is_equal
return is_equal(m, affine_epsilon);
return !is_equal(m, affine_epsilon);
bool is_equal(const trans_affine& m, double epsilon = affine_epsilon) const;
return is_equal(m, affine_epsilon);
return !is_equal(m, affine_epsilon);
bool is_equal(const trans_perspective& m,
inline bool trans_perspective::is_equal(const trans_perspective& m,