otherwise 0.
</p>


<h2 id="mathfunctions">Math functions</h2>

<p id="basicArithmetic" class="funcname">QP functions for basic arithmetic operations</p>

<p class="header">Synopsis</p>

<p class="synopsis">
#include &lt;sleefquad.h&gt;<br/>
<br/>
<b class="type">Sleef_quad</b> <b class="func">Sleef_addq1_u05</b>( <b class="type">Sleef_quad</b> <i class="var">a</i>, <b class="type">Sleef_quad</b> <i class="var">b</i> );<br/>
<b class="type">Sleef_quad</b> <b class="func">Sleef_subq1_u05</b>( <b class="type"