1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2008 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
matrixVisitor(const MatrixType & p)12 template<typename MatrixType> void matrixVisitor(const MatrixType& p)
13 {
14 typedef typename MatrixType::Scalar Scalar;
15 typedef typename MatrixType::Index Index;
16
17 Index rows = p.rows();
18 Index cols = p.cols();
19
20 // construct a random matrix where all coefficients are different
21 MatrixType m;
22 m = MatrixType::Random(rows, cols);
23 for(Index i = 0; i < m.size(); i++)
24 for(Index i2 = 0; i2 < i; i2++)
25 while(m(i) == m(i2)) // yes, ==
26 m(i) = internal::random<Scalar>();
27
28 Scalar minc = Scalar(1000), maxc = Scalar(-1000);
29 Index minrow=0,mincol=0,maxrow=0,maxcol=0;
30 for(Index j = 0; j < cols; j++)
31 for(Index i = 0; i < rows; i++)
32 {
33 if(m(i,j) < minc)
34 {
35 minc = m(i,j);
36 minrow = i;
37 mincol = j;
38 }
39 if(m(i,j) > maxc)
40 {
41 maxc = m(i,j);
42 maxrow = i;
43 maxcol = j;
44 }
45 }
46 Index eigen_minrow, eigen_mincol, eigen_maxrow, eigen_maxcol;
47 Scalar eigen_minc, eigen_maxc;
48 eigen_minc = m.minCoeff(&eigen_minrow,&eigen_mincol);
49 eigen_maxc = m.maxCoeff(&eigen_maxrow,&eigen_maxcol);
50 VERIFY(minrow == eigen_minrow);
51 VERIFY(maxrow == eigen_maxrow);
52 VERIFY(mincol == eigen_mincol);
53 VERIFY(maxcol == eigen_maxcol);
54 VERIFY_IS_APPROX(minc, eigen_minc);
55 VERIFY_IS_APPROX(maxc, eigen_maxc);
56 VERIFY_IS_APPROX(minc, m.minCoeff());
57 VERIFY_IS_APPROX(maxc, m.maxCoeff());
58 }
59
vectorVisitor(const VectorType & w)60 template<typename VectorType> void vectorVisitor(const VectorType& w)
61 {
62 typedef typename VectorType::Scalar Scalar;
63 typedef typename VectorType::Index Index;
64
65 Index size = w.size();
66
67 // construct a random vector where all coefficients are different
68 VectorType v;
69 v = VectorType::Random(size);
70 for(Index i = 0; i < size; i++)
71 for(Index i2 = 0; i2 < i; i2++)
72 while(v(i) == v(i2)) // yes, ==
73 v(i) = internal::random<Scalar>();
74
75 Scalar minc = v(0), maxc = v(0);
76 Index minidx=0, maxidx=0;
77 for(Index i = 0; i < size; i++)
78 {
79 if(v(i) < minc)
80 {
81 minc = v(i);
82 minidx = i;
83 }
84 if(v(i) > maxc)
85 {
86 maxc = v(i);
87 maxidx = i;
88 }
89 }
90 Index eigen_minidx, eigen_maxidx;
91 Scalar eigen_minc, eigen_maxc;
92 eigen_minc = v.minCoeff(&eigen_minidx);
93 eigen_maxc = v.maxCoeff(&eigen_maxidx);
94 VERIFY(minidx == eigen_minidx);
95 VERIFY(maxidx == eigen_maxidx);
96 VERIFY_IS_APPROX(minc, eigen_minc);
97 VERIFY_IS_APPROX(maxc, eigen_maxc);
98 VERIFY_IS_APPROX(minc, v.minCoeff());
99 VERIFY_IS_APPROX(maxc, v.maxCoeff());
100
101 Index idx0 = internal::random<Index>(0,size-1);
102 Index idx1 = eigen_minidx;
103 Index idx2 = eigen_maxidx;
104 VectorType v1(v), v2(v);
105 v1(idx0) = v1(idx1);
106 v2(idx0) = v2(idx2);
107 v1.minCoeff(&eigen_minidx);
108 v2.maxCoeff(&eigen_maxidx);
109 VERIFY(eigen_minidx == (std::min)(idx0,idx1));
110 VERIFY(eigen_maxidx == (std::min)(idx0,idx2));
111 }
112
test_visitor()113 void test_visitor()
114 {
115 for(int i = 0; i < g_repeat; i++) {
116 CALL_SUBTEST_1( matrixVisitor(Matrix<float, 1, 1>()) );
117 CALL_SUBTEST_2( matrixVisitor(Matrix2f()) );
118 CALL_SUBTEST_3( matrixVisitor(Matrix4d()) );
119 CALL_SUBTEST_4( matrixVisitor(MatrixXd(8, 12)) );
120 CALL_SUBTEST_5( matrixVisitor(Matrix<double,Dynamic,Dynamic,RowMajor>(20, 20)) );
121 CALL_SUBTEST_6( matrixVisitor(MatrixXi(8, 12)) );
122 }
123 for(int i = 0; i < g_repeat; i++) {
124 CALL_SUBTEST_7( vectorVisitor(Vector4f()) );
125 CALL_SUBTEST_7( vectorVisitor(Matrix<int,12,1>()) );
126 CALL_SUBTEST_8( vectorVisitor(VectorXd(10)) );
127 CALL_SUBTEST_9( vectorVisitor(RowVectorXd(10)) );
128 CALL_SUBTEST_10( vectorVisitor(VectorXf(33)) );
129 }
130 }
131