module psb_d_nullprec use psb_d_base_prec_mod type, extends(psb_d_base_prec_type) :: psb_d_null_prec_type contains procedure, pass(prec) :: apply => psb_d_null_apply procedure, pass(prec) :: precbld => psb_d_null_precbld procedure, pass(prec) :: precinit => psb_d_null_precinit procedure, pass(prec) :: precseti => psb_d_null_precseti procedure, pass(prec) :: precsetr => psb_d_null_precsetr procedure, pass(prec) :: precsetc => psb_d_null_precsetc procedure, pass(prec) :: precfree => psb_d_null_precfree procedure, pass(prec) :: precdescr => psb_d_null_precdescr procedure, pass(prec) :: sizeof => psb_d_null_sizeof end type psb_d_null_prec_type private :: psb_d_null_apply, psb_d_null_precbld, psb_d_null_precseti,& & psb_d_null_precsetr, psb_d_null_precsetc, psb_d_null_sizeof,& & psb_d_null_precinit, psb_d_null_precfree, psb_d_null_precdescr contains subroutine psb_d_null_apply(alpha,prec,x,beta,y,desc_data,info,trans,work) use psb_sparse_mod type(psb_desc_type),intent(in) :: desc_data class(psb_d_null_prec_type), intent(in) :: prec real(psb_dpk_),intent(in) :: x(:) real(psb_dpk_),intent(in) :: alpha, beta real(psb_dpk_),intent(inout) :: y(:) integer, intent(out) :: info character(len=1), optional :: trans real(psb_dpk_),intent(inout), optional, target :: work(:) Integer :: err_act, nrow character(len=20) :: name='d_null_prec_apply' call psb_erractionsave(err_act) ! ! This is the base version and we should throw an error. ! Or should it be the NULL preonditioner??? ! info = psb_success_ nrow = psb_cd_get_local_rows(desc_data) if (size(x) < nrow) then info = 36 call psb_errpush(info,name,i_err=(/2,nrow,0,0,0/)) goto 9999 end if if (size(y) < nrow) then info = 36 call psb_errpush(info,name,i_err=(/3,nrow,0,0,0/)) goto 9999 end if call psb_geaxpby(alpha,x,beta,y,desc_data,info) if (info /= psb_success_ ) then info = psb_err_from_subroutine_ call psb_errpush(infoi,name,a_err="psb_geaxpby") goto 9999 end if 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_null_apply subroutine psb_d_null_precinit(prec,info) use psb_sparse_mod Implicit None class(psb_d_null_prec_type),intent(inout) :: prec integer, intent(out) :: info Integer :: err_act, nrow character(len=20) :: name='d_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_d_null_precinit subroutine psb_d_null_precbld(a,desc_a,prec,info,upd) use psb_sparse_mod Implicit None type(psb_d_sparse_mat), intent(in), target :: a type(psb_desc_type), intent(in), target :: desc_a class(psb_d_null_prec_type),intent(inout) :: prec integer, intent(out) :: info character, intent(in), optional :: upd Integer :: err_act, nrow character(len=20) :: name='d_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_d_null_precbld subroutine psb_d_null_precseti(prec,what,val,info) use psb_sparse_mod Implicit None class(psb_d_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='d_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_d_null_precseti subroutine psb_d_null_precsetr(prec,what,val,info) use psb_sparse_mod Implicit None class(psb_d_null_prec_type),intent(inout) :: prec integer, intent(in) :: what real(psb_dpk_), intent(in) :: val integer, intent(out) :: info Integer :: err_act, nrow character(len=20) :: name='d_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_d_null_precsetr subroutine psb_d_null_precsetc(prec,what,val,info) use psb_sparse_mod Implicit None class(psb_d_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='d_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_d_null_precsetc subroutine psb_d_null_precfree(prec,info) use psb_sparse_mod Implicit None class(psb_d_null_prec_type), intent(inout) :: prec integer, intent(out) :: info Integer :: err_act, nrow character(len=20) :: name='d_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_d_null_precfree subroutine psb_d_null_precdescr(prec,iout) use psb_sparse_mod Implicit None class(psb_d_null_prec_type), intent(in) :: prec integer, intent(in), optional :: iout Integer :: err_act, nrow, info character(len=20) :: name='d_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_d_null_precdescr function psb_d_null_sizeof(prec) result(val) use psb_sparse_mod class(psb_d_null_prec_type), intent(in) :: prec integer(psb_long_int_k_) :: val val = 0 return end function psb_d_null_sizeof end module psb_d_nullprec