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Add unit test for solveWithGuess, and fix template resolution.

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This commit is contained in:
Gael Guennebaud 2016-07-04 17:19:38 +02:00
parent 7f7839c12f
commit fbcfc2f862
2 changed files with 24 additions and 2 deletions
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5
Eigen/src/IterativeLinearSolvers/SolveWithGuess.h
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@ -81,7 +81,8 @@ struct evaluator<SolveWithGuess<Decomposition,RhsType, GuessType> >
: m_result(solve.rows(), solve.cols())
{
::new (static_cast<Base*>(this)) Base(m_result);
solve.dec()._solve_with_guess_impl(solve.rhs(), m_result, solve().guess());
m_result = solve.guess();
solve.dec()._solve_with_guess_impl(solve.rhs(), m_result);
}
protected:
@ -91,7 +92,7 @@ protected:
// Specialization for "dst = dec.solveWithGuess(rhs)"
// NOTE we need to specialize it for Dense2Dense to avoid ambiguous specialization error and a Sparse2Sparse specialization must exist somewhere
template<typename DstXprType, typename DecType, typename RhsType, typename GuessType, typename Scalar>
struct Assignment<DstXprType, SolveWithGuess<DecType,RhsType,GuessType>, internal::assign_op<Scalar,Scalar>, Dense2Dense, Scalar>
struct Assignment<DstXprType, SolveWithGuess<DecType,RhsType,GuessType>, internal::assign_op<Scalar,Scalar>, Dense2Dense>
{
typedef SolveWithGuess<DecType,RhsType,GuessType> SrcXprType;
static void run(DstXprType &dst, const SrcXprType &src, const internal::assign_op<Scalar,Scalar> &)

21
test/sparse_solver.h
View File

@ -11,6 +11,21 @@
#include <Eigen/SparseCore>
#include <sstream>
template<typename Solver, typename Rhs, typename Guess,typename Result>
void solve_with_guess(IterativeSolverBase<Solver>& solver, const MatrixBase<Rhs>& b, const Guess& g, Result &x) {
x = solver.derived().solveWithGuess(b.derived(),g);
}
template<typename Solver, typename Rhs, typename Guess,typename Result>
void solve_with_guess(SparseSolverBase<Solver>& solver, const MatrixBase<Rhs>& b, const Guess& , Result& x) {
x = solver.derived().solve(b);
}
template<typename Solver, typename Rhs, typename Guess,typename Result>
void solve_with_guess(SparseSolverBase<Solver>& solver, const SparseMatrixBase<Rhs>& b, const Guess& , Result& x) {
x = solver.derived().solve(b);
}
template<typename Solver, typename Rhs, typename DenseMat, typename DenseRhs>
void check_sparse_solving(Solver& solver, const typename Solver::MatrixType& A, const Rhs& b, const DenseMat& dA, const DenseRhs& db)
{
@ -37,6 +52,12 @@ void check_sparse_solving(Solver& solver, const typename Solver::MatrixType& A,
}
VERIFY(oldb.isApprox(b) && "sparse solver testing: the rhs should not be modified!");
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
x.setZero();
solve_with_guess(solver, b, x, x);
VERIFY(solver.info() == Success && "solving failed when using analyzePattern/factorize API");
VERIFY(oldb.isApprox(b) && "sparse solver testing: the rhs should not be modified!");
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
x.setZero();
// test the analyze/factorize API