docs: public static void normalizeSumOne( TupleDesc_F64 desc ) {
  		double sum = 0;
  		for (int i = 0; i < desc.size(); i++) {
  			double v = desc.value[i];
  			sum += v;
  		}
  		if( sum == 0 )
  			return;
  
  		for (int i = 0; i < desc.size(); i++) {
  			desc.value[i] /= sum;
  		}
  	}