Parallel Colt 0.7.2

cern.colt.matrix.tdouble.algo.solver
Class DoubleCG

java.lang.Object
  extended by cern.colt.matrix.tdouble.algo.solver.AbstractDoubleIterativeSolver
      extended by cern.colt.matrix.tdouble.algo.solver.DoubleCG
All Implemented Interfaces:
DoubleIterativeSolver

public class DoubleCG
extends AbstractDoubleIterativeSolver

Conjugate Gradients solver. CG solves the symmetric positive definite linear system Ax=b using the Conjugate Gradient method.

Author:
Templates

Constructor Summary
DoubleCG(DoubleMatrix1D template)
          Constructor for CG.
 
Method Summary
 DoubleMatrix1D solve(DoubleMatrix2D A, DoubleMatrix1D b, DoubleMatrix1D x)
          Solves the given problem, writing result into the vector.
 
Methods inherited from class cern.colt.matrix.tdouble.algo.solver.AbstractDoubleIterativeSolver
getIterationMonitor, getPreconditioner, setIterationMonitor, setPreconditioner
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

DoubleCG

public DoubleCG(DoubleMatrix1D template)
Constructor for CG. Uses the given vector as template for creating scratch vectors. Typically, the solution or the right hand side vector can be passed, and the template is not modified

Parameters:
template - Vector to use as template for the work vectors needed in the solution process
Method Detail

solve

public DoubleMatrix1D solve(DoubleMatrix2D A,
                            DoubleMatrix1D b,
                            DoubleMatrix1D x)
                     throws IterativeSolverDoubleNotConvergedException
Description copied from interface: DoubleIterativeSolver
Solves the given problem, writing result into the vector.

Parameters:
A - Matrix of the problem
b - Right hand side
x - Solution is stored here. Also used as initial guess
Returns:
The solution vector x
Throws:
IterativeSolverDoubleNotConvergedException

Parallel Colt 0.7.2

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