code: def _dirint_from_dni_ktprime(dni, kt_prime, solar_zenith, use_delta_kt_prime,
                               temp_dew):
      
      times = dni.index
      delta_kt_prime = _delta_kt_prime_dirint(kt_prime, use_delta_kt_prime,
                                              times)
      w = _temp_dew_dirint(temp_dew, times)
      dirint_coeffs = _dirint_coeffs(times, kt_prime, solar_zenith, w,
                                     delta_kt_prime)
      dni_dirint = dni * dirint_coeffs
      return dni_dirint
docs: Calculate DIRINT DNI from supplied DISC DNI and Kt'.
  
      Supports :py:func:`gti_dirint`