cxx11_tensor_mixed_indices.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) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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 #include <Eigen/CXX11/Tensor>
13 
14 
15 static void test_simple()
16 {
19 
20  vec1(0) = 4.0; vec2(0) = 0.0;
21  vec1(1) = 8.0; vec2(1) = 1.0;
22  vec1(2) = 15.0; vec2(2) = 2.0;
23  vec1(3) = 16.0; vec2(3) = 3.0;
24  vec1(4) = 23.0; vec2(4) = 4.0;
25  vec1(5) = 42.0; vec2(5) = 5.0;
26 
27  float data3[6];
29  vec3 = vec1.sqrt();
30  float data4[6];
32  vec4 = vec2.square();
33 
34  VERIFY_IS_APPROX(vec3(0), sqrtf(4.0));
35  VERIFY_IS_APPROX(vec3(1), sqrtf(8.0));
36  VERIFY_IS_APPROX(vec3(2), sqrtf(15.0));
37  VERIFY_IS_APPROX(vec3(3), sqrtf(16.0));
38  VERIFY_IS_APPROX(vec3(4), sqrtf(23.0));
39  VERIFY_IS_APPROX(vec3(5), sqrtf(42.0));
40 
41  VERIFY_IS_APPROX(vec4(0), 0.0f);
42  VERIFY_IS_APPROX(vec4(1), 1.0f);
43  VERIFY_IS_APPROX(vec4(2), 2.0f * 2.0f);
44  VERIFY_IS_APPROX(vec4(3), 3.0f * 3.0f);
45  VERIFY_IS_APPROX(vec4(4), 4.0f * 4.0f);
46  VERIFY_IS_APPROX(vec4(5), 5.0f * 5.0f);
47 }
48 
49 
50 EIGEN_DECLARE_TEST(cxx11_tensor_mixed_indices)
51 {
53 }
EIGEN_DECLARE_TEST(cxx11_tensor_mixed_indices)
#define VERIFY_IS_APPROX(a, b)
A tensor expression mapping an existing array of data.
Point2(* f)(const Point3 &, OptionalJacobian< 2, 3 >)
static SO4::VectorN2 vec4(const Matrix4 &Q)
Definition: SO4.cpp:140
static void test_simple()
RowVectorXd vec1(3)
#define CALL_SUBTEST(FUNC)
Definition: main.h:399
static Vector9 vec3(const Matrix3 &R)
Definition: SO3.cpp:342
The tensor class.
Definition: Tensor.h:63


gtsam
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autogenerated on Tue Jul 4 2023 02:34:08