From 85c765957418cd2fd24b46ca3a14e6fcbad43f05 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 1 Sep 2014 15:00:19 +0200
Subject: Refactoring of sparse solvers through a SparseSolverBase class and
 usage of the Solve<> expression. Introduce a SolveWithGuess expression on top
 of Solve.

---
 Eigen/src/UmfPackSupport/UmfPackSupport.h | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

(limited to 'Eigen/src/UmfPackSupport')

diff --git a/Eigen/src/UmfPackSupport/UmfPackSupport.h b/Eigen/src/UmfPackSupport/UmfPackSupport.h
index 3a48cecf7..845c8076a 100644
--- a/Eigen/src/UmfPackSupport/UmfPackSupport.h
+++ b/Eigen/src/UmfPackSupport/UmfPackSupport.h
@@ -121,9 +121,13 @@ inline int umfpack_get_determinant(std::complex<double> *Mx, double *Ex, void *N
   * \sa \ref TutorialSparseDirectSolvers
   */
 template<typename _MatrixType>
-class UmfPackLU : internal::noncopyable
+class UmfPackLU : public SparseSolverBase<UmfPackLU<_MatrixType> >
 {
+  protected:
+    typedef SparseSolverBase<UmfPackLU<_MatrixType> > Base;
+    using Base::m_isInitialized;
   public:
+    using Base::_solve_impl;
     typedef _MatrixType MatrixType;
     typedef typename MatrixType::Scalar Scalar;
     typedef typename MatrixType::RealScalar RealScalar;
@@ -197,7 +201,8 @@ class UmfPackLU : internal::noncopyable
       analyzePattern(matrix);
       factorize(matrix);
     }
-
+    
+#ifndef EIGEN_TEST_EVALUATORS
     /** \returns the solution x of \f$ A x = b \f$ using the current decomposition of A.
       *
       * \sa compute()
@@ -223,6 +228,7 @@ class UmfPackLU : internal::noncopyable
                 && "UmfPackLU::solve(): invalid number of rows of the right hand side matrix b");
       return internal::sparse_solve_retval<UmfPackLU, Rhs>(*this, b.derived());
     }
+#endif
 
     /** Performs a symbolic decomposition on the sparcity of \a matrix.
       *
@@ -274,7 +280,7 @@ class UmfPackLU : internal::noncopyable
     #ifndef EIGEN_PARSED_BY_DOXYGEN
     /** \internal */
     template<typename BDerived,typename XDerived>
-    bool _solve(const MatrixBase<BDerived> &b, MatrixBase<XDerived> &x) const;
+    bool _solve_impl(const MatrixBase<BDerived> &b, MatrixBase<XDerived> &x) const;
     #endif
 
     Scalar determinant() const;
@@ -328,7 +334,6 @@ class UmfPackLU : internal::noncopyable
     void* m_symbolic;
 
     mutable ComputationInfo m_info;
-    bool m_isInitialized;
     int m_factorizationIsOk;
     int m_analysisIsOk;
     mutable bool m_extractedDataAreDirty;
@@ -376,7 +381,7 @@ typename UmfPackLU<MatrixType>::Scalar UmfPackLU<MatrixType>::determinant() cons
 
 template<typename MatrixType>
 template<typename BDerived,typename XDerived>
-bool UmfPackLU<MatrixType>::_solve(const MatrixBase<BDerived> &b, MatrixBase<XDerived> &x) const
+bool UmfPackLU<MatrixType>::_solve_impl(const MatrixBase<BDerived> &b, MatrixBase<XDerived> &x) const
 {
   const int rhsCols = b.cols();
   eigen_assert((BDerived::Flags&RowMajorBit)==0 && "UmfPackLU backend does not support non col-major rhs yet");
@@ -396,7 +401,7 @@ bool UmfPackLU<MatrixType>::_solve(const MatrixBase<BDerived> &b, MatrixBase<XDe
   return true;
 }
 
-
+#ifndef EIGEN_TEST_EVALUATORS
 namespace internal {
 
 template<typename _MatrixType, typename Rhs>
@@ -408,7 +413,7 @@ struct solve_retval<UmfPackLU<_MatrixType>, Rhs>
 
   template<typename Dest> void evalTo(Dest& dst) const
   {
-    dec()._solve(rhs(),dst);
+    dec()._solve_impl(rhs(),dst);
   }
 };
 
@@ -426,7 +431,7 @@ struct sparse_solve_retval<UmfPackLU<_MatrixType>, Rhs>
 };
 
 } // end namespace internal
-
+#endif
 } // end namespace Eigen
 
 #endif // EIGEN_UMFPACKSUPPORT_H
-- 
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