CasidaThresholdEnergy

A - B - C - D - E - F - G - H - I - K - L - M - N - O - P - Q - R - S - T - U - V - W - X

 call parse_variable(namespace, 'CasidaThresholdEnergy', 1.0e-12_real64, delta_e_tol, units_inp%energy)