1// Copyright (c) 2011 David Bellot
2//
3// Distributed under the Boost Software License, Version 1.0. (See
4// accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt)
6
7#include <cmath>
8#include <boost/numeric/ublas/traits/const_iterator_type.hpp>
9#include <boost/numeric/ublas/traits/iterator_type.hpp>
10#include <boost/numeric/ublas/traits/c_array.hpp>
11#include <boost/numeric/ublas/fwd.hpp>
12#include <boost/numeric/ublas/matrix.hpp>
13#include <boost/numeric/ublas/matrix_expression.hpp>
14#include <boost/numeric/ublas/operation/begin.hpp>
15#include <boost/numeric/ublas/operation/end.hpp>
16#include <boost/numeric/ublas/tags.hpp>
17#include <boost/numeric/ublas/vector.hpp>
18#include <boost/numeric/ublas/vector_expression.hpp>
19#include <iostream>
20#include "utils.hpp"
21
22
23static const double TOL(1.0e-5); ///< Used for comparing two real numbers.
24
25#ifdef BOOST_UBLAS_NO_NESTED_CLASS_RELATION
26#error "sorry this feature is not supported by your compiler"
27#endif
28
29BOOST_UBLAS_TEST_DEF( test_vector_iteration )
30{
31 BOOST_UBLAS_DEBUG_TRACE( "TEST Vector Iteration" );
32
33 typedef double value_type;
34 typedef boost::numeric::ublas::vector<value_type> vector_type;
35
36 vector_type v(5);
37
38 v(0) = 0.555950;
39 v(1) = 0.108929;
40 v(2) = 0.948014;
41 v(3) = 0.023787;
42 v(4) = 1.023787;
43
44
45 vector_type::size_type ix = 0;
46 for (
47 boost::numeric::ublas::iterator_type<vector_type>::type it = boost::numeric::ublas::begin<vector_type>(e&: v);
48 it != boost::numeric::ublas::end<vector_type>(e&: v);
49 ++it
50 ) {
51 BOOST_UBLAS_DEBUG_TRACE( "*it = " << *it << " ==> " << v(ix) );
52 BOOST_UBLAS_TEST_CHECK( std::abs(*it - v(ix)) <= TOL );
53 ++ix;
54 }
55}
56
57
58BOOST_UBLAS_TEST_DEF( test_vector_const_iteration )
59{
60 BOOST_UBLAS_DEBUG_TRACE( "TEST Vector Const Iteration" );
61
62 typedef double value_type;
63 typedef boost::numeric::ublas::vector<value_type> vector_type;
64
65 vector_type v(5);
66
67 v(0) = 0.555950;
68 v(1) = 0.108929;
69 v(2) = 0.948014;
70 v(3) = 0.023787;
71 v(4) = 1.023787;
72
73
74 vector_type::size_type ix = 0;
75 for (
76 boost::numeric::ublas::const_iterator_type<vector_type>::type it = boost::numeric::ublas::begin<vector_type>(e&: v);
77 it != boost::numeric::ublas::end<vector_type>(e&: v);
78 ++it
79 ) {
80 BOOST_UBLAS_DEBUG_TRACE( "*it = " << *it << " ==> " << v(ix) );
81 BOOST_UBLAS_TEST_CHECK( std::abs(*it - v(ix)) <= TOL );
82 ++ix;
83 }
84}
85
86
87BOOST_UBLAS_TEST_DEF( test_row_major_matrix_iteration )
88{
89 BOOST_UBLAS_DEBUG_TRACE( "TEST Row-major Matrix Iteration" );
90
91 typedef double value_type;
92 typedef boost::numeric::ublas::matrix<value_type, boost::numeric::ublas::row_major> matrix_type;
93 typedef boost::numeric::ublas::iterator_type<matrix_type, boost::numeric::ublas::tag::major>::type outer_iterator_type;
94 typedef boost::numeric::ublas::iterator_type<matrix_type, boost::numeric::ublas::tag::minor>::type inner_iterator_type;
95
96 matrix_type A(5,4);
97
98 A(0,0) = 0.555950; A(0,1) = 0.274690; A(0,2) = 0.540605; A(0,3) = 0.798938;
