commit 2f1454faf2fe4ba77fc56fe250783117c09e26c3
author Sameer Agarwal <sameeragarwal@google.com> Thu Jun 13 23:34:46 2013 -0700
committer Sameer Agarwal <sameeragarwal@google.com> Thu Jun 13 23:49:19 2013 -0700
tree 512c5a4d0b878e72a42ba20940d0f2870ea50214
parent 85b7e9d3c1f8251b2aac5e87832cb53a42e8e7ab

Add a templated TypedPreconditioner class.

This sets the stage of preconditioners that can utilize
different kinds of matrix layouts, just like the LinearSolver
class hierarchy.

Change-Id: I3579cf344bcd2eeeecb1ae621cab02a3c9a0f920

internal/ceres/schur_jacobi_preconditioner.h

diff --git a/internal/ceres/schur_jacobi_preconditioner.h b/internal/ceres/schur_jacobi_preconditioner.h
index b80a249..f6e7b0d 100644
--- a/internal/ceres/schur_jacobi_preconditioner.h
+++ b/internal/ceres/schur_jacobi_preconditioner.h
@@ -73,7 +73,7 @@
 //   preconditioner.Update(A, NULL);
 //   preconditioner.RightMultiply(x, y);
 //
-class SchurJacobiPreconditioner : public Preconditioner {
+class SchurJacobiPreconditioner : public BlockSparseMatrixPreconditioner {
  public:
   // Initialize the symbolic structure of the preconditioner. bs is
   // the block structure of the linear system to be solved. It is used
@@ -86,12 +86,12 @@
   virtual ~SchurJacobiPreconditioner();
 
   // Preconditioner interface.
-  virtual bool Update(const BlockSparseMatrix& A, const double* D);
   virtual void RightMultiply(const double* x, double* y) const;
   virtual int num_rows() const;
 
  private:
   void InitEliminator(const CompressedRowBlockStructure& bs);
+  virtual bool UpdateImpl(const BlockSparseMatrix& A, const double* D);
 
   Preconditioner::Options options_;