tem_evalDiff_fromIndex Subroutine

public recursive subroutine tem_evalDiff_fromIndex(fun, varSys, time, iLevel, idx, idxLen, nVals, res)

Same as evalDiff_forPoint except it evaluate diff from points via index which are setup before hand

The interface has to comply to the abstract interface tem_varSys_module#tem_varSys_proc_point

Arguments

Type IntentOptional Attributes Name
class(tem_varSys_op_type), intent(in) :: fun

Description of the method to obtain the variables, here some preset values might be stored, like the space time function to use or the required variables.
type(tem_varSys_type), intent(in) :: varSys

The variable system to obtain the variable from.
type(tem_time_type), intent(in) :: time

Point in time at which to evaluate the variable.
integer, intent(in) :: iLevel

Level on which values are requested
integer, intent(in) :: idx(:)

Index of points in the growing array and variable val array to return. Size: nVals
integer, intent(in), optional :: idxLen(:)

With idx as start index in contiguous memory, idxLength defines length of each contiguous memory Size: nVals
integer, intent(in) :: nVals

Number of values to obtain for this variable (vectorized access).
real(kind=rk), intent(out) :: res(:)

Resulting values for the requested variable.

Dimension: n requested entries x nComponents of this variable Access: (iElem-1)*fun%nComponents + iComp

Calls

proc~~tem_evaldiff_fromindex~~CallsGraph proc~tem_evaldiff_fromindex tem_evalDiff_fromIndex proc~tem_varsys_check_inargs tem_varSys_check_inArgs proc~tem_evaldiff_fromindex->proc~tem_varsys_check_inargs

Source Code

  recursive subroutine tem_evalDiff_fromIndex( fun, varSys, time, iLevel, idx, &
    &                                          idxLen, nVals, res              )
    ! ---------------------------------------------------------------------- !
    !> Description of the method to obtain the variables, here some preset
    !! values might be stored, like the space time function to use or the
    !! required variables.
    class(tem_varSys_op_type), intent(in) :: fun

    !> The variable system to obtain the variable from.
    type(tem_varSys_type), intent(in) :: varSys

    !> Point in time at which to evaluate the variable.
    type(tem_time_type), intent(in) :: time

    !> Level on which values are requested
    integer, intent(in) :: iLevel

    !> Index of points in the growing array and variable val array to
    !! return.
    !! Size: nVals
    integer, intent(in) :: idx(:)

    !> With idx as start index in contiguous memory,
    !! idxLength defines length of each contiguous memory
    !! Size: nVals
    integer, optional, intent(in) :: idxLen(:)

    !> Number of values to obtain for this variable (vectorized access).
    integer, intent(in) :: nVals

    !> Resulting values for the requested variable.
    !!
    !! Dimension: n requested entries x nComponents of this variable
    !! Access: (iElem-1)*fun%nComponents + iComp
    real(kind=rk), intent(out) :: res(:)
    ! ---------------------------------------------------------------------- !
    integer :: iDep, posDepVar
    ! first dimension:nElems,
    ! second dimension:size of difference variable in input_varname
    real(kind=rk), allocatable :: input_varRes(:,:)
    ! ---------------------------------------------------------------------- !
    type(tem_varSys_op_data_type), pointer :: opData
    integer :: nTotal
    ! ---------------------------------------------------------------------- !

    call C_F_POINTER( fun%method_Data, opData )

    ! check if number of index are the same as number of values asked for
    call tem_varSys_check_inArgs( fun, varSys, time, iLevel, idx, idxLen, &
      &    nVals, label = 'tem_evalDiff_fromIndex'                        )

    nTotal = nVals*fun%nComponents
    ! nInputs must be two
    allocate(input_varRes(nTotal, fun%nInputs))

    do iDep = 1, fun%nInputs
      ! get position of dependent var in varSys
      posDepVar = fun%input_varPos(iDep)

      ! derive dependent variable for indices
      !rent derive dependent variable
      call varSys%method%val(posDepVar)%get_valOfIndex( &
          & varSys  = varSys,                           &
          & time    = time,                             &
          & iLevel  = iLevel,                           &
          & idx     = opData%input_pntIndex(iDep)       &
          &           %indexLvl(iLevel)%val( idx(:) ),  &
          & nVals   = nVals,                            &
          & res     = input_varRes(:,iDep)              )
    end do

    res(:nTotal) = input_varRes(:, 1) - input_varRes(:, 2)

    deallocate(input_varRes)

  end subroutine tem_evalDiff_fromIndex