1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@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 #define EIGEN_NO_STATIC_ASSERT 11 #include "main.h" 12 13 template<typename T> 14 struct other_matrix_type 15 { 16 typedef int type; 17 }; 18 19 template<typename _Scalar, int _Rows, int _Cols, int _Options, int _MaxRows, int _MaxCols> 20 struct other_matrix_type<Matrix<_Scalar, _Rows, _Cols, _Options, _MaxRows, _MaxCols> > 21 { 22 typedef Matrix<_Scalar, _Rows, _Cols, _Options^RowMajor, _MaxRows, _MaxCols> type; 23 }; 24 swap(const MatrixType & m)25 template<typename MatrixType> void swap(const MatrixType& m) 26 { 27 typedef typename other_matrix_type<MatrixType>::type OtherMatrixType; 28 typedef typename MatrixType::Scalar Scalar; 29 30 ei_assert((!ei_is_same_type<MatrixType,OtherMatrixType>::ret)); 31 int rows = m.rows(); 32 int cols = m.cols(); 33 34 // construct 3 matrix guaranteed to be distinct 35 MatrixType m1 = MatrixType::Random(rows,cols); 36 MatrixType m2 = MatrixType::Random(rows,cols) + Scalar(100) * MatrixType::Identity(rows,cols); 37 OtherMatrixType m3 = OtherMatrixType::Random(rows,cols) + Scalar(200) * OtherMatrixType::Identity(rows,cols); 38 39 MatrixType m1_copy = m1; 40 MatrixType m2_copy = m2; 41 OtherMatrixType m3_copy = m3; 42 43 // test swapping 2 matrices of same type 44 m1.swap(m2); 45 VERIFY_IS_APPROX(m1,m2_copy); 46 VERIFY_IS_APPROX(m2,m1_copy); 47 m1 = m1_copy; 48 m2 = m2_copy; 49 50 // test swapping 2 matrices of different types 51 m1.swap(m3); 52 VERIFY_IS_APPROX(m1,m3_copy); 53 VERIFY_IS_APPROX(m3,m1_copy); 54 m1 = m1_copy; 55 m3 = m3_copy; 56 57 // test swapping matrix with expression 58 m1.swap(m2.block(0,0,rows,cols)); 59 VERIFY_IS_APPROX(m1,m2_copy); 60 VERIFY_IS_APPROX(m2,m1_copy); 61 m1 = m1_copy; 62 m2 = m2_copy; 63 64 // test swapping two expressions of different types 65 m1.transpose().swap(m3.transpose()); 66 VERIFY_IS_APPROX(m1,m3_copy); 67 VERIFY_IS_APPROX(m3,m1_copy); 68 m1 = m1_copy; 69 m3 = m3_copy; 70 71 // test assertion on mismatching size -- matrix case 72 VERIFY_RAISES_ASSERT(m1.swap(m1.row(0))); 73 // test assertion on mismatching size -- xpr case 74 VERIFY_RAISES_ASSERT(m1.row(0).swap(m1)); 75 } 76 test_eigen2_swap()77 void test_eigen2_swap() 78 { 79 CALL_SUBTEST_1( swap(Matrix3f()) ); // fixed size, no vectorization 80 CALL_SUBTEST_1( swap(Matrix4d()) ); // fixed size, possible vectorization 81 CALL_SUBTEST_1( swap(MatrixXd(3,3)) ); // dyn size, no vectorization 82 CALL_SUBTEST_1( swap(MatrixXf(30,30)) ); // dyn size, possible vectorization 83 } 84