ass="verb"><span 
class="cmtt-12">mld_prec_mod</span></span></span><span 
class="cmr-12">, containing the definition of the preconditioner</span>
<span 
class="cmr-12">data type and the interfaces to the routines of MLD2P4, must be used in any program</span>
<span 
class="cmr-12">calling such routines. The modules </span><span class="obeylines-h"><span class="verb"><span 
class="cmtt-12">psb_base_mod</span></span></span><span 
class="cmr-12">, for the sparse matrix and</span>
<span 
class="cmr-12">communica