!!$ 
!!$ 
!!$                    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 mld_prec_mod
  use mld_prec_type


  interface mld_precbld
    subroutine mld_dprecbld(a,desc_a,prec,info,upd)
      use psb_base_mod
      use mld_prec_type
      implicit none
      type(psb_dspmat_type), intent(in), target  :: a
      type(psb_desc_type), intent(in), target    :: desc_a
      type(mld_dprec_type), intent(inout)        :: prec
      integer, intent(out)                       :: info
      character, intent(in),optional             :: upd
    end subroutine mld_dprecbld
    subroutine mld_zprecbld(a,desc_a,prec,info,upd)
      use psb_base_mod
      use mld_prec_type
      implicit none
      type(psb_zspmat_type), intent(in), target  :: a
      type(psb_desc_type), intent(in), target    :: desc_a
      type(mld_zprec_type), intent(inout)        :: prec
      integer, intent(out)                       :: info
      character, intent(in),optional             :: upd
    end subroutine mld_zprecbld
  end interface

  interface mld_precinit
    subroutine mld_dprecinit(p,ptype,info,nlev)
      
      use psb_base_mod
      use mld_prec_type
      type(mld_dprec_type), intent(inout)    :: p
      character(len=*), intent(in)           :: ptype
      integer, intent(out)                   :: info
      integer, optional, intent(in)          :: nlev
    end subroutine mld_dprecinit
    subroutine mld_zprecinit(p,ptype,info,nlev)
      
      use psb_base_mod
      use mld_prec_type
      type(mld_zprec_type), intent(inout)    :: p
      character(len=*), intent(in)           :: ptype
      integer, intent(out)                   :: info
      integer, optional, intent(in)          :: nlev
    end subroutine mld_zprecinit
  end interface

  interface mld_precset
    subroutine mld_dprecseti(p,what,val,info,ilev)
      use psb_base_mod
      use mld_prec_type
      type(mld_dprec_type), intent(inout)    :: p
      integer, intent(in)                    :: what 
      integer, intent(in)                    :: val
      integer, intent(out)                   :: info
      integer, optional, intent(in)          :: ilev
    end subroutine mld_dprecseti
    subroutine mld_dprecsetd(p,what,val,info,ilev)
      use psb_base_mod
      use mld_prec_type
      type(mld_dprec_type), intent(inout)    :: p
      integer, intent(in)                    :: what 
      real(kind(1.d0)), intent(in)           :: val
      integer, intent(out)                   :: info
      integer, optional, intent(in)          :: ilev
    end subroutine mld_dprecsetd
    subroutine mld_zprecseti(p,what,val,info,ilev)
      use psb_base_mod
      use mld_prec_type
      type(mld_zprec_type), intent(inout)    :: p
      integer, intent(in)                    :: what 
      integer, intent(in)                    :: val
      integer, intent(out)                   :: info
      integer, optional, intent(in)          :: ilev
    end subroutine mld_zprecseti
    subroutine mld_zprecsetd(p,what,val,info,ilev)
      use psb_base_mod
      use mld_prec_type
      type(mld_zprec_type), intent(inout)    :: p
      integer, intent(in)                    :: what 
      real(kind(1.d0)), intent(in)           :: val
      integer, intent(out)                   :: info
      integer, optional, intent(in)          :: ilev
    end subroutine mld_zprecsetd
  end interface


  interface mld_precfree
    subroutine mld_dprecfree(p,info)
      use psb_base_mod
      use mld_prec_type
      type(mld_dprec_type), intent(inout) :: p
      integer, intent(out)                :: info
    end subroutine mld_dprecfree
    subroutine mld_zprecfree(p,info)
      use psb_base_mod
      use mld_prec_type
      type(mld_zprec_type), intent(inout) :: p
      integer, intent(out)                :: info
    end subroutine mld_zprecfree
  end interface

