remove the Taucs backend : Taucs is not maintained anymore and the backend was crap anyway

4 files changed, 1 insertions, 278 deletions

diff --git a/unsupported/Eigen/CMakeLists.txt b/unsupported/Eigen/CMakeLists.txt
index a858e5113..024ac2738 100644
--- a/unsupported/Eigen/CMakeLists.txt
+++ b/unsupported/Eigen/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(Eigen_HEADERS AdolcForward BVH IterativeSolvers MatrixFunctions MoreVectorization AutoDiff AlignedVector3 Polynomials
                   CholmodSupport FFT NonLinearOptimization SparseExtra SuperLUSupport UmfPackSupport IterativeSolvers
-                  NumericalDiff Skyline TaucsSupport MPRealSupport
+                  NumericalDiff Skyline MPRealSupport
    )
 
 install(FILES
diff --git a/unsupported/Eigen/SparseExtra b/unsupported/Eigen/SparseExtra
index 54a011f26..712a63271 100644
--- a/unsupported/Eigen/SparseExtra
+++ b/unsupported/Eigen/SparseExtra
@@ -29,16 +29,6 @@ namespace Eigen {
 
 struct DefaultBackend {};
 
-/*
-enum SparseBackend {
-  DefaultBackend,
-  Taucs,
-  Cholmod,
-  SuperLU,
-  UmfPack
-};
-*/
-
 
