1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2006-2010 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 #include "main.h"
11
12 #define COMPARE_CORNER(A,B) \
13 VERIFY_IS_EQUAL(matrix.A, matrix.B); \
14 VERIFY_IS_EQUAL(const_matrix.A, const_matrix.B);
15
corners(const MatrixType & m)16 template<typename MatrixType> void corners(const MatrixType& m)
17 {
18 typedef typename MatrixType::Index Index;
19 Index rows = m.rows();
20 Index cols = m.cols();
21
22 Index r = internal::random<Index>(1,rows);
23 Index c = internal::random<Index>(1,cols);
24
25 MatrixType matrix = MatrixType::Random(rows,cols);
26 const MatrixType const_matrix = MatrixType::Random(rows,cols);
27
28 COMPARE_CORNER(topLeftCorner(r,c), block(0,0,r,c));
29 COMPARE_CORNER(topRightCorner(r,c), block(0,cols-c,r,c));
30 COMPARE_CORNER(bottomLeftCorner(r,c), block(rows-r,0,r,c));
31 COMPARE_CORNER(bottomRightCorner(r,c), block(rows-r,cols-c,r,c));
32
33 Index sr = internal::random<Index>(1,rows) - 1;
34 Index nr = internal::random<Index>(1,rows-sr);
35 Index sc = internal::random<Index>(1,cols) - 1;
36 Index nc = internal::random<Index>(1,cols-sc);
37
38 COMPARE_CORNER(topRows(r), block(0,0,r,cols));
39 COMPARE_CORNER(middleRows(sr,nr), block(sr,0,nr,cols));
40 COMPARE_CORNER(bottomRows(r), block(rows-r,0,r,cols));
41 COMPARE_CORNER(leftCols(c), block(0,0,rows,c));
42 COMPARE_CORNER(middleCols(sc,nc), block(0,sc,rows,nc));
43 COMPARE_CORNER(rightCols(c), block(0,cols-c,rows,c));
44 }
45
corners_fixedsize()46 template<typename MatrixType, int CRows, int CCols, int SRows, int SCols> void corners_fixedsize()
47 {
48 MatrixType matrix = MatrixType::Random();
49 const MatrixType const_matrix = MatrixType::Random();
50
51 enum {
52 rows = MatrixType::RowsAtCompileTime,
53 cols = MatrixType::ColsAtCompileTime,
54 r = CRows,
55 c = CCols,
56 sr = SRows,
57 sc = SCols
58 };
59
60 VERIFY_IS_EQUAL((matrix.template topLeftCorner<r,c>()), (matrix.template block<r,c>(0,0)));
61 VERIFY_IS_EQUAL((matrix.template topRightCorner<r,c>()), (matrix.template block<r,c>(0,cols-c)));
62 VERIFY_IS_EQUAL((matrix.template bottomLeftCorner<r,c>()), (matrix.template block<r,c>(rows-r,0)));
63 VERIFY_IS_EQUAL((matrix.template bottomRightCorner<r,c>()), (matrix.template block<r,c>(rows-r,cols-c)));
64
65 VERIFY_IS_EQUAL((matrix.template topRows<r>()), (matrix.template block<r,cols>(0,0)));
66 VERIFY_IS_EQUAL((matrix.template middleRows<r>(sr)), (matrix.template block<r,cols>(sr,0)));
67 VERIFY_IS_EQUAL((matrix.template bottomRows<r>()), (matrix.template block<r,cols>(rows-r,0)));
68 VERIFY_IS_EQUAL((matrix.template leftCols<c>()), (matrix.template block<rows,c>(0,0)));
69 VERIFY_IS_EQUAL((matrix.template middleCols<c>(sc)), (matrix.template block<rows,c>(0,sc)));
70 VERIFY_IS_EQUAL((matrix.template rightCols<c>()), (matrix.template block<rows,c>(0,cols-c)));
71
72 VERIFY_IS_EQUAL((const_matrix.template topLeftCorner<r,c>()), (const_matrix.template block<r,c>(0,0)));
73 VERIFY_IS_EQUAL((const_matrix.template topRightCorner<r,c>()), (const_matrix.template block<r,c>(0,cols-c)));
74 VERIFY_IS_EQUAL((const_matrix.template bottomLeftCorner<r,c>()), (const_matrix.template block<r,c>(rows-r,0)));
75 VERIFY_IS_EQUAL((const_matrix.template bottomRightCorner<r,c>()), (const_matrix.template block<r,c>(rows-r,cols-c)));
76
77 VERIFY_IS_EQUAL((const_matrix.template topRows<r>()), (const_matrix.template block<r,cols>(0,0)));
78 VERIFY_IS_EQUAL((const_matrix.template middleRows<r>(sr)), (const_matrix.template block<r,cols>(sr,0)));
79 VERIFY_IS_EQUAL((const_matrix.template bottomRows<r>()), (const_matrix.template block<r,cols>(rows-r,0)));
80 VERIFY_IS_EQUAL((const_matrix.template leftCols<c>()), (const_matrix.template block<rows,c>(0,0)));
81 VERIFY_IS_EQUAL((const_matrix.template middleCols<c>(sc)), (const_matrix.template block<rows,c>(0,sc)));
82 VERIFY_IS_EQUAL((const_matrix.template rightCols<c>()), (const_matrix.template block<rows,c>(0,cols-c)));
83 }
84
test_corners()85 void test_corners()
86 {
87 for(int i = 0; i < g_repeat; i++) {
88 CALL_SUBTEST_1( corners(Matrix<float, 1, 1>()) );
89 CALL_SUBTEST_2( corners(Matrix4d()) );
90 CALL_SUBTEST_3( corners(Matrix<int,10,12>()) );
91 CALL_SUBTEST_4( corners(MatrixXcf(5, 7)) );
92 CALL_SUBTEST_5( corners(MatrixXf(21, 20)) );
93
94 CALL_SUBTEST_1(( corners_fixedsize<Matrix<float, 1, 1>, 1, 1, 0, 0>() ));
95 CALL_SUBTEST_2(( corners_fixedsize<Matrix4d,2,2,1,1>() ));
96 CALL_SUBTEST_3(( corners_fixedsize<Matrix<int,10,12>,4,7,5,2>() ));
97 }
98 }
99