| Scythe-1.0.3
   
    | 
| 
template<typename T_type = double, matrix_order ORDER = Col, matrix_style STYLE = Concrete>  
 Returns true if all of this Matrix's above-diagonal elements equal 0. The return value of this method is undefined for null matrices. 
 | 
 1.7.6.1
 1.7.6.1