Signature:
  SUBROUTINE h5sis_regular_hyperslab_f(space_id, IsRegular, hdferr)
    INTEGER(HID_T), INTENT(IN) ::  space_id
    LOGICAL :: IsRegular
    INTEGER, INTENT(OUT) :: hdferr
Inputs:
  space_id  - The identifier of the dataspace.
Outputs:
  IsRegular - TRUE or FALSE for hyperslab selection if successful.
  hdferr    - Returns 0 if successful and -1 if fails.