def _dirint_from_dni_ktprime(dni, kt_prime, solar_zenith, use_delta_kt_prime,<EOL>temp_dew):
times = dni.index<EOL>delta_kt_prime = _delta_kt_prime_dirint(kt_prime, use_delta_kt_prime,<EOL>times)<EOL>w = _temp_dew_dirint(temp_dew, times)<EOL>dirint_coeffs = _dirint_coeffs(times, kt_prime, solar_zenith, w,<EOL>delta_kt_prime)<EOL>dni_dirint = dni * dirint_coeffs<EOL>return dni_dirint<EOL>
Calculate DIRINT DNI from supplied DISC DNI and Kt'.

Supports :py:func:`gti_dirint`