  interface mld_precaply
    subroutine mld_dprec_aply(prec,x,y,desc_data,info,trans,work)
      use psb_base_mod
      use mld_prec_type
      type(psb_desc_type),intent(in)    :: desc_data
      type(mld_dprec_type), intent(in)  :: prec
      real(kind(0.d0)),intent(inout)    :: x(:), y(:)
      integer, intent(out)              :: info
      character(len=1), optional        :: trans
      real(kind(0.d0)),intent(inout), optional, target :: work(:)
    end subroutine mld_dprec_aply
    subroutine mld_dprec_aply1(prec,x,desc_data,info,trans)
      use psb_base_mod
      use mld_prec_type
      type(psb_desc_type),intent(in)    :: desc_data
      type(mld_dprec_type), intent(in)  :: prec
      real(kind(0.d0)),intent(inout)    :: x(:)
      integer, intent(out)              :: info
      character(len=1), optional        :: trans
    end subroutine mld_dprec_aply1
    subroutine mld_zprec_aply(prec,x,y,desc_data,info,trans,work)
      use psb_base_mod
      use mld_prec_type
      type(psb_desc_type),intent(in)    :: desc_data
      type(mld_zprec_type), intent(in)  :: prec
      complex(kind(0.d0)),intent(inout) :: x(:), y(:)
      integer, intent(out)              :: info
      character(len=1), optional        :: trans
      complex(kind(0.d0)),intent(inout), optional, target :: work(:)
    end subroutine mld_zprec_aply
    subroutine mld_zprec_aply1(prec,x,desc_data,info,trans)
      use psb_base_mod
      use mld_prec_type
      type(psb_desc_type),intent(in)    :: desc_data
      type(mld_zprec_type), intent(in)  :: prec
      complex(kind(0.d0)),intent(inout) :: x(:)
      integer, intent(out)              :: info
      character(len=1), optional        :: trans
    end subroutine mld_zprec_aply1
  end interface

  interface mld_baseprc_bld
    subroutine mld_dbaseprc_bld(a,desc_a,p,info,upd)
      use psb_base_mod
      use mld_prec_type
      type(psb_dspmat_type), target              :: a
      type(psb_desc_type), intent(in), target    :: desc_a
      type(mld_dbaseprc_type),intent(inout)      :: p
      integer, intent(out)                       :: info
      character, intent(in), optional            :: upd
    end subroutine mld_dbaseprc_bld
    subroutine mld_zbaseprc_bld(a,desc_a,p,info,upd)
      use psb_base_mod
      use mld_prec_type
      type(psb_zspmat_type), target              :: a
      type(psb_desc_type), intent(in), target    :: desc_a
      type(mld_zbaseprc_type),intent(inout)      :: p
      integer, intent(out)                       :: info
      character, intent(in), optional            :: upd
    end subroutine mld_zbaseprc_bld
  end interface

  interface mld_mlprec_bld
    subroutine mld_dmlprec_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_dspmat_type), intent(inout), target :: a
      type(psb_desc_type), intent(in), target   :: desc_a
      type(mld_dbaseprc_type), intent(inout), target :: p
      integer, intent(out)                      :: info
    end subroutine mld_dmlprec_bld
    subroutine mld_zmlprec_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_zspmat_type), intent(inout), target :: a
      type(psb_desc_type), intent(in), target   :: desc_a
      type(mld_zbaseprc_type), intent(inout),target :: p
      integer, intent(out)                      :: info
    end subroutine mld_zmlprec_bld
  end interface


  interface mld_baseprec_aply
    subroutine mld_dbaseprec_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_desc_type),intent(in)      :: desc_data
      type(mld_dbaseprc_type), intent(in) :: prec
      real(kind(0.d0)),intent(inout)      :: x(:), y(:)
      real(kind(0.d0)),intent(in)         :: alpha,beta
      character(len=1)                    :: trans
      real(kind(0.d0)),target             :: work(:)
      integer, intent(out)                :: info
    end subroutine mld_dbaseprec_aply

    subroutine mld_zbaseprec_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_desc_type),intent(in)      :: desc_data
      type(mld_zbaseprc_type), intent(in) :: prec
      complex(kind(1.d0)),intent(inout)   :: x(:), y(:)
      complex(kind(1.d0)),intent(in)      :: alpha,beta
      character(len=1)                    :: trans
      complex(kind(1.d0)),target          :: work(:)
      integer, intent(out)                :: info
    end subroutine mld_zbaseprec_aply
  end interface

