ctor of QP FP numbers, where one of these
  registers holds the upper part of QP numbers, and the other register
  holds the lower part. Dedicated functions are provided to load to or
  store from variables in vector QP data types.
</p>


<h2 id="datatypes">Data types</h2>

<p class="funcname"><b class="type">Sleef_quad</b></p>

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

<p class="noindent">
  <b class="type">Sleef_quad</b> is a data type for retaining a single
  QP FP number. If the compiler natively supports IEEE