sizeof.cpp
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1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
5 //
6 // This Source Code Form is subject to the terms of the Mozilla
7 // Public License v. 2.0. If a copy of the MPL was not distributed
8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
9 
10 #include "main.h"
11 
12 template<typename MatrixType> void verifySizeOf(const MatrixType&)
13 {
14  typedef typename MatrixType::Scalar Scalar;
15  if (MatrixType::RowsAtCompileTime!=Dynamic && MatrixType::ColsAtCompileTime!=Dynamic)
16  VERIFY_IS_EQUAL(std::ptrdiff_t(sizeof(MatrixType)),std::ptrdiff_t(sizeof(Scalar))*std::ptrdiff_t(MatrixType::SizeAtCompileTime));
17  else
18  VERIFY_IS_EQUAL(sizeof(MatrixType),sizeof(Scalar*) + 2 * sizeof(Index));
19 }
20 
22 {
35  CALL_SUBTEST(verifySizeOf(Vector2d()) );
36  CALL_SUBTEST(verifySizeOf(Vector4f()) );
37  CALL_SUBTEST(verifySizeOf(Matrix4d()) );
40  CALL_SUBTEST(verifySizeOf(MatrixXcf(3, 3)) );
41  CALL_SUBTEST(verifySizeOf(MatrixXi(8, 12)) );
42  CALL_SUBTEST(verifySizeOf(MatrixXcd(20, 20)) );
44 
45  VERIFY(sizeof(std::complex<float>) == 2*sizeof(float));
46  VERIFY(sizeof(std::complex<double>) == 2*sizeof(double));
47 }
MatrixType
MatrixXf MatrixType
Definition: benchmark-blocking-sizes.cpp:52
VERIFY_IS_EQUAL
#define VERIFY_IS_EQUAL(a, b)
Definition: main.h:386
Eigen::Array
General-purpose arrays with easy API for coefficient-wise operations.
Definition: Array.h:45
Eigen::Dynamic
const int Dynamic
Definition: Constants.h:22
verifySizeOf
void verifySizeOf(const MatrixType &)
Definition: sizeof.cpp:12
main.h
Eigen::Matrix
The matrix class, also used for vectors and row-vectors.
Definition: 3rdparty/Eigen/Eigen/src/Core/Matrix.h:178
EIGEN_DECLARE_TEST
EIGEN_DECLARE_TEST(sizeof)
Definition: sizeof.cpp:21
Scalar
SCALAR Scalar
Definition: bench_gemm.cpp:46
CALL_SUBTEST
#define CALL_SUBTEST(FUNC)
Definition: main.h:399
VERIFY
#define VERIFY(a)
Definition: main.h:380
Eigen::Index
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index
The Index type as used for the API.
Definition: Meta.h:74


gtsam
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autogenerated on Fri Nov 1 2024 03:35:27