11 #ifndef EIGEN_DIAGONAL_H 12 #define EIGEN_DIAGONAL_H 36 template<
typename MatrixType,
int DiagIndex>
42 typedef typename MatrixType::StorageKind StorageKind;
45 : (EIGEN_PLAIN_ENUM_MIN(MatrixType::RowsAtCompileTime - EIGEN_PLAIN_ENUM_MAX(-DiagIndex, 0),
46 MatrixType::ColsAtCompileTime - EIGEN_PLAIN_ENUM_MAX( DiagIndex, 0))),
47 ColsAtCompileTime = 1,
48 MaxRowsAtCompileTime =
int(MatrixType::MaxSizeAtCompileTime) ==
Dynamic ?
Dynamic 49 : DiagIndex ==
DynamicIndex ? EIGEN_SIZE_MIN_PREFER_FIXED(MatrixType::MaxRowsAtCompileTime,
50 MatrixType::MaxColsAtCompileTime)
51 : (EIGEN_PLAIN_ENUM_MIN(MatrixType::MaxRowsAtCompileTime - EIGEN_PLAIN_ENUM_MAX(-DiagIndex, 0),
52 MatrixType::MaxColsAtCompileTime - EIGEN_PLAIN_ENUM_MAX( DiagIndex, 0))),
53 MaxColsAtCompileTime = 1,
57 InnerStrideAtCompileTime = MatrixTypeOuterStride ==
Dynamic ?
Dynamic : MatrixTypeOuterStride+1,
58 OuterStrideAtCompileTime = 0
63 template<
typename MatrixType,
int _DiagIndex>
class Diagonal 68 enum { DiagIndex = _DiagIndex };
70 EIGEN_DENSE_PUBLIC_INTERFACE(
Diagonal)
73 explicit inline Diagonal(MatrixType& matrix,
Index a_index = DiagIndex) : m_matrix(matrix), m_index(a_index) {}
75 EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Diagonal)
78 inline Index rows()
const 80 return m_index.value()<0 ? numext::mini<Index>(m_matrix.cols(),m_matrix.rows()+m_index.value())
81 : numext::mini<Index>(m_matrix.rows(),m_matrix.cols()-m_index.value());
85 inline Index cols()
const {
return 1; }
88 inline Index innerStride()
const 90 return m_matrix.outerStride() + 1;
94 inline Index outerStride()
const 106 inline ScalarWithConstIfNotLvalue* data() {
return &(m_matrix.coeffRef(rowOffset(), colOffset())); }
108 inline const Scalar* data()
const {
return &(m_matrix.coeffRef(rowOffset(), colOffset())); }
113 EIGEN_STATIC_ASSERT_LVALUE(MatrixType)
114 return m_matrix.coeffRef(row+rowOffset(), row+colOffset());
118 inline const Scalar& coeffRef(
Index row,
Index)
const 120 return m_matrix.coeffRef(row+rowOffset(), row+colOffset());
124 inline CoeffReturnType coeff(
Index row,
Index)
const 126 return m_matrix.coeff(row+rowOffset(), row+colOffset());
130 inline Scalar& coeffRef(
Index idx)
132 EIGEN_STATIC_ASSERT_LVALUE(MatrixType)
133 return m_matrix.coeffRef(idx+rowOffset(), idx+colOffset());
137 inline const Scalar& coeffRef(
Index idx)
const 139 return m_matrix.coeffRef(idx+rowOffset(), idx+colOffset());
143 inline CoeffReturnType coeff(
Index idx)
const 145 return m_matrix.coeff(idx+rowOffset(), idx+colOffset());
150 nestedExpression()
const 156 inline Index index()
const 158 return m_index.
value();
168 EIGEN_STRONG_INLINE
Index absDiagIndex()
const {
return m_index.value()>0 ? m_index.value() : -m_index.value(); }
170 EIGEN_STRONG_INLINE
Index rowOffset()
const {
return m_index.value()>0 ? 0 : -m_index.value(); }
172 EIGEN_STRONG_INLINE
Index colOffset()
const {
return m_index.value()>0 ? m_index.value() : 0; }
174 template<
int LoadMode>
typename MatrixType::PacketReturnType packet(
Index)
const;
175 template<
int LoadMode>
typename MatrixType::PacketReturnType packet(
Index,
Index)
const;
186 template<
typename Derived>
194 template<
typename Derived>
212 template<
typename Derived>
220 template<
typename Derived>
238 template<
typename Derived>
243 return typename DiagonalIndexReturnType<Index_>::Type(derived());
247 template<
typename Derived>
252 return typename ConstDiagonalIndexReturnType<Index_>::Type(derived());
257 #endif // EIGEN_DIAGONAL_H Expression of the transpose of a matrix.
Definition: Transpose.h:52
const unsigned int DirectAccessBit
Means that the underlying array of coefficients can be directly accessed as a plain strided array...
Definition: Constants.h:150
const unsigned int LvalueBit
Means the expression has a coeffRef() method, i.e.
Definition: Constants.h:139
Namespace containing all symbols from the Eigen library.
Definition: bench_norm.cpp:85
const int DynamicIndex
This value means that a signed quantity (e.g., a signed index) is not known at compile-time, and that instead its value has to be specified at runtime.
Definition: Constants.h:26
const unsigned int RowMajorBit
for a matrix, this means that the storage order is row-major.
Definition: Constants.h:61
Definition: XprHelper.h:463
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index
The Index type as used for the API.
Definition: Meta.h:33
Definition: XprHelper.h:396
Definition: BandTriangularSolver.h:13
Definition: DenseCoeffsBase.h:666
const Scalar & value() const
Definition: SparseUtil.h:170
EIGEN_DEVICE_FUNC DiagonalReturnType diagonal()
Definition: Diagonal.h:188
Expression of a diagonal/subdiagonal/superdiagonal in a matrix.
Definition: Diagonal.h:63
const int Dynamic
This value means that a positive quantity (e.g., a size) is not known at compile-time, and that instead the value is stored in some runtime variable.
Definition: Constants.h:21
Generic expression where a coefficient-wise unary operator is applied to an expression.
Definition: CwiseUnaryOp.h:55
Base class for all dense matrices, vectors, and expressions.
Definition: MatrixBase.h:48
Definition: ForwardDeclarations.h:17
Definition: XprHelper.h:630