com.interpss.core.sparse.solver

Class LeastSquareCSJDoubleSolver

java.lang.Object

com.interpss.core.sparse.solver.BaseSparseEqnSolver

com.interpss.core.sparse.solver.BaseCSJEqnDoubleSolver

com.interpss.core.sparse.solver.LeastSquareCSJDoubleSolver

All Implemented Interfaces:

ISparseEqnSolver

public class LeastSquareCSJDoubleSolver
extends BaseCSJEqnDoubleSolver

Sparse Equation solver implementation of data type double for solving the LeastSquare problem.

Field Summary

Fields inherited from class com.interpss.core.sparse.solver.BaseSparseEqnSolver

CSJ_Order, CSJ_Tol

Constructor Summary

Constructors

Constructor and Description
LeastSquareCSJDoubleSolver(ISparseEqnDouble eqn, int order, boolean weighted)

Method Summary

Modifier and Type	Method and Description
boolean	factorization() QR factorization of the [A] matrix.
void	solveEqn() Solve the [A]X = B problem
double[]	solveEqn(double[] b) Solve the [A]X = B problem, assume that [A] is factorized

Methods inherited from class com.interpss.core.sparse.solver.BaseSparseEqnSolver

factorization, setMatrixDirty

Methods inherited from class java.lang.Object

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

Constructor Detail

LeastSquareCSJDoubleSolver

public LeastSquareCSJDoubleSolver(ISparseEqnDouble eqn,
                                  int order,
                                  boolean weighted)

Method Detail

solveEqn

public void solveEqn()
              throws IpssNumericException

Solve the [A]X = B problem

Throws:

IpssNumericException

solveEqn

public double[] solveEqn(double[] b)
                  throws IpssNumericException

Solve the [A]X = B problem, assume that [A] is factorized

Specified by:

solveEqn in interface ISparseEqnSolver

Overrides:

solveEqn in class BaseSparseEqnSolver

Parameters:

b - the b vector

Throws:

IpssNumericException

factorization

public boolean factorization()
                      throws IpssNumericException

QR factorization of the [A] matrix.

Specified by:

factorization in interface ISparseEqnSolver

Overrides:

factorization in class BaseSparseEqnSolver

Parameters:

tolerance - the tolerance for matrix singular detection, not used for this implementation

Returns:

if succeed return true.

Throws:

IpssNumericException