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// Copyright 2018 Hans Dembinski
//
// 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)
#include <algorithm>
#include <boost/core/lightweight_test.hpp>
#include <boost/histogram/axis/integer.hpp>
#include <boost/histogram/axis/ostream.hpp>
#include <boost/histogram/axis/variable.hpp>
#include <boost/histogram/histogram.hpp>
#include <boost/histogram/indexed.hpp>
#include <boost/histogram/literals.hpp>
#include <boost/histogram/ostream.hpp>
#include <boost/mp11/algorithm.hpp>
#include <boost/mp11/list.hpp>
#include <iterator>
#include <ostream>
#include <type_traits>
#include <vector>
#include "throw_exception.hpp"
#include "utility_histogram.hpp"
using namespace boost::histogram;
using namespace boost::histogram::literals;
using namespace boost::mp11;
template <class Tag, class Coverage>
void run_1d_tests(mp_list<Tag, Coverage>) {
auto h = make(Tag(), axis::integer<>(0, 3));
h(-1, weight(1));
h(0, weight(2));
h(1, weight(3));
h(2, weight(4));
h(3, weight(5));
auto ind = indexed(h, Coverage());
auto it = ind.begin();
BOOST_TEST_EQ(it->indices().size(), 1);
BOOST_TEST_EQ(it->indices()[0], Coverage() == coverage::all ? -1 : 0);
if (Coverage() == coverage::all) {
BOOST_TEST_EQ(it->index(0), -1);
BOOST_TEST_EQ(**it, 1);
BOOST_TEST_EQ(it->bin(0), h.axis().bin(-1));
++it;
}
BOOST_TEST_EQ(it->index(0), 0);
BOOST_TEST_EQ(**it, 2);
BOOST_TEST_EQ(it->bin(0), h.axis().bin(0));
++it;
BOOST_TEST_EQ(it->index(0), 1);
BOOST_TEST_EQ(**it, 3);
BOOST_TEST_EQ(it->bin(0), h.axis().bin(1));
++it;
// check post-increment
auto prev = it++;
BOOST_TEST_EQ(prev->index(0), 2);
BOOST_TEST_EQ(**prev, 4);
BOOST_TEST_EQ(prev->bin(0), h.axis().bin(2));
if (Coverage() == coverage::all) {
BOOST_TEST_EQ(it->index(0), 3);
BOOST_TEST_EQ(**it, 5);
BOOST_TEST_EQ(it->bin(0), h.axis().bin(3));
++it;
}
BOOST_TEST(it == ind.end());
for (auto&& x : indexed(h, Coverage())) *x = 0;
for (auto&& x : indexed(static_cast<const decltype(h)&>(h), Coverage()))
BOOST_TEST_EQ(*x, 0);
}
template <class Tag, class Coverage>
void run_3d_tests(mp_list<Tag, Coverage>) {
auto h = make_s(Tag(), std::vector<int>(), axis::integer<>(0, 2),
axis::integer<int, axis::null_type, axis::option::none_t>(0, 3),
axis::integer<int, axis::null_type, axis::option::overflow_t>(0, 4));
for (int i = -1; i < 3; ++i)
for (int j = -1; j < 4; ++j)
for (int k = -1; k < 5; ++k) h(i, j, k, weight(i * 100 + j * 10 + k));
auto ind = indexed(h, Coverage());
auto it = ind.begin();
BOOST_TEST_EQ(it->indices().size(), 3);
const int d = Coverage() == coverage::all;
// imitate iteration order of indexed loop
for (int k = 0; k < 4 + d; ++k)
for (int j = 0; j < 3; ++j)
for (int i = -d; i < 2 + d; ++i) {
BOOST_TEST_EQ(it->index(0), i);
BOOST_TEST_EQ(it->index(1), j);
BOOST_TEST_EQ(it->index(2), k);
BOOST_TEST_EQ(it->bin(0_c), h.axis(0_c).bin(i));
BOOST_TEST_EQ(it->bin(1_c), h.axis(1_c).bin(j));
BOOST_TEST_EQ(it->bin(2_c), h.axis(2_c).bin(k));
BOOST_TEST_EQ(**it, i * 100 + j * 10 + k);
++it;
}
BOOST_TEST(it == ind.end());
}
template <class Tag, class Coverage>
void run_density_tests(mp_list<Tag, Coverage>) {
auto ax = axis::variable<>({0.0, 0.1, 0.3, 0.6});
auto ay = axis::integer<int>(0, 2);
auto az = ax;
auto h = make_s(Tag(), std::vector<int>(), ax, ay, az);
// fill uniformly
for (auto&& x : h) x = 1;
for (auto&& x : indexed(h, Coverage())) {
BOOST_TEST_EQ(x.density(), *x / (x.bin(0).width() * x.bin(2).width()));
}
}
template <class Tag, class Coverage>
void run_stdlib_tests(mp_list<Tag, Coverage>) {
auto ax = axis::regular<>(3, 0, 1);
auto ay = axis::integer<>(0, 2);
auto h = make_s(Tag(), std::array<int, 20>(), ax, ay);
struct generator {
int i = 0;
int operator()() { return ++i; }
};
auto ind = indexed(h, Coverage());
std::generate(ind.begin(), ind.end(), generator{});
{
int i = 0;
for (auto&& x : ind) BOOST_TEST_EQ(*x, ++i);
}
{
auto it = std::min_element(ind.begin(), ind.end());
BOOST_TEST(it == ind.begin());
BOOST_TEST(it != ind.end());
}
{
auto it = std::max_element(ind.begin(), ind.end());
// get last before end()
auto it2 = ind.begin();
auto it3 = it2;
while (it2 != ind.end()) it3 = it2++;
BOOST_TEST(it == it3);
BOOST_TEST(it != ind.begin());
}
}
int main() {
mp_for_each<mp_product<mp_list, mp_list<static_tag, dynamic_tag>,
mp_list<std::integral_constant<coverage, coverage::inner>,
std::integral_constant<coverage, coverage::all>>>>(
[](auto&& x) {
run_1d_tests(x);
run_3d_tests(x);
run_density_tests(x);
run_stdlib_tests(x);
});
return boost::report_errors();
}
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