uring
        their operation.  Internally it is defined as -1211 (the
        <span class="productname">Informix</span> definition).
       </p></dd><dt id="ECPG-INFORMIX-CONSTANTS-ECPG-INFORMIX-ENOTDMY"><span class="term"><code class="literal">ECPG_INFORMIX_ENOTDMY</code></span> <a href="#ECPG-INFORMIX-CONSTANTS-ECPG-INFORMIX-ENOTDMY" class="id_link">#</a></dt><dd><p>
        Functions return this value if a parsing routine was supposed to get a
        format mask (like <code class="literal">mmddyy</code