Init_Vector2D Subroutine

  subroutine Init_Vector2D(this,interp,nVar,nElem)
    implicit none
    class(Vector2D),intent(out) :: this
    type(Lagrange),target,intent(in) :: interp
    integer,intent(in) :: nVar
    integer,intent(in) :: nElem
    ! local
    integer :: i

    this%interp => interp
    this%nVar = nVar
    this%nElem = nElem
    this%N = interp%N
    this%M = interp%M

    call this%MapArrays(interp%N+1,nVar,nElem)

    allocate(this%meta(1:nVar))
    allocate(this%eqn(1:2*nVar))

    ! Initialize equation parser
    ! This is done to prevent segmentation faults that arise
    ! when building with amdflang that are traced back to
    ! feqparse_functions.f90 : finalize routine
    ! When the equation parser is not initialized, the
    ! functions are not allocated, which I think are the
    ! source of the segfault - joe@fluidnumerics.com
    do i = 1,2*nvar
      this%eqn(i) = EquationParser('f=0',(/'x','y','z','t'/))
    enddo

    this%interior = 0.0_prec
    this%boundary = 0.0_prec
    this%boundarynormal = 0.0_prec
    this%extBoundary = 0.0_prec
    this%avgBoundary = 0.0_prec

    call EnsureDeviceBuffers_Vector2D(this)

    call this%UpdateDevice()

  endsubroutine Init_Vector2D