multi_array/test/reverse_view.cpp

44 lines
1.1 KiB
C++

// Copyright 2002 The Trustees of Indiana University.
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// Boost.MultiArray Library
// Authors: Ronald Garcia
// Jeremy Siek
// Andrew Lumsdaine
// See http://www.boost.org/libs/multi_array for documentation.
//
// reverse_view.cpp - a small test of creating a view with negative strides
//
#include <boost/multi_array.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/array.hpp>
int
main()
{
using namespace boost;
// One-dimensional array with views
double data[] = { 1, 2, 3, 4 };
double rdata[] = { 4, 3, 2, 1 };
typedef multi_array< double, 1 > array;
array A(extents[4]);
A.assign(data,data+4);
typedef array::index_range range;
array::array_view<1>::type B = A[indices[range(3, -1, -1)]];
for(multi_array_types::size_type i = 0; i != B.size(); ++i) {
BOOST_TEST(B[i] == rdata[i]);
}
return boost::report_errors();
}