ublas/test/test_coordinate_matrix_inplace_merge.cpp
2015-11-06 01:30:01 +01:00

119 lines
3.6 KiB
C++

// Copyright (c) 2011 David Bellot
//
// Distributed under 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)
#ifndef BOOST_UBLAS_NO_ELEMENT_PROXIES
# define BOOST_UBLAS_NO_ELEMENT_PROXIES
#endif
#include <boost/numeric/ublas/assignment.hpp>
#include <boost/numeric/ublas/matrix.hpp>
#include <boost/numeric/ublas/matrix_sparse.hpp>
#include <boost/numeric/ublas/matrix_expression.hpp>
#include <boost/numeric/ublas/io.hpp>
#include "common/testhelper.hpp"
#include "utils.hpp"
using std::cout;
using std::endl;
const double TOL = 1e-15;
template<typename T>
bool check_sortedness(const boost::numeric::ublas::coordinate_matrix<T>& matrix) {
bool result = true;
typedef boost::numeric::ublas::coordinate_matrix<T> matrix_type;
typename matrix_type::index_array_type i1 = matrix.index1_data();
typename matrix_type::index_array_type i2 = matrix.index2_data();
typename matrix_type::array_size_type size = matrix.filled();
for (typename matrix_type::array_size_type i = 0; i + 1 < size && result; ++ i) {
result &= ( (i1[i] < i1[i + 1]) ||
((i1[i] == i1[i]) &&
(i2[i] < i2[i + 1])) );
}
return result;
}
void print_entries(size_t size_x, size_t size_y,
const std::vector<std::pair<size_t, size_t> >& entries)
{
std::cerr << "Error - Size:" << size_x << " x " << size_y << ". Entries: ";
for (size_t i = 0; i < entries.size(); ++ i) {
std::cerr << entries[i].first << ", " << entries[i].second << "; ";
}
std::cerr << "\n";
}
BOOST_UBLAS_TEST_DEF( test_coordinate_matrix_inplace_merge_random )
{
const size_t max_repeats = 100;
const size_t max_size = 100;
const size_t dim_var = 10;
const size_t nr_entries = 10;
for (size_t repeats = 1; repeats < max_repeats; ++repeats ) {
for (size_t size = 1; size < max_size; size += 5) {
size_t size_x = size + rand() % dim_var;
size_t size_y = size + rand() % dim_var;
boost::numeric::ublas::coordinate_matrix<double> matrix_coord(size_x, size_y);
boost::numeric::ublas::matrix<double> matrix_dense(size_x, size_y, 0);
matrix_coord.sort();
std::vector<std::pair<size_t, size_t> > entries;
for (size_t entry = 0; entry < nr_entries; ++ entry) {
int x = rand() % size_x;
int y = rand() % size_y;
entries.push_back(std::make_pair(x, y));
matrix_coord.append_element(x, y, 1);
matrix_dense(x, y) += 1;
}
matrix_coord.sort();
{
bool sorted = check_sortedness(matrix_coord);
bool identical = compare_distance(matrix_coord, matrix_dense, TOL);
if (!(sorted && identical)) {
print_entries(size_x, size_y, entries);
}
BOOST_UBLAS_TEST_CHECK( check_sortedness(matrix_coord) );
BOOST_UBLAS_TEST_CHECK( compare_distance(matrix_coord, matrix_dense, TOL) );
}
for (size_t entry = 0; entry < nr_entries; ++ entry) {
int x = rand() % size_x;
int y = rand() % size_y;
entries.push_back(std::make_pair(x, y));
matrix_coord(x, y) += 1;
matrix_dense(x, y) += 1;
matrix_coord.sort();
}
{
bool sorted = check_sortedness(matrix_coord);
bool identical = compare_distance(matrix_coord, matrix_dense, TOL);
if (!(sorted && identical)) {
print_entries(size_x, size_y, entries);
}
BOOST_UBLAS_TEST_CHECK( sorted );
BOOST_UBLAS_TEST_CHECK( identical );
}
}
}
}
int main()
{
BOOST_UBLAS_TEST_BEGIN();
BOOST_UBLAS_TEST_DO( test_coordinate_matrix_inplace_merge_random );
BOOST_UBLAS_TEST_END();
}