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Add internall::is_identity compile-time helper

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Gael Guennebaud
2018-07-11 14:00:24 +02:00
parent fe723d6129
commit 1625476091
1 changed files with 8 additions and 0 deletions
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8
Eigen/src/Core/util/XprHelper.h
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@@ -676,6 +676,14 @@ template<typename T> struct is_diagonal<DiagonalWrapper<T> >
template<typename T, int S> struct is_diagonal<DiagonalMatrix<T,S> >
{ enum { ret = true }; };
template<typename T> struct is_identity
{ enum { value = false }; };
template<typename T> struct is_identity<CwiseNullaryOp<internal::scalar_identity_op<typename T::Scalar>, T> >
{ enum { value = true }; };
template<typename S1, typename S2> struct glue_shapes;
template<> struct glue_shapes<DenseShape,TriangularShape> { typedef TriangularShape type; };