!!$
!!$
!!$ MLD2P4 version 2.0
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
!!$
!!$ (C) Copyright 2008,2009,2010,2012,2013
!!$
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
!!$ Pasqua D'Ambra ICAR-CNR, Naples
!!$ Daniela di Serafino Second University of Naples
!!$
!!$ 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 MLD2P4 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
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!!$
!!$
!
!
!
! Identity solver. Reference for nullprec.
!
!
module mld_d_id_solver
use mld_d_base_solver_mod
type, extends(mld_d_base_solver_type) :: mld_d_id_solver_type
contains
procedure, pass(sv) :: build => d_id_solver_bld
procedure, pass(sv) :: clone => mld_d_id_solver_clone
procedure, pass(sv) :: apply_v => mld_d_id_solver_apply_vect
procedure, pass(sv) :: apply_a => mld_d_id_solver_apply
procedure, pass(sv) :: free => d_id_solver_free
procedure, pass(sv) :: descr => d_id_solver_descr
procedure, nopass :: get_fmt => d_id_solver_get_fmt
end type mld_d_id_solver_type
private :: d_id_solver_bld, &
& d_id_solver_free, d_id_solver_get_fmt, &
& d_id_solver_descr
interface
subroutine mld_d_id_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,work,info)
import :: psb_desc_type, psb_dspmat_type, psb_d_base_sparse_mat, &
& psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
& mld_d_id_solver_type, psb_ipk_
type(psb_desc_type), intent(in) :: desc_data
class(mld_d_id_solver_type), intent(inout) :: sv
type(psb_d_vect_type),intent(inout) :: x
type(psb_d_vect_type),intent(inout) :: y
real(psb_dpk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
real(psb_dpk_),target, intent(inout) :: work(:)
integer(psb_ipk_), intent(out) :: info
end subroutine mld_d_id_solver_apply_vect
end interface
interface
subroutine mld_d_id_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info)
import :: psb_desc_type, psb_dspmat_type, psb_d_base_sparse_mat, &
& psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
& mld_d_id_solver_type, psb_ipk_
type(psb_desc_type), intent(in) :: desc_data
class(mld_d_id_solver_type), intent(inout) :: sv
real(psb_dpk_),intent(inout) :: x(:)
real(psb_dpk_),intent(inout) :: y(:)
real(psb_dpk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
real(psb_dpk_),target, intent(inout) :: work(:)
integer(psb_ipk_), intent(out) :: info
end subroutine mld_d_id_solver_apply
end interface
interface
subroutine mld_d_id_solver_clone(sv,svout,info)
import :: psb_desc_type, psb_dspmat_type, psb_d_base_sparse_mat, &
& psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
& mld_d_base_solver_type, mld_d_id_solver_type, psb_ipk_
Implicit None
! Arguments
class(mld_d_id_solver_type), intent(inout) :: sv
class(mld_d_base_solver_type), allocatable, intent(inout) :: svout
integer(psb_ipk_), intent(out) :: info
end subroutine mld_d_id_solver_clone
end interface
contains
subroutine d_id_solver_bld(a,desc_a,sv,upd,info,b,amold,vmold,imold)
Implicit None
! Arguments
type(psb_dspmat_type), intent(in), target :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(mld_d_id_solver_type), intent(inout) :: sv
character, intent(in) :: upd
integer(psb_ipk_), intent(out) :: info
type(psb_dspmat_type), intent(in), target, optional :: b
class(psb_d_base_sparse_mat), intent(in), optional :: amold
class(psb_d_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
! Local variables
integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
real(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:)
integer(psb_ipk_) :: i, err_act, debug_unit, debug_level
character(len=20) :: name='d_id_solver_bld', ch_err
info=psb_success_
return
end subroutine d_id_solver_bld
subroutine d_id_solver_free(sv,info)
Implicit None
! Arguments
class(mld_d_id_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='d_id_solver_free'
info = psb_success_
return
end subroutine d_id_solver_free
subroutine d_id_solver_descr(sv,info,iout,coarse)
Implicit None
! Arguments
class(mld_d_id_solver_type), intent(in) :: sv
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iout
logical, intent(in), optional :: coarse
! Local variables
integer(psb_ipk_) :: err_act
character(len=20), parameter :: name='mld_d_id_solver_descr'
integer(psb_ipk_) :: iout_
info = psb_success_
if (present(iout)) then
iout_ = iout
else
iout_ = 6
endif
write(iout_,*) ' Identity local solver '
return
end subroutine d_id_solver_descr
function d_id_solver_get_fmt() result(val)
implicit none
character(len=32) :: val
val = "Identity solver"
end function d_id_solver_get_fmt
end module mld_d_id_solver