ntegral_promotion</a>
        and <a class="link" href="floating_point_promotion.html" title="floating_point_promotion">floating_point_promotion</a>.
      </p>
<p>
        <span class="bold"><strong>C++ Standard Reference:</strong></span> 4.5 except 4.5/3
        (integral bit-field) and 4.6.
      </p>
<p>
        <span class="bold"><strong>Compiler Compatibility:</strong></span> All current compilers
        are supported by this trait.
      </p>
<p>
        <span class="bold"><strong>Header:</strong></