tput of nonfinite values is not portable.
      </p>
<h5>
<a name="math_toolkit.fp_facets.facets_intro.h3"></a>
        <span class="phrase"><a name="math_toolkit.fp_facets.facets_intro.c99_standard_for_output_of_infin"></a></span><a class="link" href="facets_intro.html#math_toolkit.fp_facets.facets_intro.c99_standard_for_output_of_infin">C99
        standard for output of infinity and NaN</a>
      </h5>
<p>
        The <a href="http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf" target="_top">C99
 