Internally it is defined as -1200 (the <span class="productname">Informix</span>
        definition).
       </p></dd><dt id="ECPG-INFORMIX-CONSTANTS-ECPG-INFORMIX-NUM-UNDERFLOW"><span class="term"><code class="literal">ECPG_INFORMIX_NUM_UNDERFLOW</code></span> <a href="#ECPG-INFORMIX-CONSTANTS-ECPG-INFORMIX-NUM-UNDERFLOW" class="id_link">#</a></dt><dd><p>
        Functions return this value if an underflow occurred in a calculation.
        Internally it is defined as -1201 (the <span class="productname">I