at.dms.kjc.linprog
Class SimpleLinearProgram

java.lang.Object
  at.dms.kjc.linprog.SimpleLinearProgram

All Implemented Interfaces:

LinearProgram, Serializable

Direct Known Subclasses:

CPLEXSolve, MPSWriter

public class SimpleLinearProgram
extends Object
implements LinearProgram, Serializable

A simple implementation of the LinearProgram interface; keeps track of all the information that has been passed in with local fields.

See Also:

Serialized Form

Field Summary

protected boolean[]	boolVar An array indicating whether or not a given variable should be constrained to be zero-one.
protected List<at.dms.kjc.linprog.Constraint>	constraints Rows of Constraints.
protected int	numVars Number of variables.
protected double[]	obj The objective function.

Constructor Summary

SimpleLinearProgram(int numVars)
Create one of these with variables.

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 a boolean variable (zero or one).
void	setObjective(double[] obj) Sets the objective function to be .

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

numVars

protected int numVars

Number of variables.

constraints

protected List<at.dms.kjc.linprog.Constraint> constraints

Rows of Constraints.

obj

protected double[] obj

The objective function.

boolVar

protected boolean[] boolVar

An array indicating whether or not a given variable should be constrained to be zero-one.

Constructor Detail

SimpleLinearProgram

public SimpleLinearProgram(int numVars)

Create one of these with variables.

Method Detail

getEmptyConstraint

public 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.)

Specified by:

getEmptyConstraint in interface LinearProgram

setObjective

public void setObjective(double[] obj)

Sets the objective function to be .

Specified by:

setObjective in interface LinearProgram

setBoolVar

public void setBoolVar(int n)

Constrains the n'th variable of this to be a boolean variable (zero or one).

Specified by:

setBoolVar in interface LinearProgram

addConstraintGE

public 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, >= .

Specified by:

addConstraintGE in interface LinearProgram

addConstraintEQ

public void addConstraintEQ(double[] constraint,
                            double rhs)

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

Specified by:

addConstraintEQ in interface LinearProgram