!!$ !!$ !!$ 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 !!$ ``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 MLD2P4 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. !!$ !!$ ! ! ! ! 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