You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
270 lines
7.8 KiB
Fortran
270 lines
7.8 KiB
Fortran
module psb_s_diagprec
|
|
|
|
use psb_s_base_prec_mod
|
|
|
|
type, extends(psb_s_base_prec_type) :: psb_s_diag_prec_type
|
|
real(psb_spk_), allocatable :: d(:)
|
|
type(psb_s_vect_type), allocatable :: dv
|
|
contains
|
|
procedure, pass(prec) :: s_apply_v => psb_s_diag_apply_vect
|
|
procedure, pass(prec) :: s_apply => psb_s_diag_apply
|
|
procedure, pass(prec) :: precbld => psb_s_diag_precbld
|
|
procedure, pass(prec) :: precinit => psb_s_diag_precinit
|
|
procedure, pass(prec) :: precseti => psb_s_diag_precseti
|
|
procedure, pass(prec) :: precsetr => psb_s_diag_precsetr
|
|
procedure, pass(prec) :: precsetc => psb_s_diag_precsetc
|
|
procedure, pass(prec) :: precfree => psb_s_diag_precfree
|
|
procedure, pass(prec) :: precdescr => psb_s_diag_precdescr
|
|
procedure, pass(prec) :: sizeof => psb_s_diag_sizeof
|
|
procedure, pass(prec) :: get_nzeros => psb_s_diag_get_nzeros
|
|
end type psb_s_diag_prec_type
|
|
|
|
private :: psb_s_diag_precseti,&
|
|
& psb_s_diag_precsetr, psb_s_diag_precsetc, psb_s_diag_sizeof,&
|
|
& psb_s_diag_precinit, psb_s_diag_precfree, psb_s_diag_precdescr,&
|
|
& psb_s_diag_get_nzeros
|
|
|
|
|
|
|
|
interface
|
|
subroutine psb_s_diag_apply_vect(alpha,prec,x,beta,y,desc_data,info,trans,work)
|
|
import :: psb_ipk_, psb_desc_type, psb_s_diag_prec_type, psb_s_vect_type, psb_spk_
|
|
type(psb_desc_type),intent(in) :: desc_data
|
|
class(psb_s_diag_prec_type), intent(inout) :: prec
|
|
type(psb_s_vect_type),intent(inout) :: x
|
|
real(psb_spk_),intent(in) :: alpha, beta
|
|
type(psb_s_vect_type),intent(inout) :: y
|
|
integer(psb_ipk_), intent(out) :: info
|
|
character(len=1), optional :: trans
|
|
real(psb_spk_),intent(inout), optional, target :: work(:)
|
|
end subroutine psb_s_diag_apply_vect
|
|
end interface
|
|
|
|
interface
|
|
subroutine psb_s_diag_apply(alpha,prec,x,beta,y,desc_data,info,trans,work)
|
|
import :: psb_ipk_, psb_desc_type, psb_s_diag_prec_type, psb_s_vect_type, psb_spk_
|
|
type(psb_desc_type),intent(in) :: desc_data
|
|
class(psb_s_diag_prec_type), intent(in) :: prec
|
|
real(psb_spk_),intent(inout) :: x(:)
|
|
real(psb_spk_),intent(in) :: alpha, beta
|
|
real(psb_spk_),intent(inout) :: y(:)
|
|
integer(psb_ipk_), intent(out) :: info
|
|
character(len=1), optional :: trans
|
|
real(psb_spk_),intent(inout), optional, target :: work(:)
|
|
end subroutine psb_s_diag_apply
|
|
end interface
|
|
|
|
interface
|
|
subroutine psb_s_diag_precbld(a,desc_a,prec,info,upd,amold,afmt,vmold)
|
|
import :: psb_ipk_, psb_desc_type, psb_s_diag_prec_type, psb_s_vect_type, psb_spk_, &
|
|
& psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type
|
|
type(psb_sspmat_type), intent(in), target :: a
|
|
type(psb_desc_type), intent(in), target :: desc_a
|
|
class(psb_s_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_s_base_sparse_mat), intent(in), optional :: amold
|
|
class(psb_s_base_vect_type), intent(in), optional :: vmold
|
|
end subroutine psb_s_diag_precbld
|
|
end interface
|
|
|
|
|
|
contains
|
|
|
|
|
|
subroutine psb_s_diag_precinit(prec,info)
|
|
Implicit None
|
|
|
|
class(psb_s_diag_prec_type),intent(inout) :: prec
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_) :: err_act, nrow
|
|
character(len=20) :: name='s_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_s_diag_precinit
|
|
|
|
|
|
subroutine psb_s_diag_precseti(prec,what,val,info)
|
|
Implicit None
|
|
|
|
class(psb_s_diag_prec_type),intent(inout) :: prec
|
|
integer(psb_ipk_), intent(in) :: what
|
|
integer(psb_ipk_), intent(in) :: val
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_) :: err_act, nrow
|
|
character(len=20) :: name='s_diag_precset'
|
|
|
|
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_s_diag_precseti
|
|
|
|
subroutine psb_s_diag_precsetr(prec,what,val,info)
|
|
|
|
Implicit None
|
|
|
|
class(psb_s_diag_prec_type),intent(inout) :: prec
|
|
integer(psb_ipk_), intent(in) :: what
|
|
real(psb_spk_), intent(in) :: val
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_) :: err_act, nrow
|
|
character(len=20) :: name='s_diag_precset'
|
|
|
|
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_s_diag_precsetr
|
|
|
|
subroutine psb_s_diag_precsetc(prec,what,val,info)
|
|
Implicit None
|
|
|
|
class(psb_s_diag_prec_type),intent(inout) :: prec
|
|
integer(psb_ipk_), intent(in) :: what
|
|
character(len=*), intent(in) :: val
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_) :: err_act, nrow
|
|
character(len=20) :: name='s_diag_precset'
|
|
|
|
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_s_diag_precsetc
|
|
|
|
subroutine psb_s_diag_precfree(prec,info)
|
|
|
|
Implicit None
|
|
|
|
class(psb_s_diag_prec_type), intent(inout) :: prec
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
integer(psb_ipk_) :: err_act, nrow
|
|
character(len=20) :: name='s_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_s_diag_precfree
|
|
|
|
|
|
subroutine psb_s_diag_precdescr(prec,iout)
|
|
Implicit None
|
|
|
|
class(psb_s_diag_prec_type), intent(in) :: prec
|
|
integer(psb_ipk_), intent(in), optional :: iout
|
|
|
|
integer(psb_ipk_) :: err_act, nrow, info
|
|
character(len=20) :: name='s_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_s_diag_precdescr
|
|
|
|
function psb_s_diag_sizeof(prec) result(val)
|
|
class(psb_s_diag_prec_type), intent(in) :: prec
|
|
integer(psb_long_int_k_) :: val
|
|
|
|
val = psb_sizeof_sp * prec%get_nzeros()
|
|
return
|
|
end function psb_s_diag_sizeof
|
|
|
|
function psb_s_diag_get_nzeros(prec) result(val)
|
|
class(psb_s_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_s_diag_get_nzeros
|
|
|
|
|
|
end module psb_s_diagprec
|