 // solver flags
 enum {
diff --git a/unsupported/Eigen/TaucsSupport b/unsupported/Eigen/TaucsSupport
deleted file mode 100644
index dca2c095b..000000000
--- a/unsupported/Eigen/TaucsSupport
+++ /dev/null
@@ -1,48 +0,0 @@
-#ifndef EIGEN_TAUCSSUPPORT_MODULE_H
-#define EIGEN_TAUCSSUPPORT_MODULE_H
-
-#include "SparseExtra"
-
-#include "src/Core/util/DisableMSVCWarnings.h"
-
-// taucs.h declares a lot of mess
-#define isnan
-#define finite
-#define isinf
-extern "C" {
-  #include <taucs.h>
-}
-#undef isnan
-#undef finite
-#undef isinf
-
-#ifdef min
-  #undef min
-#endif
-#ifdef max
-  #undef max
-#endif
-#ifdef complex
-  #undef complex
-#endif
-
-namespace Eigen {
-
-/** \ingroup Unsupported_modules
-  * \defgroup TaucsSupport_Module Taucs support module
-  *
-  *
-  *
-  *
-  * \code
-  * #include <Eigen/TaucsSupport>
-  * \endcode
-  */
-
-# include "src/SparseExtra/TaucsSupport.h"
-
-} // namespace Eigen
-
-#include "src/Core/util/EnableMSVCWarnings.h"
-
-#endif // EIGEN_TAUCSSUPPORT_MODULE_H
diff --git a/unsupported/Eigen/src/SparseExtra/TaucsSupport.h b/unsupported/Eigen/src/SparseExtra/TaucsSupport.h
deleted file mode 100644
index efc89b596..000000000
--- a/unsupported/Eigen/src/SparseExtra/TaucsSupport.h
+++ /dev/null
@@ -1,219 +0,0 @@
-// This file is part of Eigen, a lightweight C++ template library
-// for linear algebra.
-//
-// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr>
-//
-// Eigen is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 3 of the License, or (at your option) any later version.
-//
-// Alternatively, you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of
-// the License, or (at your option) any later version.
-//
-// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
-// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License and a copy of the GNU General Public License along with
-// Eigen. If not, see <http://www.gnu.org/licenses/>.
-
-#ifndef EIGEN_TAUCSSUPPORT_H
-#define EIGEN_TAUCSSUPPORT_H
-
-template<typename MatrixType>
-taucs_ccs_matrix ei_asTaucsMatrix(MatrixType& mat)
-{
-  typedef typename MatrixType::Scalar Scalar;
-enum { Flags = MatrixType::Flags };
-  taucs_ccs_matrix res;
-  res.n         = mat.cols();
-  res.m         = mat.rows();
-  res.flags     = 0;
-  res.colptr    = mat._outerIndexPtr();
-  res.rowind    = mat._innerIndexPtr();
-  res.values.v  = mat._valuePtr();
-  if (ei_is_same_type<Scalar,int>::ret)
-    res.flags |= TAUCS_INT;
-  else if (ei_is_same_type<Scalar,float>::ret)
-    res.flags |= TAUCS_SINGLE;
-  else if (ei_is_same_type<Scalar,double>::ret)
-    res.flags |= TAUCS_DOUBLE;
-  else if (ei_is_same_type<Scalar,std::complex<float> >::ret)
-    res.flags |= TAUCS_SCOMPLEX;
-  else if (ei_is_same_type<Scalar,std::complex<double> >::ret)
-    res.flags |= TAUCS_DCOMPLEX;
-  else
-  {
-    ei_assert(false && "Scalar type not supported by TAUCS");
-  }
-
-  // FIXME 1) shapes are not in the Flags and 2) it seems Taucs ignores these flags anyway and only accept lower symmetric matrices
-  if (Flags & Upper)
-    res.flags |= TAUCS_UPPER;
-  if (Flags & Lower)
-    res.flags |= TAUCS_LOWER;
-  if (Flags & SelfAdjoint)
-    res.flags |= (NumTraits<Scalar>::IsComplex ? TAUCS_HERMITIAN : TAUCS_SYMMETRIC);
-  else if ((Flags & Upper) || (Flags & Lower))
-    res.flags |= TAUCS_TRIANGULAR;
-
-  return res;
-}
-
-template<typename Scalar, int Flags, typename Index>
-MappedSparseMatrix<Scalar,Flags,Index> ei_map_taucs(taucs_ccs_matrix& taucsMat)
-{
-  return MappedSparseMatrix<Scalar,Flags,Index>
-    (taucsMat.m, taucsMat.n, taucsMat.colptr[taucsMat.n],
-     taucsMat.colptr, taucsMat.rowind, reinterpret_cast<Scalar*>(taucsMat.values.v));
-}
-
-template<typename MatrixType>
-class SparseLLT<MatrixType,Taucs> : public SparseLLT<MatrixType>
-{
-  protected:
-    typedef SparseLLT<MatrixType> Base;
-    typedef typename Base::Index Index;
-    typedef typename Base::Scalar Scalar;
-    typedef typename Base::RealScalar RealScalar;
