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Add transpose, adjoint, conjugate methods to SelfAdjointView (useful to write generic code)

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(grafted from 684cfc762d70e8ab766bc94968d8d5e462c44074
)
This commit is contained in:
Gael Guennebaud 2016-12-20 16:33:53 +01:00
parent eda635bd58
commit 0fddbf3dc7
2 changed files with 52 additions and 2 deletions
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36
Eigen/src/Core/SelfAdjointView.h
View File

@ -45,7 +45,7 @@ struct traits<SelfAdjointView<MatrixType, UpLo> > : traits<MatrixType>
};
}
// FIXME could also be called SelfAdjointWrapper to be consistent with DiagonalWrapper ??
template<typename _MatrixType, unsigned int UpLo> class SelfAdjointView
: public TriangularBase<SelfAdjointView<_MatrixType, UpLo> >
{
@ -60,10 +60,12 @@ template<typename _MatrixType, unsigned int UpLo> class SelfAdjointView
/** \brief The type of coefficients in this matrix */
typedef typename internal::traits<SelfAdjointView>::Scalar Scalar;
typedef typename MatrixType::StorageIndex StorageIndex;
typedef typename internal::remove_all<typename MatrixType::ConjugateReturnType>::type MatrixConjugateReturnType;
enum {
Mode = internal::traits<SelfAdjointView>::Mode,
Flags = internal::traits<SelfAdjointView>::Flags
Flags = internal::traits<SelfAdjointView>::Flags,
TransposeMode = ((Mode & Upper) ? Lower : 0) | ((Mode & Lower) ? Upper : 0)
};
typedef typename MatrixType::PlainObject PlainObject;
@ -187,6 +189,36 @@ template<typename _MatrixType, unsigned int UpLo> class SelfAdjointView
TriangularView<typename MatrixType::AdjointReturnType,TriMode> >::type(tmp2);
}
typedef SelfAdjointView<const MatrixConjugateReturnType,Mode> ConjugateReturnType;
/** \sa MatrixBase::conjugate() const */
EIGEN_DEVICE_FUNC
inline const ConjugateReturnType conjugate() const
{ return ConjugateReturnType(m_matrix.conjugate()); }
typedef SelfAdjointView<const typename MatrixType::AdjointReturnType,TransposeMode> AdjointReturnType;
/** \sa MatrixBase::adjoint() const */
EIGEN_DEVICE_FUNC
inline const AdjointReturnType adjoint() const
{ return AdjointReturnType(m_matrix.adjoint()); }
typedef SelfAdjointView<typename MatrixType::TransposeReturnType,TransposeMode> TransposeReturnType;
/** \sa MatrixBase::transpose() */
EIGEN_DEVICE_FUNC
inline TransposeReturnType transpose()
{
EIGEN_STATIC_ASSERT_LVALUE(MatrixType)
typename MatrixType::TransposeReturnType tmp(m_matrix);
return TransposeReturnType(tmp);
}
typedef SelfAdjointView<const typename MatrixType::ConstTransposeReturnType,TransposeMode> ConstTransposeReturnType;
/** \sa MatrixBase::transpose() const */
EIGEN_DEVICE_FUNC
inline const ConstTransposeReturnType transpose() const
{
return ConstTransposeReturnType(m_matrix.transpose());
}
/** \returns a const expression of the main diagonal of the matrix \c *this
*
* This method simply returns the diagonal of the nested expression, thus by-passing the SelfAdjointView decorator.

18
test/product_symm.cpp
View File

@ -39,6 +39,24 @@ template<typename Scalar, int Size, int OtherSize> void symm(int size = Size, in
VERIFY_IS_APPROX(rhs12 = (s1*m2).template selfadjointView<Lower>() * (s2*rhs1),
rhs13 = (s1*m1) * (s2*rhs1));
VERIFY_IS_APPROX(rhs12 = (s1*m2).transpose().template selfadjointView<Upper>() * (s2*rhs1),
rhs13 = (s1*m1.transpose()) * (s2*rhs1));
VERIFY_IS_APPROX(rhs12 = (s1*m2).template selfadjointView<Lower>().transpose() * (s2*rhs1),
rhs13 = (s1*m1.transpose()) * (s2*rhs1));
VERIFY_IS_APPROX(rhs12 = (s1*m2).conjugate().template selfadjointView<Lower>() * (s2*rhs1),
rhs13 = (s1*m1).conjugate() * (s2*rhs1));
VERIFY_IS_APPROX(rhs12 = (s1*m2).template selfadjointView<Lower>().conjugate() * (s2*rhs1),
rhs13 = (s1*m1).conjugate() * (s2*rhs1));
VERIFY_IS_APPROX(rhs12 = (s1*m2).adjoint().template selfadjointView<Upper>() * (s2*rhs1),
rhs13 = (s1*m1).adjoint() * (s2*rhs1));
VERIFY_IS_APPROX(rhs12 = (s1*m2).template selfadjointView<Lower>().adjoint() * (s2*rhs1),
rhs13 = (s1*m1).adjoint() * (s2*rhs1));
m2 = m1.template triangularView<Upper>(); rhs12.setRandom(); rhs13 = rhs12;
m3 = m2.template selfadjointView<Upper>();
VERIFY_IS_EQUAL(m1, m3);