pan 
class="cmr-12">= complex double precision). This</span>
     <span 
class="cmr-12">data structure is accessed by the user only through the MLD2P4 routines,</span>
     <span 
class="cmr-12">following an object-oriented approach.</span>
     </li>
     <li 
  class="enumerate" id="x17-16004x2"><span 
class="cmti-12">Allocate  and  initialize  the  preconditioner  data  structure,  according  to  a</span>
     <span 
class="cmti-12">preconditioner type chosen by the user</span><span 
class="cmr-12">. Thi