code: public static ComplexDoubleMatrix gerc(ComplexDouble alpha, ComplexDoubleMatrix x,
  			ComplexDoubleMatrix y, ComplexDoubleMatrix a) {
  		NativeBlas.zgerc(a.rows, a.columns, alpha, x.data, 0, 1, y.data, 0, 1, a.data,
  				0, a.rows);
  		return a;
  	}
docs: Compute A <- alpha * x * y^H + A (general rank-1 update)