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* Clean a bit the eigenvalue solver: if the matrix is known to be

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selfadjoint at compile time, then it returns real eigenvalues.
* Fix a couple of bugs with the new product.
This commit is contained in:
Gael Guennebaud
2008-05-13 07:40:25 +00:00
parent 3eccfd1a78
commit fd2e9e5c3c
2 changed files with 257 additions and 234 deletions
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5
Eigen/src/Core/ProductWIP.h
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@@ -143,6 +143,7 @@ template<typename Lhs, typename Rhs> struct ei_product_eval_mode
{
enum{ value = Lhs::MaxRowsAtCompileTime >= EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD
&& Rhs::MaxColsAtCompileTime >= EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD
&& Lhs::MaxColsAtCompileTime >= EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD
? CacheFriendlyProduct : NormalProduct };
};
@@ -188,7 +189,7 @@ template<typename T, int n=1> struct ei_product_nested_lhs
(ei_traits<T>::Flags & EvalBeforeNestingBit)
|| (!(ei_traits<T>::Flags & DirectAccessBit))
|| (n+1) * NumTraits<typename ei_traits<T>::Scalar>::ReadCost < (n-1) * T::CoeffReadCost,
typename ei_product_eval_to_column_major<T>::type,
typename ei_eval<T>::type,
const T&
>::ret
>::ret type;
@@ -201,7 +202,7 @@ struct ei_traits<Product<Lhs, Rhs, EvalMode> >
// the cache friendly product evals lhs once only
// FIXME what to do if we chose to dynamically call the normal product from the cache friendly one for small matrices ?
typedef typename ei_meta_if<EvalMode==CacheFriendlyProduct,
typename ei_product_nested_lhs<Rhs,0>::type,
typename ei_product_nested_lhs<Lhs,0>::type,
typename ei_nested<Lhs,Rhs::ColsAtCompileTime>::type>::ret LhsNested;
// NOTE that rhs must be ColumnMajor, so we might need a special nested type calculation