t
        and parse all floating-point numbers, including <code class="computeroutput"><span class="identifier">infinity</span></code>
        and <code class="computeroutput"><span class="identifier">NaN</span></code>, in a consistent
        and portable manner.
      </p>
<p>
        The following test succeeds with MSVC.
      </p>
<pre class="programlisting"><span class="identifier">locale</span> <span class="identifier">old_locale</span><span class="special">;</span>
<span class="identifier">locale</s