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psblas3/prec/psb_s_nullprec.f90

271 lines
7.3 KiB
Fortran

module psb_s_nullprec
use psb_s_base_prec_mod
type, extends(psb_s_base_prec_type) :: psb_s_null_prec_type
contains
procedure, pass(prec) :: c_apply_v => psb_s_null_apply_vect
procedure, pass(prec) :: c_apply => psb_s_null_apply
procedure, pass(prec) :: precbld => psb_s_null_precbld
procedure, pass(prec) :: precinit => psb_s_null_precinit
procedure, pass(prec) :: precseti => psb_s_null_precseti
procedure, pass(prec) :: precsetr => psb_s_null_precsetr
procedure, pass(prec) :: precsetc => psb_s_null_precsetc
procedure, pass(prec) :: precfree => psb_s_null_precfree
procedure, pass(prec) :: precdescr => psb_s_null_precdescr
procedure, pass(prec) :: sizeof => psb_s_null_sizeof
end type psb_s_null_prec_type
private :: psb_s_null_precbld, psb_s_null_precseti,&
& psb_s_null_precsetr, psb_s_null_precsetc, psb_s_null_sizeof,&
& psb_s_null_precinit, psb_s_null_precfree, psb_s_null_precdescr
interface psb_s_null_apply_vect
subroutine psb_s_null_apply_vect(alpha,prec,x,beta,y,desc_data,info,trans,work)
import :: psb_desc_type, psb_s_null_prec_type, psb_s_vect_type, psb_spk_
type(psb_desc_type),intent(in) :: desc_data
class(psb_s_null_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, intent(out) :: info
character(len=1), optional :: trans
real(psb_spk_),intent(inout), optional, target :: work(:)
end subroutine psb_s_null_apply_vect
end interface psb_s_null_apply_vect
interface psb_s_null_apply
subroutine psb_s_null_apply(alpha,prec,x,beta,y,desc_data,info,trans,work)
import :: psb_desc_type, psb_s_null_prec_type, psb_spk_
type(psb_desc_type),intent(in) :: desc_data
class(psb_s_null_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, intent(out) :: info
character(len=1), optional :: trans
real(psb_spk_),intent(inout), optional, target :: work(:)
end subroutine psb_s_null_apply
end interface psb_s_null_apply
contains
subroutine psb_s_null_precinit(prec,info)
Implicit None
class(psb_s_null_prec_type),intent(inout) :: prec
integer, intent(out) :: info
Integer :: err_act, nrow
character(len=20) :: name='s_null_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_null_precinit
subroutine psb_s_null_precbld(a,desc_a,prec,info,upd,amold,afmt,vmold)
Implicit None
type(psb_sspmat_type), intent(in), target :: a
type(psb_desc_type), intent(in), target :: desc_a
class(psb_s_null_prec_type),intent(inout) :: prec
integer, 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
Integer :: err_act, nrow
character(len=20) :: name='s_null_precbld'
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_null_precbld
subroutine psb_s_null_precseti(prec,what,val,info)
Implicit None
class(psb_s_null_prec_type),intent(inout) :: prec
integer, intent(in) :: what
integer, intent(in) :: val
integer, intent(out) :: info
Integer :: err_act, nrow
character(len=20) :: name='s_null_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_null_precseti
subroutine psb_s_null_precsetr(prec,what,val,info)
Implicit None
class(psb_s_null_prec_type),intent(inout) :: prec
integer, intent(in) :: what
real(psb_spk_), intent(in) :: val
integer, intent(out) :: info
Integer :: err_act, nrow
character(len=20) :: name='s_null_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_null_precsetr
subroutine psb_s_null_precsetc(prec,what,val,info)
Implicit None
class(psb_s_null_prec_type),intent(inout) :: prec
integer, intent(in) :: what
character(len=*), intent(in) :: val
integer, intent(out) :: info
Integer :: err_act, nrow
character(len=20) :: name='s_null_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_null_precsetc
subroutine psb_s_null_precfree(prec,info)
Implicit None
class(psb_s_null_prec_type), intent(inout) :: prec
integer, intent(out) :: info
Integer :: err_act, nrow
character(len=20) :: name='s_null_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_null_precfree
subroutine psb_s_null_precdescr(prec,iout)
Implicit None
class(psb_s_null_prec_type), intent(in) :: prec
integer, intent(in), optional :: iout
Integer :: err_act, nrow, info
character(len=20) :: name='s_null_precset'
integer :: iout_
call psb_erractionsave(err_act)
info = psb_success_
if (present(iout)) then
iout_ = iout
else
iout_ = 6
end if
write(iout_,*) 'No preconditioning'
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_null_precdescr
function psb_s_null_sizeof(prec) result(val)
class(psb_s_null_prec_type), intent(in) :: prec
integer(psb_long_int_k_) :: val
val = 0
return
end function psb_s_null_sizeof
end module psb_s_nullprec