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Refactoring of the cost model:

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- Dynamic is now an invalid value
 - introduce a HugeCost constant to be used for runtime-cost values or arbitrarily huge cost
 - add sanity checks for cost values: must be >=0 and not too large
This change provides several benefits:
 - it fixes shortcoming is some cost computation where the Dynamic case was not properly handled.
 - it simplifies cost computation logic, and should avoid future similar shortcomings.
 - it allows to distinguish between different level of dynamic/huge/infinite cost
 - it should enable further simplifications in the computation of costs (save compilation time)
This commit is contained in:
Gael Guennebaud
2015-10-28 11:42:14 +01:00
parent 827d8a9bad
commit 77ff3386b7
22 changed files with 139 additions and 68 deletions
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10
Eigen/src/SparseCore/SparseCompressedBase.h
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@@ -226,8 +226,14 @@ struct evaluator<SparseCompressedBase<Derived> >
Flags = Derived::Flags
};
evaluator() : m_matrix(0) {}
explicit evaluator(const Derived &mat) : m_matrix(&mat) {}
evaluator() : m_matrix(0)
{
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
explicit evaluator(const Derived &mat) : m_matrix(&mat)
{
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
inline Index nonZerosEstimate() const {
return m_matrix->nonZeros();