1 // Copyright 2018 Hans Dembinski
2 //
3 // Distributed under the Boost Software License, Version 1.0.
4 // (See accompanying file LICENSE_1_0.txt
5 // or copy at http://www.boost.org/LICENSE_1_0.txt)
6
7 #include <boost/core/lightweight_test.hpp>
8 #include <boost/histogram/axis/ostream.hpp>
9 #include <boost/histogram/axis/regular.hpp>
10 #include "throw_exception.hpp"
11 #include <boost/histogram/histogram.hpp>
12 #include <boost/histogram/indexed.hpp>
13 #include <boost/histogram/literals.hpp>
14 #include <boost/histogram/make_histogram.hpp>
15 #include <boost/histogram/ostream.hpp>
16 #include <boost/units/quantity.hpp>
17 #include <boost/units/systems/si/length.hpp>
18 #include <limits>
19 #include "is_close.hpp"
20
21 using namespace boost::histogram;
22 using namespace boost::histogram::literals;
23 namespace tr = axis::transform;
24
main()25 int main() {
26 using namespace boost::units;
27 using Q = quantity<si::length>;
28
29 // axis::regular with quantity
30 {
31 axis::regular<Q> b(2, 0 * si::meter, 2 * si::meter);
32 BOOST_TEST_EQ(b.bin(-1).lower() / si::meter,
33 -std::numeric_limits<double>::infinity());
34 BOOST_TEST_IS_CLOSE(b.bin(0).lower() / si::meter, 0.0, 1e-9);
35 BOOST_TEST_IS_CLOSE(b.bin(1).lower() / si::meter, 1.0, 1e-9);
36 BOOST_TEST_IS_CLOSE(b.bin(2).lower() / si::meter, 2.0, 1e-9);
37 BOOST_TEST_EQ(b.bin(2).upper() / si::meter, std::numeric_limits<double>::infinity());
38
39 BOOST_TEST_EQ(b.index(-std::numeric_limits<double>::infinity() * si::meter), -1);
40 BOOST_TEST_EQ(b.index(-1 * si::meter), -1); // produces NaN in conversion
41 BOOST_TEST_EQ(b.index(0 * si::meter), 0);
42 BOOST_TEST_EQ(b.index(0.99 * si::meter), 0);
43 BOOST_TEST_EQ(b.index(1 * si::meter), 1);
44 BOOST_TEST_EQ(b.index(1.99 * si::meter), 1);
45 BOOST_TEST_EQ(b.index(2 * si::meter), 2);
46 BOOST_TEST_EQ(b.index(100 * si::meter), 2);
47 BOOST_TEST_EQ(b.index(std::numeric_limits<double>::infinity() * si::meter), 2);
48 }
49
50 // axis::regular with quantity and transform
51 {
52 axis::regular<Q, tr::log> b(2, 1 * si::meter, 10 * si::meter);
53 BOOST_TEST_EQ(b.value(-1) / si::meter, 0);
54 BOOST_TEST_IS_CLOSE(b.value(0) / si::meter, 1.0, 1e-9);
55 BOOST_TEST_IS_CLOSE(b.value(1) / si::meter, 3.1623, 1e-3);
56 BOOST_TEST_IS_CLOSE(b.value(2) / si::meter, 10.0, 1e-9);
57 BOOST_TEST_EQ(b.value(3) / si::meter, std::numeric_limits<double>::infinity());
58 }
59
60 // histogram with quantity axis
61 {
62 auto h = make_histogram(axis::regular<Q>(2, 0 * si::meter, 1 * si::meter),
63 axis::regular<>(2, 0, 1));
64 h(0.1 * si::meter, 0.1); // fills bin (0, 0)
65 BOOST_TEST_EQ(h.at(0, 0), 1);
66 for (auto&& x : indexed(h)) {
67 BOOST_TEST_THROWS(x.density(), std::runtime_error); // cannot use density method
68 BOOST_TEST_EQ(x.index(0), 2.0 * x.bin(0_c).lower() / si::meter);
69 BOOST_TEST_EQ(x.index(1), 2.0 * x.bin(1_c).lower());
70 }
71 }
72
73 return boost::report_errors();
74 }
75