1 // Copyright 2015-2019 Hans Dembinski
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)
7 #include <boost/core/lightweight_test.hpp>
8 #include <boost/histogram/axis/ostream.hpp>
9 #include <boost/histogram/axis/regular.hpp>
12 #include <type_traits>
13 #include "is_close.hpp"
14 #include "std_ostream.hpp"
15 #include "throw_exception.hpp"
16 #include "utility_axis.hpp"
17 #include "utility_str.hpp"
20 using namespace boost::histogram;
21 using def = use_default;
22 namespace tr = axis::transform;
24 BOOST_TEST(std::is_nothrow_move_assignable<axis::regular<>>::value);
25 BOOST_TEST(std::is_nothrow_move_constructible<axis::regular<>>::value);
29 BOOST_TEST_THROWS(axis::regular<>(1, 0, 0), std::invalid_argument);
30 BOOST_TEST_THROWS(axis::regular<>(0, 0, 1), std::invalid_argument);
33 // ctors and assignment
35 axis::regular<> a{4, -2, 2};
40 axis::regular<> c = std::move(b);
50 axis::regular<> a{4, -2, 2, "foo"};
51 BOOST_TEST_EQ(a.metadata(), "foo");
52 BOOST_TEST_EQ(static_cast<const axis::regular<>&>(a).metadata(), "foo");
54 BOOST_TEST_EQ(static_cast<const axis::regular<>&>(a).metadata(), "bar");
55 BOOST_TEST_EQ(a.value(0), -2);
56 BOOST_TEST_EQ(a.value(1), -1);
57 BOOST_TEST_EQ(a.value(2), 0);
58 BOOST_TEST_EQ(a.value(3), 1);
59 BOOST_TEST_EQ(a.value(4), 2);
60 BOOST_TEST_EQ(a.bin(-1).lower(), -std::numeric_limits<double>::infinity());
61 BOOST_TEST_EQ(a.bin(-1).upper(), -2);
62 BOOST_TEST_EQ(a.bin(a.size()).lower(), 2);
63 BOOST_TEST_EQ(a.bin(a.size()).upper(), std::numeric_limits<double>::infinity());
64 BOOST_TEST_EQ(a.index(-10.), -1);
65 BOOST_TEST_EQ(a.index(-2.1), -1);
66 BOOST_TEST_EQ(a.index(-2.0), 0);
67 BOOST_TEST_EQ(a.index(-1.1), 0);
68 BOOST_TEST_EQ(a.index(0.0), 2);
69 BOOST_TEST_EQ(a.index(0.9), 2);
70 BOOST_TEST_EQ(a.index(1.0), 3);
71 BOOST_TEST_EQ(a.index(10.), 4);
72 BOOST_TEST_EQ(a.index(-std::numeric_limits<double>::infinity()), -1);
73 BOOST_TEST_EQ(a.index(std::numeric_limits<double>::infinity()), 4);
74 BOOST_TEST_EQ(a.index(std::numeric_limits<double>::quiet_NaN()), 4);
77 "regular(4, -2, 2, metadata=\"bar\", options=underflow | overflow)");
80 // with inverted range
82 axis::regular<> a{2, 1, -2};
83 BOOST_TEST_EQ(a.bin(-1).lower(), std::numeric_limits<double>::infinity());
84 BOOST_TEST_EQ(a.bin(0).lower(), 1);
85 BOOST_TEST_EQ(a.bin(1).lower(), -0.5);
86 BOOST_TEST_EQ(a.bin(2).lower(), -2);
87 BOOST_TEST_EQ(a.bin(2).upper(), -std::numeric_limits<double>::infinity());
88 BOOST_TEST_EQ(a.index(2), -1);
89 BOOST_TEST_EQ(a.index(1.001), -1);
90 BOOST_TEST_EQ(a.index(1), 0);
91 BOOST_TEST_EQ(a.index(0), 0);
92 BOOST_TEST_EQ(a.index(-0.499), 0);
93 BOOST_TEST_EQ(a.index(-0.5), 1);
94 BOOST_TEST_EQ(a.index(-1), 1);
95 BOOST_TEST_EQ(a.index(-2), 2);
96 BOOST_TEST_EQ(a.index(-20), 2);
101 auto a = axis::regular<double, tr::log>{2, 1e0, 1e2};
102 BOOST_TEST_EQ(a.bin(-1).lower(), 0.0);
103 BOOST_TEST_IS_CLOSE(a.bin(0).lower(), 1.0, 1e-9);
