at.dms.kjc.linprog
Interface LinearProgram

All Known Subinterfaces:

LinearProgramSolver

All Known Implementing Classes:

CPLEXSolve, GLPKSolve, LPSolve, MPSWriter, SimpleLinearProgram

public interface LinearProgram

A generic inteface to a linear programming package. Constraints are all specified in terms of arrays of variables; it is up to the user to keep track of which index of the array corresponds to which variable. In functions taking an index, the indices start from 0.

Method Summary

void	addConstraintEQ(double[] constraint, double rhs) Adds an equality constraint between the variables with coefficients and the right-hand-side .
void	addConstraintGE(double[] constraint, double rhs) Adds a greater-than-or-equal constraint between the variables with coefficients and the right-hand-side .
double[]	getEmptyConstraint() Returns an array with a zero-entry for each variable in the linear program (which the client can then fill in with coefficients before checking in as a new constraint.)
void	setBoolVar(int n) Constrains the n'th variable of this to be an integer.
void	setObjective(double[] obj) Sets the objective function to be .

Method Detail

getEmptyConstraint

double[] getEmptyConstraint()

Returns an array with a zero-entry for each variable in the linear program (which the client can then fill in with coefficients before checking in as a new constraint.)

setObjective

void setObjective(double[] obj)

Sets the objective function to be .

setBoolVar

void setBoolVar(int n)

Constrains the n'th variable of this to be an integer.

addConstraintGE

void addConstraintGE(double[] constraint,
                     double rhs)

Adds a greater-than-or-equal constraint between the variables with coefficients and the right-hand-side . That is, >= .

addConstraintEQ

void addConstraintEQ(double[] constraint,
                     double rhs)

Adds an equality constraint between the variables with coefficients and the right-hand-side .