Signature:

  SUBROUTINE h5pget_fill_value_f(prp_id, type_id, fillvalue, hdferr)
    INTEGER(HID_T), INTENT(IN)  :: prp_id 
    INTEGER(HID_T), INTENT(IN)  :: type_id
    TYPE(VOID)    , INTENT(OUT) :: fillvalue
    INTEGER       , INTENT(OUT) :: hdferr

Inputs:

  prp_id    - Property list identifier
  type_id   - Datatype identifier of fill value datatype (in memory)

Outputs:

  fillvalue - Fillvalue
  hdferr    - Returns 0 if successful and -1 if fails