-    typedef typename Base::CholMatrixType CholMatrixType;
-    using Base::MatrixLIsDirty;
-    using Base::SupernodalFactorIsDirty;
-    using Base::m_flags;
-    using Base::m_matrix;
-    using Base::m_status;
-    using Base::m_succeeded;
-
-  public:
-
-    SparseLLT(int flags = SupernodalMultifrontal)
-      : Base(flags), m_taucsSupernodalFactor(0)
-    {
-    }
-
-    SparseLLT(const MatrixType& matrix, int flags = SupernodalMultifrontal)
-      : Base(flags), m_taucsSupernodalFactor(0)
-    {
-      compute(matrix);
-    }
-
-    ~SparseLLT()
-    {
-      if (m_taucsSupernodalFactor)
-        taucs_supernodal_factor_free(m_taucsSupernodalFactor);
-    }
-
-    inline const CholMatrixType& matrixL() const;
-
-    template<typename Derived>
-    void solveInPlace(MatrixBase<Derived> &b) const;
-
-    void compute(const MatrixType& matrix);
-
-  protected:
-    void* m_taucsSupernodalFactor;
-};
-
-template<typename MatrixType>
-void SparseLLT<MatrixType,Taucs>::compute(const MatrixType& a)
-{
-  if (m_taucsSupernodalFactor)
-  {
-    taucs_supernodal_factor_free(m_taucsSupernodalFactor);
-    m_taucsSupernodalFactor = 0;
-  }
-
-  taucs_ccs_matrix taucsMatA = ei_asTaucsMatrix(const_cast<MatrixType&>(a));
-
-  if (m_flags & IncompleteFactorization)
-  {
-    taucs_ccs_matrix* taucsRes = taucs_ccs_factor_llt(&taucsMatA, Base::m_precision, 0);
-    if(!taucsRes)
-    {
-      m_succeeded = false;
-      return;
-    }
-    // the matrix returned by Taucs is not necessarily sorted,
-    // so let's copy it in two steps
-    DynamicSparseMatrix<Scalar,RowMajor> tmp = ei_map_taucs<Scalar,ColMajor,Index>(*taucsRes);
-    m_matrix = tmp;
-    free(taucsRes);
-    m_status = (m_status & ~(CompleteFactorization|MatrixLIsDirty))
-             | IncompleteFactorization
-             | SupernodalFactorIsDirty;
-  }
-  else
-  {
-    if ( (m_flags & SupernodalLeftLooking)
-      || ((!(m_flags & SupernodalMultifrontal)) && (m_flags & MemoryEfficient)) )
-    {
-      m_taucsSupernodalFactor = taucs_ccs_factor_llt_ll(&taucsMatA);
-    }
-    else
-    {
-      // use the faster Multifrontal routine
-      m_taucsSupernodalFactor = taucs_ccs_factor_llt_mf(&taucsMatA);
-    }
-    m_status = (m_status & ~IncompleteFactorization) | CompleteFactorization | MatrixLIsDirty;
-  }
-  m_succeeded = true;
-}
-
-template<typename MatrixType>
-inline const typename SparseLLT<MatrixType,Taucs>::CholMatrixType&
-SparseLLT<MatrixType,Taucs>::matrixL() const
-{
-  if (m_status & MatrixLIsDirty)
-  {
-    ei_assert(!(m_status & SupernodalFactorIsDirty));
-
-    taucs_ccs_matrix* taucsL = taucs_supernodal_factor_to_ccs(m_taucsSupernodalFactor);
-
-    // the matrix returned by Taucs is not necessarily sorted,
-    // so let's copy it in two steps
-    DynamicSparseMatrix<Scalar,RowMajor> tmp = ei_map_taucs<Scalar,ColMajor,Index>(*taucsL);
-    const_cast<typename Base::CholMatrixType&>(m_matrix) = tmp;
-    free(taucsL);
-    m_status = (m_status & ~MatrixLIsDirty);
-  }
-  return m_matrix;
-}
-
-template<typename MatrixType>
-template<typename Derived>
-void SparseLLT<MatrixType,Taucs>::solveInPlace(MatrixBase<Derived> &b) const
-{
-  bool inputIsCompatibleWithTaucs = (Derived::Flags&RowMajorBit)==0;
-
-  if (!inputIsCompatibleWithTaucs)
-  {
-    matrixL();
-    Base::solveInPlace(b);
-  }
-  else if (m_flags & IncompleteFactorization)
-  {
-    taucs_ccs_matrix taucsLLT = ei_asTaucsMatrix(const_cast<typename Base::CholMatrixType&>(m_matrix));
-    typename ei_plain_matrix_type<Derived>::type x(b.rows());
-    for (int j=0; j<b.cols(); ++j)
-    {
-      taucs_ccs_solve_llt(&taucsLLT,x.data(),&b.col(j).coeffRef(0));
-      b.col(j) = x;
-    }
-  }
-  else
-  {
-    typename ei_plain_matrix_type<Derived>::type x(b.rows());
-    for (int j=0; j<b.cols(); ++j)
-    {
-      taucs_supernodal_solve_llt(m_taucsSupernodalFactor,x.data(),&b.col(j).coeffRef(0));
-      b.col(j) = x;
-    }
-  }
-}
-
-#endif // EIGEN_TAUCSSUPPORT_H