1 // Copyright 2002 The Trustees of Indiana University.
2
3 // Use, modification and distribution is subject to the Boost Software
4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6
7 // Boost.MultiArray Library
8 // Authors: Ronald Garcia
9 // Jeremy Siek
10 // Andrew Lumsdaine
11 // See http://www.boost.org/libs/multi_array for documentation.
12
13 //
14 // reverse_view.cpp - a small test of creating a view with negative strides
15 //
16
17 #include <boost/multi_array.hpp>
18 #include <boost/core/lightweight_test.hpp>
19 #include <boost/array.hpp>
20
21 int
main()22 main()
23 {
24 using namespace boost;
25
26
27 // One-dimensional array with views
28 double data[] = { 1, 2, 3, 4 };
29 double rdata[] = { 4, 3, 2, 1 };
30
31 typedef multi_array< double, 1 > array;
32 array A(extents[4]);
33 A.assign(data,data+4);
34
35 typedef array::index_range range;
36 array::array_view<1>::type B = A[indices[range(3, -1, -1)]];
37
38 for(multi_array_types::size_type i = 0; i != B.size(); ++i) {
39 BOOST_TEST(B[i] == rdata[i]);
40 }
41
42 return boost::report_errors();
43 }
44