr><td colspan="2"><div class="groupHeader">Arithmetic operation</div></td></tr>
<tr><td colspan="2"><div class="groupText"><p>Only the "destructive" versions are used, i.e., a += b is implemented but not a + b. </p>
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<a class="el" href="classhelib_1_1_double_c_r_t.html">DoubleCRT</a> &amp;&#160;</t