docs: public static ZMatrixRMaj householderVector(ZMatrixRMaj x ) {
          ZMatrixRMaj u = x.copy();
  
          double max = CommonOps_ZDRM.elementMaxAbs(u);
  
          CommonOps_ZDRM.elementDivide(u, max, 0, u);
  
          double nx = NormOps_ZDRM.normF(u);
          Complex_F64 c = new Complex_F64();
          u.get(0,0,c);
  
          double realTau,imagTau;
  
          if( c.getMagnitude() == 0 ) {
              realTau = nx;
              imagTau = 0;
          } else {
              realTau = c.real/c.getMagnitude()*nx;
              imagTau = c.imaginary/c.getMagnitude()*nx;
          }
  
          u.set(0,0,c.real + realTau,c.imaginary + imagTau);
          CommonOps_ZDRM.elementDivide(u,u.getReal(0,0),u.getImag(0,0),u);
  
          return u;
      }