</code> of the stream when an attempt
        is made to parse a string that represents positive or negative infinity.
      </p>
<p>
        (See Design Rationale below for a discussion of this inconsistency.)
      </p>
<h6>
<a name="math_toolkit.fp_facets.reference.h6"></a>
        <span class="phrase"><a name="math_toolkit.fp_facets.reference.trap_nan"></a></span><a class="link" href="reference.html#math_toolkit.fp_facets.reference.trap_nan">trap_nan</a>
      </h6>
<p>
        Same as <code class="comp