output">in</code>).</p>
<p>When <code class="computeroutput">(out.flags() &amp; std::ios_base::boolalpha) != 0</code>, this function first determines the names of the false, true, and indeterminate values. The false and true names are extracted from the <code class="computeroutput">std::numpunct</code> facet of the input stream's locale (if the C++ standard library implementation supports locales), or from the <code class="computeroutput">default_false_name</code> and <code class="computeroutput">default_tr