41   VERIFY_IS_APPROX(-(-m1),                  m1);  in linearStructure()
42   VERIFY_IS_APPROX(m1+m1,                   2*m1);  in linearStructure()
43   VERIFY_IS_APPROX(m1+m2-m1,                m2);  in linearStructure()
44   VERIFY_IS_APPROX(-m2+m1+m2,               m1);  in linearStructure()
45   VERIFY_IS_APPROX(m1*s1,                   s1*m1);  in linearStructure()
46   VERIFY_IS_APPROX((m1+m2)*s1,              s1*m1+s1*m2);  in linearStructure()
47   VERIFY_IS_APPROX((-m1+m2)*s1,             -s1*m1+s1*m2);  in linearStructure()
49   VERIFY_IS_APPROX(m3,                      m1+m2);  in linearStructure()
51   VERIFY_IS_APPROX(m3,                      m2-m1);  in linearStructure()
53   VERIFY_IS_APPROX(m3,                      s1*m2);  in linearStructure()
57     VERIFY_IS_APPROX(m3,                    m2/s1);  in linearStructure()
61   VERIFY_IS_APPROX((-m1)(r,c), -(m1(r,c)));  in linearStructure()
62   VERIFY_IS_APPROX((m1-m2)(r,c), (m1(r,c))-(m2(r,c)));  in linearStructure()
63   VERIFY_IS_APPROX((m1+m2)(r,c), (m1(r,c))+(m2(r,c)));  in linearStructure()
64   VERIFY_IS_APPROX((s1*m1)(r,c), s1*(m1(r,c)));  in linearStructure()
65   VERIFY_IS_APPROX((m1*s1)(r,c), (m1(r,c))*s1);  in linearStructure()
67     VERIFY_IS_APPROX((m1/s1)(r,c), (m1(r,c))/s1);  in linearStructure()
70   VERIFY_IS_APPROX(m1+m1.block(0,0,rows,cols), m1+m1);  in linearStructure()
71   VERIFY_IS_APPROX(m1.cwiseProduct(m1.block(0,0,rows,cols)), m1.cwiseProduct(m1));  in linearStructure()
72   VERIFY_IS_APPROX(m1 - m1.block(0,0,rows,cols), m1 - m1);  in linearStructure()
73   VERIFY_IS_APPROX(m1.block(0,0,rows,cols) * s1, m1 * s1);  in linearStructure()
86   VERIFY_IS_APPROX(s*m1, Scalar(s)*m1);  in real_complex()
90   VERIFY_IS_APPROX(m1*s, m1*Scalar(s));  in real_complex()
94   VERIFY_IS_APPROX(m1/s, m1/Scalar(s));  in real_complex()
98   VERIFY_IS_APPROX(s+m1.array(), Scalar(s)+m1.array());  in real_complex()
102   VERIFY_IS_APPROX(m1.array()+s, m1.array()+Scalar(s));  in real_complex()
106   VERIFY_IS_APPROX(s-m1.array(), Scalar(s)-m1.array());  in real_complex()
110   VERIFY_IS_APPROX(m1.array()-s, m1.array()-Scalar(s));  in real_complex()
142     VERIFY_IS_APPROX(m2.cwiseQuotient(m2), Matrix4d::Ones());  in test_linearstructure()
144     VERIFY_IS_APPROX(m3.cwiseQuotient(m3), Matrix4d::Ones());  in test_linearstructure()