  interface mld_mlprec_aply
     subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
       use psb_base_mod
       use mld_prec_type
       type(psb_desc_type),intent(in)      :: desc_data
       type(mld_dbaseprc_type), intent(in) :: baseprecv(:)
       real(kind(0.d0)),intent(in)         :: alpha,beta
       real(kind(0.d0)),intent(inout)      :: x(:), y(:)
       character                           :: trans
       real(kind(0.d0)),target             :: work(:)
       integer, intent(out)                :: info
     end subroutine mld_dmlprec_aply
     subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
       use psb_base_mod
       use mld_prec_type
       type(psb_desc_type),intent(in)      :: desc_data
       type(mld_zbaseprc_type), intent(in) :: baseprecv(:)
       complex(kind(0.d0)),intent(in)      :: alpha,beta
       complex(kind(0.d0)),intent(inout)   :: x(:), y(:)
       character                           :: trans
       complex(kind(0.d0)),target          :: work(:)
       integer, intent(out)                :: info
     end subroutine mld_zmlprec_aply
  end interface

  interface mld_bjac_aply
     subroutine mld_dbjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
       use psb_base_mod
       use mld_prec_type
       type(psb_desc_type), intent(in)       :: desc_data
       type(mld_dbaseprc_type), intent(in)   :: prec
       real(kind(0.d0)),intent(inout)        :: x(:), y(:)
       real(kind(0.d0)),intent(in)           :: alpha,beta
       character(len=1)                      :: trans
       real(kind(0.d0)),target               :: work(:)
       integer, intent(out)                  :: info
     end subroutine mld_dbjac_aply
     subroutine mld_zbjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
       use psb_base_mod
       use mld_prec_type
       type(psb_desc_type), intent(in)       :: desc_data
       type(mld_zbaseprc_type), intent(in)   :: prec
       complex(kind(0.d0)),intent(inout)        :: x(:), y(:)
       complex(kind(0.d0)),intent(in)           :: alpha,beta
       character(len=1)                      :: trans
       complex(kind(0.d0)),target               :: work(:)
       integer, intent(out)                  :: info
     end subroutine mld_zbjac_aply
  end interface
  

  interface mld_diag_bld
    subroutine mld_ddiag_bld(a,desc_data,p,upd,info)
      use psb_base_mod
      use mld_prec_type
      integer, intent(out) :: info
      type(psb_dspmat_type), intent(in), target :: a
      type(psb_desc_type),intent(in)            :: desc_data
      type(mld_dbaseprc_type), intent(inout)    :: p
      character, intent(in)                     :: upd
    end subroutine mld_ddiag_bld
    subroutine mld_zdiag_bld(a,desc_data,p,upd,info)
      use psb_base_mod
      use mld_prec_type
      integer, intent(out) :: info
      type(psb_zspmat_type), intent(in), target :: a
      type(psb_desc_type),intent(in)            :: desc_data
      type(mld_zbaseprc_type), intent(inout)    :: p
      character, intent(in)                     :: upd
    end subroutine mld_zdiag_bld
  end interface

  interface mld_bjac_bld
    subroutine mld_dbjac_bld(a,desc_data,p,upd,info)
      use psb_base_mod
      use mld_prec_type
      integer, intent(out) :: info
      type(psb_dspmat_type), intent(in), target :: a
      type(psb_desc_type),intent(in)            :: desc_data
      type(mld_dbaseprc_type), intent(inout)    :: p
      character, intent(in)                     :: upd
    end subroutine mld_dbjac_bld
    subroutine mld_zbjac_bld(a,desc_data,p,upd,info)
      use psb_base_mod
      use mld_prec_type
      integer, intent(out) :: info
      type(psb_zspmat_type), intent(in), target :: a
      type(psb_desc_type),intent(in)            :: desc_data
      type(mld_zbaseprc_type), intent(inout)    :: p
      character, intent(in)                     :: upd
    end subroutine mld_zbjac_bld
  end interface

