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302 lines
9.5 KiB
Fortran
302 lines
9.5 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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module psb_d_diagprec
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use psb_d_base_prec_mod
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type, extends(psb_d_base_prec_type) :: psb_d_diag_prec_type
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real(psb_dpk_), allocatable :: d(:)
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type(psb_d_vect_type), allocatable :: dv
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contains
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procedure, pass(prec) :: d_apply_v => psb_d_diag_apply_vect
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procedure, pass(prec) :: d_apply => psb_d_diag_apply
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procedure, pass(prec) :: precbld => psb_d_diag_precbld
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procedure, pass(prec) :: precinit => psb_d_diag_precinit
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procedure, pass(prec) :: precdescr => psb_d_diag_precdescr
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procedure, pass(prec) :: sizeof => psb_d_diag_sizeof
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procedure, pass(prec) :: dump => psb_d_diag_dump
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procedure, pass(prec) :: clone => psb_d_diag_clone
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procedure, pass(prec) :: free => psb_d_diag_precfree
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procedure, pass(prec) :: get_nzeros => psb_d_diag_get_nzeros
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end type psb_d_diag_prec_type
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private :: psb_d_diag_sizeof,&
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& psb_d_diag_precinit, psb_d_diag_precfree, psb_d_diag_precdescr,&
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& psb_d_diag_get_nzeros
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interface
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subroutine psb_d_diag_apply_vect(alpha,prec,x,beta,y,desc_data,info,trans,work)
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import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_
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type(psb_desc_type),intent(in) :: desc_data
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class(psb_d_diag_prec_type), intent(inout) :: prec
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type(psb_d_vect_type),intent(inout) :: x
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real(psb_dpk_),intent(in) :: alpha, beta
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type(psb_d_vect_type),intent(inout) :: y
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integer(psb_ipk_), intent(out) :: info
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character(len=1), optional :: trans
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real(psb_dpk_),intent(inout), optional, target :: work(:)
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end subroutine psb_d_diag_apply_vect
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end interface
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interface
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subroutine psb_d_diag_apply(alpha,prec,x,beta,y,desc_data,info,trans,work)
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import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_
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type(psb_desc_type),intent(in) :: desc_data
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class(psb_d_diag_prec_type), intent(inout) :: prec
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real(psb_dpk_),intent(inout) :: x(:)
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real(psb_dpk_),intent(in) :: alpha, beta
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real(psb_dpk_),intent(inout) :: y(:)
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integer(psb_ipk_), intent(out) :: info
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character(len=1), optional :: trans
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real(psb_dpk_),intent(inout), optional, target :: work(:)
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end subroutine psb_d_diag_apply
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end interface
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interface
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subroutine psb_d_diag_precbld(a,desc_a,prec,info,amold,vmold,imold)
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import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_, &
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& psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, &
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& psb_i_base_vect_type
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type(psb_dspmat_type), intent(in), target :: a
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type(psb_desc_type), intent(inout), target :: desc_a
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class(psb_d_diag_prec_type),intent(inout) :: prec
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integer(psb_ipk_), intent(out) :: info
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class(psb_d_base_sparse_mat), intent(in), optional :: amold
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class(psb_d_base_vect_type), intent(in), optional :: vmold
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class(psb_i_base_vect_type), intent(in), optional :: imold
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end subroutine psb_d_diag_precbld
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end interface
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interface
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subroutine psb_d_diag_dump(prec,info,prefix,head)
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import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_
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implicit none
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class(psb_d_diag_prec_type), intent(in) :: prec
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integer(psb_ipk_), intent(out) :: info
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character(len=*), intent(in), optional :: prefix,head
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end subroutine psb_d_diag_dump
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end interface
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contains
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subroutine psb_d_diag_precinit(prec,info)
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Implicit None
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class(psb_d_diag_prec_type),intent(inout) :: prec
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act, nrow
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character(len=20) :: name='d_diag_precinit'
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call psb_erractionsave(err_act)
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info = psb_success_
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine psb_d_diag_precinit
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subroutine psb_d_diag_precfree(prec,info)
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Implicit None
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class(psb_d_diag_prec_type), intent(inout) :: prec
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act, nrow
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character(len=20) :: name='d_diag_precset'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(prec%dv)) call prec%dv%free(info)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine psb_d_diag_precfree
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!
