w90_readwrite_read_num_wann Subroutine

public subroutine w90_readwrite_read_num_wann(settings, num_wann, error, comm)

Uses

  • proc~~w90_readwrite_read_num_wann~~UsesGraph proc~w90_readwrite_read_num_wann w90_readwrite_read_num_wann module~w90_error w90_error proc~w90_readwrite_read_num_wann->module~w90_error module~w90_comms w90_comms module~w90_error->module~w90_comms module~w90_error_base w90_error_base module~w90_error->module~w90_error_base module~w90_comms->module~w90_error_base module~w90_constants w90_constants module~w90_comms->module~w90_constants

reads the number of wannier functions "num_wann" (mandatory input)

Arguments

Type IntentOptional Attributes Name
type(settings_type), intent(inout) :: settings
integer, intent(inout) :: num_wann
type(w90_error_type), intent(out), allocatable :: error
type(w90_comm_type), intent(in) :: comm

Calls

proc~~w90_readwrite_read_num_wann~~CallsGraph proc~w90_readwrite_read_num_wann w90_readwrite_read_num_wann proc~set_error_input set_error_input proc~w90_readwrite_read_num_wann->proc~set_error_input proc~w90_readwrite_get_keyword w90_readwrite_get_keyword proc~w90_readwrite_read_num_wann->proc~w90_readwrite_get_keyword proc~comms_sync_error comms_sync_error proc~set_error_input->proc~comms_sync_error proc~set_base_error set_base_error proc~set_error_input->proc~set_base_error proc~w90_readwrite_get_keyword->proc~set_error_input proc~set_error_fatal set_error_fatal proc~w90_readwrite_get_keyword->proc~set_error_fatal proc~set_error_fatal->proc~comms_sync_error proc~set_error_fatal->proc~set_base_error

Called by

proc~~w90_readwrite_read_num_wann~~CalledByGraph proc~w90_readwrite_read_num_wann w90_readwrite_read_num_wann proc~w90_postw90_readwrite_read w90_postw90_readwrite_read proc~w90_postw90_readwrite_read->proc~w90_readwrite_read_num_wann proc~w90_wannier90_readwrite_read_special w90_wannier90_readwrite_read_special proc~w90_wannier90_readwrite_read_special->proc~w90_readwrite_read_num_wann proc~input_reader_special input_reader_special proc~input_reader_special->proc~w90_wannier90_readwrite_read_special proc~w90_input_setopt w90_input_setopt proc~w90_input_setopt->proc~w90_wannier90_readwrite_read_special program~postw90 postw90 program~postw90->proc~w90_postw90_readwrite_read proc~w90_input_setopt_f w90_input_setopt_f proc~w90_input_setopt_f->proc~w90_input_setopt program~wannier wannier program~wannier->proc~input_reader_special

Source Code

  subroutine w90_readwrite_read_num_wann(settings, num_wann, error, comm)
    !! reads the number of wannier functions "num_wann" (mandatory input)
    use w90_error, only: w90_error_type, set_error_input
    implicit none
    integer, intent(inout) :: num_wann
    type(w90_error_type), allocatable, intent(out) :: error
    type(w90_comm_type), intent(in) :: comm
    type(settings_type), intent(inout) :: settings

    logical :: found

    call w90_readwrite_get_keyword(settings, 'num_wann', found, error, comm, i_value=num_wann)
    if (allocated(error)) return

    if (.not. found) then
      call set_error_input(error, 'Error: You must specify num_wann', comm)
      return
    else if (num_wann <= 0) then
      call set_error_input(error, 'Error: num_wann must be greater than zero', comm)
      return
    end if
  end subroutine w90_readwrite_read_num_wann