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bug #890, add a more general routine to check that two dense object reference to the same data

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Gael Guennebaud
2015-06-10 10:09:04 +02:00
parent e6832ce93d
commit 192bce2795
4 changed files with 45 additions and 1 deletions
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12
Eigen/src/Core/util/XprHelper.h
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@@ -606,6 +606,18 @@ template<typename T, int S> struct is_diagonal<DiagonalMatrix<T,S> >
template<typename S1, typename S2> struct glue_shapes;
template<> struct glue_shapes<DenseShape,TriangularShape> { typedef TriangularShape type; };
template<typename T1, typename T2>
bool is_same_dense(const T1 &mat1, const T2 &mat2, typename enable_if<has_direct_access<T1>::ret&&has_direct_access<T2>::ret, T1>::type * = 0)
{
return (mat1.data()==mat2.data()) && (mat1.innerStride()==mat2.innerStride()) && (mat1.outerStride()==mat2.outerStride());
}
template<typename T1, typename T2>
bool is_same_dense(const T1 &, const T2 &, typename enable_if<!(has_direct_access<T1>::ret&&has_direct_access<T2>::ret), T1>::type * = 0)
{
return false;
}
} // end namespace internal
// we require Lhs and Rhs to have the same scalar type. Currently there is no example of a binary functor