104 BOOST_TEST_IS_CLOSE(a.bin(1).lower(), 10.0, 1e-9);
105 BOOST_TEST_IS_CLOSE(a.bin(2).lower(), 100.0, 1e-9);
106 BOOST_TEST_EQ(a.bin(2).upper(), std::numeric_limits<double>::infinity());
108 BOOST_TEST_EQ(a.index(-1), 2); // produces NaN in conversion
109 BOOST_TEST_EQ(a.index(0), -1);
110 BOOST_TEST_EQ(a.index(1), 0);
111 BOOST_TEST_EQ(a.index(9), 0);
112 BOOST_TEST_EQ(a.index(10), 1);
113 BOOST_TEST_EQ(a.index(90), 1);
114 BOOST_TEST_EQ(a.index(100), 2);
115 BOOST_TEST_EQ(a.index(std::numeric_limits<double>::infinity()), 2);
117 BOOST_TEST_THROWS((axis::regular<double, tr::log>{2, -1, 0}), std::invalid_argument);
119 BOOST_TEST_EQ(str(a), "regular_log(2, 1, 100, options=underflow | overflow)");
122 // with sqrt transform
124 axis::regular<double, tr::sqrt> a(2, 0, 4);
125 // this is weird, but -inf * -inf = inf, thus the lower bound
126 BOOST_TEST_EQ(a.bin(-1).lower(), std::numeric_limits<double>::infinity());
127 BOOST_TEST_IS_CLOSE(a.bin(0).lower(), 0.0, 1e-9);
128 BOOST_TEST_IS_CLOSE(a.bin(1).lower(), 1.0, 1e-9);
129 BOOST_TEST_IS_CLOSE(a.bin(2).lower(), 4.0, 1e-9);
130 BOOST_TEST_EQ(a.bin(2).upper(), std::numeric_limits<double>::infinity());
132 BOOST_TEST_EQ(a.index(-1), 2); // produces NaN in conversion
133 BOOST_TEST_EQ(a.index(0), 0);
134 BOOST_TEST_EQ(a.index(0.99), 0);
135 BOOST_TEST_EQ(a.index(1), 1);
136 BOOST_TEST_EQ(a.index(3.99), 1);
137 BOOST_TEST_EQ(a.index(4), 2);
138 BOOST_TEST_EQ(a.index(100), 2);
139 BOOST_TEST_EQ(a.index(std::numeric_limits<double>::infinity()), 2);
141 BOOST_TEST_EQ(str(a), "regular_sqrt(2, 0, 4, options=underflow | overflow)");
144 // with pow transform
146 axis::regular<double, tr::pow> a(tr::pow{0.5}, 2, 0, 4);
147 // this is weird, but -inf * -inf = inf, thus the lower bound
148 BOOST_TEST_EQ(a.bin(-1).lower(), std::numeric_limits<double>::infinity());
149 BOOST_TEST_IS_CLOSE(a.bin(0).lower(), 0.0, 1e-9);
150 BOOST_TEST_IS_CLOSE(a.bin(1).lower(), 1.0, 1e-9);
151 BOOST_TEST_IS_CLOSE(a.bin(2).lower(), 4.0, 1e-9);
152 BOOST_TEST_EQ(a.bin(2).upper(), std::numeric_limits<double>::infinity());
154 BOOST_TEST_EQ(a.index(-1), 2); // produces NaN in conversion
155 BOOST_TEST_EQ(a.index(0), 0);
156 BOOST_TEST_EQ(a.index(0.99), 0);
157 BOOST_TEST_EQ(a.index(1), 1);
158 BOOST_TEST_EQ(a.index(3.99), 1);
159 BOOST_TEST_EQ(a.index(4), 2);
160 BOOST_TEST_EQ(a.index(100), 2);
161 BOOST_TEST_EQ(a.index(std::numeric_limits<double>::infinity()), 2);
163 BOOST_TEST_EQ(str(a),
164 "regular_pow(2, 0, 4, options=underflow | overflow, power=0.5)");
169 axis::regular<> a(axis::step(0.5), 1, 3);
170 BOOST_TEST_EQ(a.size(), 4);
171 BOOST_TEST_EQ(a.bin(-1).lower(), -std::numeric_limits<double>::infinity());
172 BOOST_TEST_EQ(a.value(0), 1);
173 BOOST_TEST_EQ(a.value(1), 1.5);
174 BOOST_TEST_EQ(a.value(2), 2);
175 BOOST_TEST_EQ(a.value(3), 2.5);
176 BOOST_TEST_EQ(a.value(4), 3);
177 BOOST_TEST_EQ(a.bin(4).upper(), std::numeric_limits<double>::infinity());
179 axis::regular<> b(axis::step(0.5), 1, 3.1);
