diff --git a/psb_prec_mod.F90 b/psb_prec_mod.F90
new file mode 100644
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+++ b/psb_prec_mod.F90
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+!!$ 
+!!$ 
+!!$                    MD2P4
+!!$    Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS
+!!$                      for 
+!!$              Parallel Sparse BLAS  v2.0
+!!$    (C) Copyright 2006 Salvatore Filippone    University of Rome Tor Vergata
+!!$                       Alfredo Buttari        University of Rome Tor Vergata
+!!$                       Daniela di Serafino    Second University of Naples
+!!$                       Pasqua D'Ambra         ICAR-CNR                      
+!!$ 
+!!$  Redistribution and use in source and binary forms, with or without
+!!$  modification, are permitted provided that the following conditions
+!!$  are met:
+!!$    1. Redistributions of source code must retain the above copyright
+!!$       notice, this list of conditions and the following disclaimer.
+!!$    2. Redistributions in binary form must reproduce the above copyright
+!!$       notice, this list of conditions, and the following disclaimer in the
+!!$       documentation and/or other materials provided with the distribution.
+!!$    3. The name of the MD2P4 group or the names of its contributors may
+!!$       not be used to endorse or promote products derived from this
+!!$       software without specific written permission.
+!!$ 
+!!$  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!!$  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!!$  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!!$  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MD2P4 GROUP OR ITS CONTRIBUTORS
+!!$  BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!!$  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!!$  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!!$  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!!$  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!!$  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!!$  POSSIBILITY OF SUCH DAMAGE.
+!!$ 
+!!$  
+module psb_prec_mod
+
+!!$  use mld_prec_type, &
+!!$       & psb_dbaseprc_type    => mld_dbaseprc_type,&
+!!$       & psb_zbaseprc_type    => mld_zbaseprc_type,&
+!!$       & psb_dprec_type       => mld_dprec_type,&
+!!$       & psb_zprec_type       => mld_zprec_type,&
+!!$       & psb_base_precfree    => mld_base_precfree,&
+!!$       & psb_nullify_baseprec => mld_nullify_baseprec,&
+!!$       & psb_prec_descr       => mld_prec_descr,&
+!!$       & psb_prec_short_descr => mld_prec_short_descr
+
+!!$  use mld_prec_mod
+!!$  
+!!$
+!!$  interface psb_precbld
+!!$    module procedure mld_dprecbld, mld_zprecbld
+!!$  end interface
+!!$
+!!$  interface psb_precinit
+!!$    module procedure  mld_dprecinit, mld_zprecinit
+!!$  end interface
+!!$
+!!$  interface psb_precset
+!!$    module procedure  mld_dprecseti, mld_dprecsetd,&
+!!$         &  mld_zprecseti,  mld_zprecsetd
+!!$  end interface
+!!$
+!!$  interface psb_precfree
+!!$    module procedure  mld_dprecfree,  mld_zprecfree
+!!$  end interface
+!!$
+!!$  interface psb_precaply
+!!$    module procedure  mld_dprec_aply,  mld_dprec_aply1, &
+!!$         &  mld_zprec_aply,  mld_zprec_aply1
+!!$  end interface
+!!$
+
+  use mld_prec_mod, &
+       & psb_dbaseprc_type    => mld_dbaseprc_type,&
+       & psb_zbaseprc_type    => mld_zbaseprc_type,&
+       & psb_dprec_type       => mld_dprec_type,&
+       & psb_zprec_type       => mld_zprec_type,&
+       & psb_base_precfree    => mld_base_precfree,&
+       & psb_nullify_baseprec => mld_nullify_baseprec,&
+       & psb_prec_descr       => mld_prec_descr,&
+       & psb_prec_short_descr => mld_prec_short_descr,&
+       & psb_precbld  => mld_precbld,   &
+       & psb_precinit => mld_precinit,  &
+       & psb_precfree =>  mld_precfree, &
+       & psb_precset  => mld_precset,  &
+       & psb_precaply =>  mld_precaply
+
+ 
+  interface psb_sizeof
+    module procedure mld_dprec_sizeof, mld_zprec_sizeof, &
+         & mld_dbaseprc_sizeof, mld_zbaseprc_sizeof
+  end interface
+
+
+end module psb_prec_mod