  interface mld_ilu_bld
    subroutine mld_dilu_bld(a,desc_data,p,upd,info,blck)
      use psb_base_mod
      use mld_prec_type
      integer, intent(out) :: info
      type(psb_dspmat_type), intent(in), target :: a
      type(psb_desc_type),intent(in)            :: desc_data
      type(mld_dbaseprc_type), intent(inout)    :: p
      character, intent(in)                     :: upd
      type(psb_dspmat_type), intent(in), optional :: blck
    end subroutine mld_dilu_bld
    subroutine mld_zilu_bld(a,desc_data,p,upd,info,blck)
      use psb_base_mod
      use mld_prec_type
      integer, intent(out) :: info
      type(psb_zspmat_type), intent(in), target :: a
      type(psb_desc_type),intent(in)            :: desc_data
      type(mld_zbaseprc_type), intent(inout)    :: p
      character, intent(in)                     :: upd
      type(psb_zspmat_type), intent(in), optional :: blck
    end subroutine mld_zilu_bld
  end interface

  interface mld_sludist_bld
    subroutine mld_dsludist_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_dspmat_type), intent(inout)   :: a
      type(psb_desc_type), intent(in)        :: desc_a
      type(mld_dbaseprc_type), intent(inout) :: p
      integer, intent(out)                   :: info
    end subroutine mld_dsludist_bld
    subroutine mld_zsludist_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_zspmat_type), intent(inout)   :: a
      type(psb_desc_type), intent(in)        :: desc_a
      type(mld_zbaseprc_type), intent(inout) :: p
      integer, intent(out)                   :: info
    end subroutine mld_zsludist_bld
  end interface

  interface mld_slu_bld
    subroutine mld_dslu_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_dspmat_type), intent(inout)      :: a
      type(psb_desc_type), intent(in)        :: desc_a
      type(mld_dbaseprc_type), intent(inout) :: p
      integer, intent(out)                   :: info
    end subroutine mld_dslu_bld
    subroutine mld_zslu_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_zspmat_type), intent(inout)   :: a
      type(psb_desc_type), intent(in)        :: desc_a
      type(mld_zbaseprc_type), intent(inout) :: p
      integer, intent(out)                   :: info
    end subroutine mld_zslu_bld
  end interface

  interface mld_umf_bld
    subroutine mld_dumf_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_dspmat_type), intent(inout)      :: a
      type(psb_desc_type), intent(in)        :: desc_a
      type(mld_dbaseprc_type), intent(inout) :: p
      integer, intent(out)                   :: info
    end subroutine mld_dumf_bld
    subroutine mld_zumf_bld(a,desc_a,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_zspmat_type), intent(in)      :: a
      type(psb_desc_type), intent(in)        :: desc_a
      type(mld_zbaseprc_type), intent(inout) :: p
      integer, intent(out)                   :: info
    end subroutine mld_zumf_bld
  end interface


  interface mld_ilu_fct
    subroutine mld_dilu_fct(a,l,u,d,info,blck)
      use psb_base_mod
      integer, intent(out)                ::     info
      type(psb_dspmat_type),intent(in)    :: a
      type(psb_dspmat_type),intent(inout) :: l,u
      type(psb_dspmat_type),intent(in), optional, target :: blck
      real(kind(1.d0)), intent(inout)     ::  d(:)
    end subroutine mld_dilu_fct
    subroutine mld_zilu_fct(a,l,u,d,info,blck)
      use psb_base_mod
      integer, intent(out)                ::     info
      type(psb_zspmat_type),intent(in)    :: a
      type(psb_zspmat_type),intent(inout) :: l,u
      type(psb_zspmat_type),intent(in), optional, target :: blck
      complex(kind(1.d0)), intent(inout)     ::  d(:)
    end subroutine mld_zilu_fct
  end interface

