| PPL Java Language Interface
    1.2
    | 
A linear expression. More...

| Public Member Functions | |
| Linear_Expression | sum (Linear_Expression y) | 
| Returns the sum of thisandy. | |
| Linear_Expression | subtract (Linear_Expression y) | 
| Returns the difference of thisandy. | |
| Linear_Expression | times (Coefficient c) | 
| Returns the product of thistimesc. | |
| Linear_Expression | unary_minus () | 
| Returns the negation of this. | |
| abstract Linear_Expression | clone () | 
| Returns a copy of the linear expression. | |
| native String | ascii_dump () | 
| Returns an ascii formatted internal representation of this. | |
| native String | toString () | 
| Returns a string representation of this. | |
| native boolean | is_zero () | 
| Returns trueif and only ifthisis . | |
| native boolean | all_homogeneous_terms_are_zero () | 
| Returns trueif and only if all the homogeneous terms ofthisare . | |
A linear expression.
An object of the class Linear_Expression represents a linear expression that can be built from a Linear_Expression_Variable, Linear_Expression_Coefficient, Linear_Expression_Sum, Linear_Expression_Difference, Linear_Expression_Unary_Minus.