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!
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! verbosity:
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! <0: suppress all messages
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! 0: normal
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! >1: increased details
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!
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subroutine psb_d_diag_precdescr(prec,iout,root, verbosity,prefix)
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use psb_penv_mod
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use psb_error_mod
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Implicit None
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class(psb_d_diag_prec_type), intent(in) :: prec
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integer(psb_ipk_), intent(in), optional :: iout
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integer(psb_ipk_), intent(in), optional :: root
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integer(psb_ipk_), intent(in), optional :: verbosity
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character(len=*), intent(in), optional :: prefix
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integer(psb_ipk_) :: err_act, nrow, info
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character(len=20) :: name='d_diag_precdescr'
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type(psb_ctxt_type) :: ctxt
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integer(psb_ipk_) :: iout_, iam, np, root_, verbosity_
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character(1024) :: prefix_
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call psb_erractionsave(err_act)
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info = psb_success_
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if (present(iout)) then
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iout_ = iout
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else
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iout_ = 6
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end if
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if (present(root)) then
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root_ = root
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else
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root_ = psb_root_
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end if
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if (present(verbosity)) then
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verbosity_ = verbosity
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else
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verbosity_ = 0
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end if
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if (present(prefix)) then
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prefix_ = prefix
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else
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prefix_ = ""
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end if
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if (verbosity_ < 0) goto 9998
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ctxt = prec%ctxt
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call psb_info(ctxt,iam,np)
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if (root_ == -1) root_ = iam
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if (iam == root_) &
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& write(iout_,*) trim(prefix_),' ', trim(prec%desc_prefix()),' ',&
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& 'Diagonal scaling'
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call psb_erractionsave(err_act)
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info = psb_success_
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9998 continue
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine psb_d_diag_precdescr
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function psb_d_diag_sizeof(prec) result(val)
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class(psb_d_diag_prec_type), intent(in) :: prec
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integer(psb_epk_) :: val
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val = psb_sizeof_dp * prec%get_nzeros()
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return
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end function psb_d_diag_sizeof
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function psb_d_diag_get_nzeros(prec) result(val)
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class(psb_d_diag_prec_type), intent(in) :: prec
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integer(psb_epk_) :: val
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val = 0
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if (allocated(prec%dv)) val = val + prec%dv%get_nrows()
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return
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end function psb_d_diag_get_nzeros
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subroutine psb_d_diag_clone(prec,precout,info)
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use psb_error_mod
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use psb_realloc_mod
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Implicit None
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class(psb_d_diag_prec_type), intent(inout) :: prec
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class(psb_d_base_prec_type), allocatable, intent(inout) :: precout
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act, i
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character(len=20) :: name='d_diag_clone'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(precout)) then
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call precout%free(info)
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if (info == psb_success_) deallocate(precout, stat=info)
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end if
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if (info == psb_success_) &
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& allocate(psb_d_diag_prec_type :: precout, stat=info)
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if (info /= 0) goto 9999
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select type(pout => precout)
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type is (psb_d_diag_prec_type)
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call pout%set_ctxt(prec%get_ctxt())
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if (allocated(prec%dv)) then
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allocate(pout%dv,stat=info)
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if (info == 0) call prec%dv%clone(pout%dv,info)
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end if
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if (info == 0) call psb_safe_ab_cpy(prec%d,pout%d,info)
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class default
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info = psb_err_internal_error_
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end select
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if (info /= 0) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine psb_d_diag_clone
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end module psb_d_diagprec
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