  interface mld_asmat_bld
    Subroutine mld_dasmat_bld(ptype,novr,a,blk,desc_data,upd,desc_p,info,outfmt)
      use psb_base_mod
      use mld_prec_type
      integer, intent(in)                  :: ptype,novr
      Type(psb_dspmat_type), Intent(in)    ::  a
      Type(psb_dspmat_type), Intent(inout) ::  blk
      Type(psb_desc_type), Intent(inout)   :: desc_p
      Type(psb_desc_type), Intent(in)      :: desc_data 
      Character, Intent(in)                :: upd
      integer, intent(out)                 :: info
      character(len=5), optional           :: outfmt
    end Subroutine mld_dasmat_bld
    Subroutine mld_zasmat_bld(ptype,novr,a,blk,desc_data,upd,desc_p,info,outfmt)
      use psb_base_mod
      use mld_prec_type
      integer, intent(in)                  :: ptype,novr
      Type(psb_zspmat_type), Intent(in)    ::  a
      Type(psb_zspmat_type), Intent(inout) ::  blk
      Type(psb_desc_type), Intent(inout)   :: desc_p
      Type(psb_desc_type), Intent(in)      :: desc_data 
      Character, Intent(in)                :: upd
      integer, intent(out)                 :: info
      character(len=5), optional           :: outfmt
    end Subroutine mld_zasmat_bld
  end interface

  interface mld_sp_renum
    subroutine mld_dsp_renum(a,desc_a,blck,p,atmp,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_dspmat_type), intent(in)      :: a,blck
      type(psb_dspmat_type), intent(inout)   :: atmp
      type(mld_dbaseprc_type), intent(inout) :: p
      type(psb_desc_type), intent(in)        :: desc_a
      integer, intent(out)   :: info
    end subroutine mld_dsp_renum
    subroutine mld_zsp_renum(a,desc_a,blck,p,atmp,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_zspmat_type), intent(in)      :: a,blck
      type(psb_zspmat_type), intent(inout)   :: atmp
      type(mld_zbaseprc_type), intent(inout) :: p
      type(psb_desc_type), intent(in)        :: desc_a
      integer, intent(out)   :: info
    end subroutine mld_zsp_renum
  end interface


  interface mld_aggrmap_bld
    subroutine mld_daggrmap_bld(aggr_type,a,desc_a,nlaggr,ilaggr,info)
      use psb_base_mod
      use mld_prec_type
      integer, intent(in)               :: aggr_type
      type(psb_dspmat_type), intent(in) :: a
      type(psb_desc_type), intent(in)   :: desc_a
      integer, allocatable              :: ilaggr(:),nlaggr(:)
      integer, intent(out)              :: info
    end subroutine mld_daggrmap_bld
    subroutine mld_zaggrmap_bld(aggr_type,a,desc_a,nlaggr,ilaggr,info)
      use psb_base_mod
      use mld_prec_type
      integer, intent(in)               :: aggr_type
      type(psb_zspmat_type), intent(in) :: a
      type(psb_desc_type), intent(in)   :: desc_a
      integer, allocatable              :: ilaggr(:),nlaggr(:)
      integer, intent(out)              :: info
    end subroutine mld_zaggrmap_bld
  end interface

  interface mld_aggrmat_asb
    subroutine mld_daggrmat_asb(a,desc_a,ac,desc_ac,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_dspmat_type), intent(in), target :: a
      type(psb_desc_type), intent(in)           :: desc_a
      type(psb_dspmat_type), intent(inout),target :: ac
      type(psb_desc_type), intent(inout)        :: desc_ac
      type(mld_dbaseprc_type), intent(inout), target :: p
      integer, intent(out)                      :: info
    end subroutine mld_daggrmat_asb
    subroutine mld_zaggrmat_asb(a,desc_a,ac,desc_ac,p,info)
      use psb_base_mod
      use mld_prec_type
      type(psb_zspmat_type), intent(in), target :: a
      type(mld_zbaseprc_type), intent(inout),target    :: p
      type(psb_zspmat_type), intent(inout),target :: ac
      type(psb_desc_type), intent(in)           :: desc_a
      type(psb_desc_type), intent(inout)        :: desc_ac
      integer, intent(out)                      :: info
    end subroutine mld_zaggrmat_asb
  end interface

end module mld_prec_mod