/* neutrn.h */
EXTERN struct t_neutrn {
	float frcneu, 
	  totneu;
	int lgNeutrnHeatOn;
	float effneu;
	}	neutrn;

/*
 *flag lgNeutrnHeatOn says heating due to neutrons is enabled
 *frcneu is fraction of total luminosity in neutrons, effneu is efficiency
 *totneu is resulting total luminosity
 */