183 // with circular option
185 axis::circular<> a{4, 0, 1};
186 BOOST_TEST_EQ(a.bin(-1).lower(), a.bin(a.size() - 1).lower() - 1);
187 BOOST_TEST_EQ(a.index(-1.0 * 3), 0);
188 BOOST_TEST_EQ(a.index(0.0), 0);
189 BOOST_TEST_EQ(a.index(0.25), 1);
190 BOOST_TEST_EQ(a.index(0.5), 2);
191 BOOST_TEST_EQ(a.index(0.75), 3);
192 BOOST_TEST_EQ(a.index(1.0), 0);
193 BOOST_TEST_EQ(a.index(std::numeric_limits<double>::infinity()), 4);
194 BOOST_TEST_EQ(a.index(-std::numeric_limits<double>::infinity()), 4);
195 BOOST_TEST_EQ(a.index(std::numeric_limits<double>::quiet_NaN()), 4);
200 axis::regular<double, def, def, axis::option::growth_t> a{1, 0, 1};
201 BOOST_TEST_EQ(a.size(), 1);
202 BOOST_TEST_EQ(a.update(0), std::make_pair(0, 0));
203 BOOST_TEST_EQ(a.size(), 1);
204 BOOST_TEST_EQ(a.update(1), std::make_pair(1, -1));
205 BOOST_TEST_EQ(a.size(), 2);
206 BOOST_TEST_EQ(a.value(0), 0);
207 BOOST_TEST_EQ(a.value(2), 2);
208 BOOST_TEST_EQ(a.update(-1), std::make_pair(0, 1));
209 BOOST_TEST_EQ(a.size(), 3);
210 BOOST_TEST_EQ(a.value(0), -1);
211 BOOST_TEST_EQ(a.value(3), 2);
212 BOOST_TEST_EQ(a.update(-10), std::make_pair(0, 9));
213 BOOST_TEST_EQ(a.size(), 12);
214 BOOST_TEST_EQ(a.value(0), -10);
215 BOOST_TEST_EQ(a.value(12), 2);
216 BOOST_TEST_EQ(a.update(std::numeric_limits<double>::infinity()),
217 std::make_pair(a.size(), 0));
218 BOOST_TEST_EQ(a.update(std::numeric_limits<double>::quiet_NaN()),
219 std::make_pair(a.size(), 0));
220 BOOST_TEST_EQ(a.update(-std::numeric_limits<double>::infinity()),
221 std::make_pair(-1, 0));
226 test_axis_iterator(axis::regular<>(5, 0, 1), 0, 5);
227 test_axis_iterator(axis::regular<double, def, def, axis::option::none_t>(5, 0, 1), 0,
229 test_axis_iterator(axis::circular<>(5, 0, 1), 0, 5);
232 // bin_type streamable
234 auto test = [](const auto& x, const char* ref) {
235 std::ostringstream os;
237 BOOST_TEST_EQ(os.str(), std::string(ref));
240 auto a = axis::regular<>(2, 0, 1);
241 test(a.bin(0), "[0, 0.5)");
244 // null_type streamable
246 auto a = axis::regular<float, def, axis::null_type>(2, 0, 1);
247 BOOST_TEST_EQ(str(a), "regular(2, 0, 1, options=underflow | overflow)");
252 using A = axis::regular<>;
254 auto b = A(a, 1, 4, 1);
255 BOOST_TEST_EQ(b.size(), 3);
256 BOOST_TEST_EQ(b.value(0), 1);
257 BOOST_TEST_EQ(b.value(3), 4);
258 auto c = A(a, 0, 4, 2);
259 BOOST_TEST_EQ(c.size(), 2);
260 BOOST_TEST_EQ(c.value(0), 0);
261 BOOST_TEST_EQ(c.value(2), 4);
262 auto e = A(a, 1, 5, 2);
263 BOOST_TEST_EQ(e.size(), 2);
264 BOOST_TEST_EQ(e.value(0), 1);
265 BOOST_TEST_EQ(e.value(2), 5);
268 // shrink and rebin with circular option
270 using A = axis::circular<>;
272 BOOST_TEST_THROWS(A(a, 1, 4, 1), std::invalid_argument);
273 BOOST_TEST_THROWS(A(a, 0, 3, 1), std::invalid_argument);
274 auto b = A(a, 0, 4, 2);
275 BOOST_TEST_EQ(b.size(), 2);
276 BOOST_TEST_EQ(b.value(0), 1);
277 BOOST_TEST_EQ(b.value(2), 5);
280 return boost::report_errors();