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Product::coeff method are also OK for lazy products (including diagonal products)

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This commit is contained in:
Gael Guennebaud 2014-02-18 14:51:41 +01:00
parent 99e27916cf
commit 0543cb51b5
2 changed files with 17 additions and 5 deletions
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21
Eigen/src/Core/Product.h
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@ -117,27 +117,38 @@ template<typename Lhs, typename Rhs, int Option>
class ProductImpl<Lhs,Rhs,Option,Dense> class ProductImpl<Lhs,Rhs,Option,Dense>
: public internal::dense_product_base<Lhs,Rhs,Option> : public internal::dense_product_base<Lhs,Rhs,Option>
{ {
typedef Product<Lhs, Rhs> Derived; typedef Product<Lhs, Rhs, Option> Derived;
public: public:
typedef typename internal::dense_product_base<Lhs, Rhs, Option> Base; typedef typename internal::dense_product_base<Lhs, Rhs, Option> Base;
EIGEN_DENSE_PUBLIC_INTERFACE(Derived) EIGEN_DENSE_PUBLIC_INTERFACE(Derived)
protected:
enum {
IsOneByOne = (RowsAtCompileTime == 1 || RowsAtCompileTime == Dynamic) &&
(ColsAtCompileTime == 1 || ColsAtCompileTime == Dynamic),
EnableCoeff = IsOneByOne || Option==LazyProduct
};
public:
Scalar coeff(Index row, Index col) const Scalar coeff(Index row, Index col) const
{ {
EIGEN_STATIC_ASSERT_SIZE_1x1(Derived) EIGEN_STATIC_ASSERT(EnableCoeff, THIS_METHOD_IS_ONLY_FOR_INNER_OR_LAZY_PRODUCTS);
eigen_assert(this->rows() == 1 && this->cols() == 1); eigen_assert( (Option==LazyProduct) || (this->rows() == 1 && this->cols() == 1) );
return typename internal::evaluator<Derived>::type(derived()).coeff(row,col); return typename internal::evaluator<Derived>::type(derived()).coeff(row,col);
} }
Scalar coeff(Index i) const Scalar coeff(Index i) const
{ {
EIGEN_STATIC_ASSERT_SIZE_1x1(Derived) EIGEN_STATIC_ASSERT(EnableCoeff, THIS_METHOD_IS_ONLY_FOR_INNER_OR_LAZY_PRODUCTS);
eigen_assert(this->rows() == 1 && this->cols() == 1); eigen_assert( (Option==LazyProduct) || (this->rows() == 1 && this->cols() == 1) );
return typename internal::evaluator<Derived>::type(derived()).coeff(i); return typename internal::evaluator<Derived>::type(derived()).coeff(i);
} }
}; };
/*************************************************************************** /***************************************************************************

1
Eigen/src/Core/util/StaticAssert.h
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@ -84,6 +84,7 @@
THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY, THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY,
YOU_ARE_TRYING_TO_USE_AN_INDEX_BASED_ACCESSOR_ON_AN_EXPRESSION_THAT_DOES_NOT_SUPPORT_THAT, YOU_ARE_TRYING_TO_USE_AN_INDEX_BASED_ACCESSOR_ON_AN_EXPRESSION_THAT_DOES_NOT_SUPPORT_THAT,
THIS_METHOD_IS_ONLY_FOR_1x1_EXPRESSIONS, THIS_METHOD_IS_ONLY_FOR_1x1_EXPRESSIONS,
THIS_METHOD_IS_ONLY_FOR_INNER_OR_LAZY_PRODUCTS,
THIS_METHOD_IS_ONLY_FOR_EXPRESSIONS_OF_BOOL, THIS_METHOD_IS_ONLY_FOR_EXPRESSIONS_OF_BOOL,
THIS_METHOD_IS_ONLY_FOR_ARRAYS_NOT_MATRICES, THIS_METHOD_IS_ONLY_FOR_ARRAYS_NOT_MATRICES,
YOU_PASSED_A_ROW_VECTOR_BUT_A_COLUMN_VECTOR_WAS_EXPECTED, YOU_PASSED_A_ROW_VECTOR_BUT_A_COLUMN_VECTOR_WAS_EXPECTED,