99 A(1,0) = 0.108929; A(1,1) = 0.830123; A(1,2) = 0.891726; A(1,3) = 0.895283;
100 A(2,0) = 0.948014; A(2,1) = 0.973234; A(2,2) = 0.216504; A(2,3) = 0.883152;
101 A(3,0) = 0.023787; A(3,1) = 0.675382; A(3,2) = 0.231751; A(3,3) = 0.450332;
102 A(4,0) = 1.023787; A(4,1) = 1.675382; A(4,2) = 1.231751; A(4,3) = 1.450332;
103
104
105 matrix_type::size_type row(0);
106 for (
107 outer_iterator_type outer_it = boost::numeric::ublas::begin<boost::numeric::ublas::tag::major>(e&: A);
108 outer_it != boost::numeric::ublas::end<boost::numeric::ublas::tag::major>(e&: A);
109 ++outer_it
110 ) {
111 matrix_type::size_type col(0);
112
113 for (
114 inner_iterator_type inner_it = boost::numeric::ublas::begin(it&: outer_it);
115 inner_it != boost::numeric::ublas::end(it&: outer_it);
116 ++inner_it
117 ) {
118 BOOST_UBLAS_DEBUG_TRACE( "*it = " << *inner_it << " ==> " << A(row,col) );
119 BOOST_UBLAS_TEST_CHECK( std::abs(*inner_it - A(row,col)) <= TOL );
120
121 ++col;
122 }
123
124 ++row;
125 }
126}
127
128
129BOOST_UBLAS_TEST_DEF( test_col_major_matrix_iteration )
130{
131 BOOST_UBLAS_DEBUG_TRACE( "TEST Column-major Matrix Iteration" );
132
133 typedef double value_type;
134 typedef boost::numeric::ublas::matrix<value_type, boost::numeric::ublas::column_major> matrix_type;
135 typedef boost::numeric::ublas::iterator_type<matrix_type, boost::numeric::ublas::tag::major>::type outer_iterator_type;
136 typedef boost::numeric::ublas::iterator_type<matrix_type, boost::numeric::ublas::tag::minor>::type inner_iterator_type;
137
138 matrix_type A(5,4);
139
140 A(0,0) = 0.555950; A(0,1) = 0.274690; A(0,2) = 0.540605; A(0,3) = 0.798938;
141 A(1,0) = 0.108929; A(1,1) = 0.830123; A(1,2) = 0.891726; A(1,3) = 0.895283;
142 A(2,0) = 0.948014; A(2,1) = 0.973234; A(2,2) = 0.216504; A(2,3) = 0.883152;
143 A(3,0) = 0.023787; A(3,1) = 0.675382; A(3,2) = 0.231751; A(3,3) = 0.450332;
144 A(4,0) = 1.023787; A(4,1) = 1.675382; A(4,2) = 1.231751; A(4,3) = 1.450332;
145
146
147 matrix_type::size_type col(0);
148 for (
149 outer_iterator_type outer_it = boost::numeric::ublas::begin<boost::numeric::ublas::tag::major>(e&: A);
150 outer_it != boost::numeric::ublas::end<boost::numeric::ublas::tag::major>(e&: A);
151 ++outer_it
152 ) {
153 matrix_type::size_type row(0);
154
155 for (
156 inner_iterator_type inner_it = boost::numeric::ublas::begin(it&: outer_it);
157 inner_it != boost::numeric::ublas::end(it&: outer_it);
158 ++inner_it
159 ) {
160 BOOST_UBLAS_DEBUG_TRACE( "*it = " << *inner_it << " ==> " << A(row,col) );
161 BOOST_UBLAS_TEST_CHECK( std::abs(*inner_it - A(row,col)) <= TOL );
162
163 ++row;
164 }
165
166 ++col;
167 }
168}
169
170
171int main()
172{
173 BOOST_UBLAS_TEST_BEGIN();
174
175 BOOST_UBLAS_TEST_DO( test_vector_iteration );
176 BOOST_UBLAS_TEST_DO( test_vector_const_iteration );
177 BOOST_UBLAS_TEST_DO( test_row_major_matrix_iteration );
178 BOOST_UBLAS_TEST_DO( test_col_major_matrix_iteration );
179
180 BOOST_UBLAS_TEST_END();
181}
182

source code of boost/libs/numeric/ublas/test/begin_end.cpp