s="symbol">ECPG_INFORMIX_NUM_OVERFLOW</code> is returned in case of overflow and
        <code class="symbol">ECPG_INFORMIX_NUM_UNDERFLOW</code> in case of underflow. -1 is returned for
        other failures and <code class="varname">errno</code> is set to the respective <code class="varname">errno</code> number of the
        pgtypeslib.
       </p></dd><dt id="ECPG-INFORMIX-FUNCTIONS-DECCMP"><span class="term"><code class="function">deccmp</code></span> <a href="#ECPG-INFORMIX-FUNCTIONS-DECCMP" class="id