gtsam
3rdparty
Eigen
unsupported
test
cxx11_tensor_of_complex.cpp
Go to the documentation of this file.
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// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#include "
main.h
"
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#include <Eigen/CXX11/Tensor>
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using
Eigen::Tensor
;
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using
Eigen::TensorMap
;
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static
void
test_additions
()
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{
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Tensor<std::complex<float>
, 1> data1(3);
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Tensor<std::complex<float>
, 1> data2(3);
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for
(
int
i
= 0;
i
< 3; ++
i
) {
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data1(
i
) = std::complex<float>(
i
, -
i
);
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data2(
i
) = std::complex<float>(
i
, 7 *
i
);
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}
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Tensor<std::complex<float>
, 1> sum = data1 + data2;
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for
(
int
i
= 0;
i
< 3; ++
i
) {
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VERIFY_IS_EQUAL
(sum(
i
), std::complex<float>(2*
i
, 6*
i
));
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}
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}
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static
void
test_abs
()
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{
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Tensor<std::complex<float>
, 1> data1(3);
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Tensor<std::complex<double>
, 1> data2(3);
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data1.
setRandom
();
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data2.
setRandom
();
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Tensor<float, 1>
abs1 = data1.abs();
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Tensor<double, 1>
abs2
= data2.abs();
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for
(
int
i
= 0;
i
< 3; ++
i
) {
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VERIFY_IS_APPROX
(abs1(
i
),
std::abs
(data1(
i
)));
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VERIFY_IS_APPROX
(
abs2
(
i
),
std::abs
(data2(
i
)));
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}
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}
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static
void
test_conjugate
()
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{
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Tensor<std::complex<float>
, 1> data1(3);
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Tensor<std::complex<double>
, 1> data2(3);
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Tensor<int, 1>
data3(3);
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data1.
setRandom
();
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data2.
setRandom
();
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data3.
setRandom
();
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Tensor<std::complex<float>
, 1> conj1 = data1.conjugate();
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Tensor<std::complex<double>
, 1> conj2 = data2.conjugate();
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Tensor<int, 1>
conj3 = data3.conjugate();
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for
(
int
i
= 0;
i
< 3; ++
i
) {
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VERIFY_IS_APPROX
(conj1(
i
),
std::conj
(data1(
i
)));
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VERIFY_IS_APPROX
(conj2(
i
),
std::conj
(data2(
i
)));
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VERIFY_IS_APPROX
(conj3(
i
), data3(
i
));
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}
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}
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static
void
test_contractions
()
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{
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Tensor<std::complex<float>
, 4> t_left(30, 50, 8, 31);
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Tensor<std::complex<float>
, 5> t_right(8, 31, 7, 20, 10);
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Tensor<std::complex<float>
, 5> t_result(30, 50, 7, 20, 10);
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t_left.
setRandom
();
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t_right.
setRandom
();
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typedef
Map<Matrix<std::complex<float>
,
Dynamic
,
Dynamic
>> MapXcf;
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MapXcf m_left(t_left.
data
(), 1500, 248);
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MapXcf m_right(t_right.
data
(), 248, 1400);
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Matrix<std::complex<float>
,
Dynamic
,
Dynamic
> m_result(1500, 1400);
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// This contraction should be equivalent to a regular matrix multiplication
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typedef
Tensor<float, 1>::DimensionPair
DimPair
;
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Eigen::array<DimPair, 2>
dims;
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dims[0] =
DimPair
(2, 0);
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dims[1] =
DimPair
(3, 1);
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t_result = t_left.contract(t_right, dims);
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m_result = m_left * m_right;
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for
(
int
i
= 0;
i
< t_result.
dimensions
().TotalSize();
i
++) {
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VERIFY_IS_APPROX
(t_result.
data
()[
i
], m_result.
data
()[
i
]);
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}
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}
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EIGEN_DECLARE_TEST
(cxx11_tensor_of_complex)
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{
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CALL_SUBTEST
(
test_additions
());
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CALL_SUBTEST
(
test_abs
());
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CALL_SUBTEST
(
test_conjugate
());
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CALL_SUBTEST
(
test_contractions
());
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}
Eigen::Tensor
The tensor class.
Definition:
Tensor.h:63
test_contractions
static void test_contractions()
Definition:
cxx11_tensor_of_complex.cpp:70
Eigen::array
Definition:
EmulateArray.h:21
VERIFY_IS_EQUAL
#define VERIFY_IS_EQUAL(a, b)
Definition:
main.h:386
abs2
EIGEN_DEVICE_FUNC const EIGEN_STRONG_INLINE Abs2ReturnType abs2() const
Definition:
ArrayCwiseUnaryOps.h:80
test_conjugate
static void test_conjugate()
Definition:
cxx11_tensor_of_complex.cpp:51
Eigen::Tensor::dimensions
EIGEN_DEVICE_FUNC const EIGEN_STRONG_INLINE Dimensions & dimensions() const
Definition:
Tensor.h:102
Eigen::Dynamic
const int Dynamic
Definition:
Constants.h:22
Eigen::TensorMap
A tensor expression mapping an existing array of data.
Definition:
TensorForwardDeclarations.h:52
conj
AnnoyingScalar conj(const AnnoyingScalar &x)
Definition:
AnnoyingScalar.h:104
Eigen::Map
A matrix or vector expression mapping an existing array of data.
Definition:
Map.h:94
VERIFY_IS_APPROX
#define VERIFY_IS_APPROX(a, b)
Definition:
integer_types.cpp:15
Eigen::TensorBase< Tensor< Scalar_, NumIndices_, Options_, IndexType_ > >::setRandom
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Tensor< Scalar_, NumIndices_, Options_, IndexType_ > & setRandom()
Definition:
TensorBase.h:996
main.h
Eigen::Tensor::data
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar * data()
Definition:
Tensor.h:104
Eigen::PlainObjectBase< Matrix< _Scalar, _Rows, _Cols, _Options, _MaxRows, _MaxCols > >::data
EIGEN_DEVICE_FUNC const EIGEN_STRONG_INLINE Scalar * data() const
Definition:
PlainObjectBase.h:247
Eigen::Matrix
The matrix class, also used for vectors and row-vectors.
Definition:
3rdparty/Eigen/Eigen/src/Core/Matrix.h:178
abs
#define abs(x)
Definition:
datatypes.h:17
DimPair
Tensor< float, 1 >::DimensionPair DimPair
Definition:
cxx11_tensor_contraction.cpp:17
test_additions
static void test_additions()
Definition:
cxx11_tensor_of_complex.cpp:19
test_abs
static void test_abs()
Definition:
cxx11_tensor_of_complex.cpp:35
EIGEN_DECLARE_TEST
EIGEN_DECLARE_TEST(cxx11_tensor_of_complex)
Definition:
cxx11_tensor_of_complex.cpp:97
i
int i
Definition:
BiCGSTAB_step_by_step.cpp:9
CALL_SUBTEST
#define CALL_SUBTEST(FUNC)
Definition:
main.h:399
gtsam
Author(s):
autogenerated on Sat Nov 16 2024 04:02:09