!!$ !!$ Parallel Sparse BLAS version 3.1 !!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013 !!$ Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari CNRS-IRIT, Toulouse !!$ !!$ 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 PSBLAS 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 PSBLAS 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_d_diagprec use psb_d_base_prec_mod type, extends(psb_d_base_prec_type) :: psb_d_diag_prec_type real(psb_dpk_), allocatable :: d(:) type(psb_d_vect_type), allocatable :: dv contains procedure, pass(prec) :: d_apply_v => psb_d_diag_apply_vect procedure, pass(prec) :: d_apply => psb_d_diag_apply procedure, pass(prec) :: precbld => psb_d_diag_precbld procedure, pass(prec) :: precinit => psb_d_diag_precinit procedure, pass(prec) :: precdescr => psb_d_diag_precdescr procedure, pass(prec) :: sizeof => psb_d_diag_sizeof procedure, pass(prec) :: dump => psb_d_diag_dump procedure, pass(prec) :: clone => psb_d_diag_clone procedure, pass(prec) :: free => psb_d_diag_precfree procedure, pass(prec) :: get_nzeros => psb_d_diag_get_nzeros end type psb_d_diag_prec_type private :: psb_d_diag_sizeof,& & psb_d_diag_precinit, psb_d_diag_precfree, psb_d_diag_precdescr,& & psb_d_diag_get_nzeros interface subroutine psb_d_diag_apply_vect(alpha,prec,x,beta,y,desc_data,info,trans,work) import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_ type(psb_desc_type),intent(in) :: desc_data class(psb_d_diag_prec_type), intent(inout) :: prec type(psb_d_vect_type),intent(inout) :: x real(psb_dpk_),intent(in) :: alpha, beta type(psb_d_vect_type),intent(inout) :: y integer(psb_ipk_), intent(out) :: info character(len=1), optional :: trans real(psb_dpk_),intent(inout), optional, target :: work(:) end subroutine psb_d_diag_apply_vect end interface interface subroutine psb_d_diag_apply(alpha,prec,x,beta,y,desc_data,info,trans,work) import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_ type(psb_desc_type),intent(in) :: desc_data class(psb_d_diag_prec_type), intent(in) :: prec real(psb_dpk_),intent(inout) :: x(:) real(psb_dpk_),intent(in) :: alpha, beta real(psb_dpk_),intent(inout) :: y(:) integer(psb_ipk_), intent(out) :: info character(len=1), optional :: trans real(psb_dpk_),intent(inout), optional, target :: work(:) end subroutine psb_d_diag_apply end interface interface subroutine psb_d_diag_precbld(a,desc_a,prec,info,upd,amold,afmt,vmold) import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_, & & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type type(psb_dspmat_type), intent(in), target :: a type(psb_desc_type), intent(in), target :: desc_a class(psb_d_diag_prec_type),intent(inout) :: prec integer(psb_ipk_), intent(out) :: info character, intent(in), optional :: upd character(len=*), intent(in), optional :: afmt class(psb_d_base_sparse_mat), intent(in), optional :: amold class(psb_d_base_vect_type), intent(in), optional :: vmold end subroutine psb_d_diag_precbld end interface interface subroutine psb_d_diag_dump(prec,info,prefix,head) import :: psb_ipk_, psb_desc_type, psb_d_diag_prec_type, psb_d_vect_type, psb_dpk_ implicit none class(psb_d_diag_prec_type), intent(in) :: prec integer(psb_ipk_), intent(out) :: info character(len=*), intent(in), optional :: prefix,head end subroutine psb_d_diag_dump end interface contains subroutine psb_d_diag_precinit(prec,info) Implicit None class(psb_d_diag_prec_type),intent(inout) :: prec integer(psb_ipk_), intent(out) :: info integer(psb_ipk_) :: err_act, nrow character(len=20) :: name='d_diag_precinit' call psb_erractionsave(err_act) info = psb_success_ call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error() return end if return end subroutine psb_d_diag_precinit subroutine psb_d_diag_precfree(prec,info) Implicit None class(psb_d_diag_prec_type), intent(inout) :: prec integer(psb_ipk_), intent(out) :: info integer(psb_ipk_) :: err_act, nrow character(len=20) :: name='d_diag_precset' call psb_erractionsave(err_act) info = psb_success_ if (allocated(prec%dv)) call prec%dv%free(info) call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error() return end if return end subroutine psb_d_diag_precfree subroutine psb_d_diag_precdescr(prec,iout) Implicit None class(psb_d_diag_prec_type), intent(in) :: prec integer(psb_ipk_), intent(in), optional :: iout integer(psb_ipk_) :: err_act, nrow, info character(len=20) :: name='d_diag_precdescr' integer(psb_ipk_) :: iout_ call psb_erractionsave(err_act) info = psb_success_ if (present(iout)) then iout_ = iout else iout_ = 6 end if write(iout_,*) 'Diagonal scaling' call psb_erractionsave(err_act) info = psb_success_ call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error() return end if return end subroutine psb_d_diag_precdescr function psb_d_diag_sizeof(prec) result(val) class(psb_d_diag_prec_type), intent(in) :: prec integer(psb_long_int_k_) :: val val = psb_sizeof_dp * prec%get_nzeros() return end function psb_d_diag_sizeof function psb_d_diag_get_nzeros(prec) result(val) class(psb_d_diag_prec_type), intent(in) :: prec integer(psb_long_int_k_) :: val val = 0 if (allocated(prec%dv)) val = val + prec%dv%get_nrows() return end function psb_d_diag_get_nzeros subroutine psb_d_diag_clone(prec,precout,info) use psb_error_mod use psb_realloc_mod Implicit None class(psb_d_diag_prec_type), intent(inout) :: prec class(psb_d_base_prec_type), allocatable, intent(inout) :: precout integer(psb_ipk_), intent(out) :: info integer(psb_ipk_) :: err_act, i character(len=20) :: name='d_diag_clone' call psb_erractionsave(err_act) info = psb_success_ if (allocated(precout)) then call precout%free(info) if (info == psb_success_) deallocate(precout, stat=info) end if if (info == psb_success_) & & allocate(psb_d_diag_prec_type :: precout, stat=info) if (info /= 0) goto 9999 select type(pout => precout) type is (psb_d_diag_prec_type) call pout%set_ctxt(prec%get_ctxt()) if (allocated(prec%dv)) then allocate(pout%dv,stat=info) if (info == 0) call prec%dv%clone(pout%dv,info) end if if (info == 0) call psb_safe_ab_cpy(prec%d,pout%d,info) class default info = psb_err_internal_error_ end select if (info /= 0) goto 9999 call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error() return end if return end subroutine psb_d_diag_clone end module psb_d_diagprec