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270 lines
7.8 KiB
Fortran
270 lines
7.8 KiB
Fortran
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) :: precseti => psb_d_diag_precseti
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procedure, pass(prec) :: precsetr => psb_d_diag_precsetr
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procedure, pass(prec) :: precsetc => psb_d_diag_precsetc
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procedure, pass(prec) :: precfree => psb_d_diag_precfree
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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) :: 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_precseti,&
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& psb_d_diag_precsetr, psb_d_diag_precsetc, 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(in) :: 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,upd,amold,afmt,vmold)
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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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type(psb_dspmat_type), intent(in), target :: a
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type(psb_desc_type), intent(in), 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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character, intent(in), optional :: upd
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character(len=*), intent(in), optional :: afmt
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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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end subroutine psb_d_diag_precbld
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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 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_d_diag_precinit
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subroutine psb_d_diag_precseti(prec,what,val,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(in) :: what
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integer(psb_ipk_), intent(in) :: val
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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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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_d_diag_precseti
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subroutine psb_d_diag_precsetr(prec,what,val,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(in) :: what
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real(psb_dpk_), intent(in) :: val
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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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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_d_diag_precsetr
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subroutine psb_d_diag_precsetc(prec,what,val,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(in) :: what
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character(len=*), intent(in) :: val
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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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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_d_diag_precsetc
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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 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_d_diag_precfree
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subroutine psb_d_diag_precdescr(prec,iout)
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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_) :: err_act, nrow, info
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character(len=20) :: name='d_diag_precdescr'
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integer(psb_ipk_) :: iout_
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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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write(iout_,*) 'Diagonal scaling'
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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 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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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_long_int_k_) :: 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_long_int_k_) :: 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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end module psb_d_diagprec
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