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factorize solving with guess

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This commit is contained in:
Gael Guennebaud
2011-10-24 09:33:24 +02:00
parent 70df09b76d
commit 5d43b4049d
3 changed files with 80 additions and 72 deletions
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42
unsupported/Eigen/src/SparseExtra/Solve.h
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@@ -76,7 +76,47 @@ template<typename _DecompositionType, typename Rhs> struct sparse_solve_retval_b
using Base::cols; \
sparse_solve_retval(const DecompositionType& dec, const Rhs& rhs) \
: Base(dec, rhs) {}
template<typename DecompositionType, typename Rhs, typename Guess> struct solve_retval_with_guess;
template<typename DecompositionType, typename Rhs, typename Guess>
struct traits<solve_retval_with_guess<DecompositionType, Rhs, Guess> >
{
typedef typename DecompositionType::MatrixType MatrixType;
typedef Matrix<typename Rhs::Scalar,
MatrixType::ColsAtCompileTime,
Rhs::ColsAtCompileTime,
Rhs::PlainObject::Options,
MatrixType::MaxColsAtCompileTime,
Rhs::MaxColsAtCompileTime> ReturnType;
};
template<typename DecompositionType, typename Rhs, typename Guess> struct solve_retval_with_guess
: public ReturnByValue<solve_retval_with_guess<DecompositionType, Rhs, Guess> >
{
typedef typename DecompositionType::Index Index;
solve_retval_with_guess(const DecompositionType& dec, const Rhs& rhs, const Guess& guess)
: m_dec(dec), m_rhs(rhs), m_guess(guess)
{}
inline Index rows() const { return m_dec.cols(); }
inline Index cols() const { return m_rhs.cols(); }
template<typename Dest> inline void evalTo(Dest& dst) const
{
dst = m_guess;
m_dec._solveWithGuess(m_rhs,dst);
}
protected:
const DecompositionType& m_dec;
const typename Rhs::Nested m_rhs;
const typename Guess::Nested m_guess;
};
} // namepsace internal
#endif // EIGEN_SPARSE_SOLVE_H