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* as promised, remove the "optimization" for Product::diagonal()

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* add MatrixBase::lazyProduct
This commit is contained in:
Gael Guennebaud
2010-02-09 14:34:31 +01:00
parent 9ce1212d7c
commit 840977529f
4 changed files with 29 additions and 29 deletions
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25
Eigen/src/Core/Product.h
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@@ -445,4 +445,29 @@ MatrixBase<Derived>::operator*(const MatrixBase<OtherDerived> &other) const
return typename ProductReturnType<Derived,OtherDerived>::Type(derived(), other.derived());
}
template<typename Derived>
template<typename OtherDerived>
const typename ProductReturnType<Derived,OtherDerived,LazyCoeffBasedProductMode>::Type
MatrixBase<Derived>::lazyProduct(const MatrixBase<OtherDerived> &other) const
{
enum {
ProductIsValid = Derived::ColsAtCompileTime==Dynamic
|| OtherDerived::RowsAtCompileTime==Dynamic
|| int(Derived::ColsAtCompileTime)==int(OtherDerived::RowsAtCompileTime),
AreVectors = Derived::IsVectorAtCompileTime && OtherDerived::IsVectorAtCompileTime,
SameSizes = EIGEN_PREDICATE_SAME_MATRIX_SIZE(Derived,OtherDerived)
};
// note to the lost user:
// * for a dot product use: v1.dot(v2)
// * for a coeff-wise product use: v1.cwiseProduct(v2)
EIGEN_STATIC_ASSERT(ProductIsValid || !(AreVectors && SameSizes),
INVALID_VECTOR_VECTOR_PRODUCT__IF_YOU_WANTED_A_DOT_OR_COEFF_WISE_PRODUCT_YOU_MUST_USE_THE_EXPLICIT_FUNCTIONS)
EIGEN_STATIC_ASSERT(ProductIsValid || !(SameSizes && !AreVectors),
INVALID_MATRIX_PRODUCT__IF_YOU_WANTED_A_COEFF_WISE_PRODUCT_YOU_MUST_USE_THE_EXPLICIT_FUNCTION)
EIGEN_STATIC_ASSERT(ProductIsValid || SameSizes, INVALID_MATRIX_PRODUCT)
return typename ProductReturnType<Derived,OtherDerived,LazyCoeffBasedProductMode>::Type(derived(), other.derived());
}
#endif // EIGEN_PRODUCT_H