gtsam
3rdparty
Eigen
doc
examples
class_FixedVectorBlock.cpp
Go to the documentation of this file.
1
#include <Eigen/Core>
2
#include <iostream>
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using namespace
Eigen
;
4
using namespace
std
;
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6
template
<
typename
Derived>
7
Eigen::VectorBlock<Derived, 2>
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firstTwo
(
MatrixBase<Derived>
&
v
)
9
{
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return
Eigen::VectorBlock<Derived, 2>
(
v
.derived(), 0);
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}
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template
<
typename
Derived>
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const
Eigen::VectorBlock<const Derived, 2>
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firstTwo
(
const
MatrixBase<Derived>
&
v
)
16
{
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return
Eigen::VectorBlock<const Derived, 2>
(
v
.derived(), 0);
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}
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int
main
(
int
,
char
**)
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{
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Matrix<int,1,6>
v
;
v
<< 1,2,3,4,5,6;
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cout <<
firstTwo
(4*
v
) << endl;
// calls the const version
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firstTwo
(
v
) *= 2;
// calls the non-const version
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cout <<
"Now the vector v is:"
<< endl <<
v
<< endl;
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return
0;
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}
Eigen
Namespace containing all symbols from the Eigen library.
Definition:
jet.h:637
firstTwo
Eigen::VectorBlock< Derived, 2 > firstTwo(MatrixBase< Derived > &v)
Definition:
class_FixedVectorBlock.cpp:8
main
int main(int, char **)
Definition:
class_FixedVectorBlock.cpp:20
std
Definition:
BFloat16.h:88
Eigen::VectorBlock
Expression of a fixed-size or dynamic-size sub-vector.
Definition:
ForwardDeclarations.h:85
v
Array< int, Dynamic, 1 > v
Definition:
Array_initializer_list_vector_cxx11.cpp:1
Eigen::Matrix
The matrix class, also used for vectors and row-vectors.
Definition:
3rdparty/Eigen/Eigen/src/Core/Matrix.h:178
Eigen::MatrixBase
Base class for all dense matrices, vectors, and expressions.
Definition:
MatrixBase.h:48
gtsam
Author(s):
autogenerated on Sat Nov 16 2024 04:01:58