1// Boost.Geometry
2// Unit Test
3
4// Copyright (c) 2015 Oracle and/or its affiliates.
5
6// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
7
8// Use, modification and distribution is subject to the Boost Software License,
9// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11
12
13#include <geometry_test_common.hpp>
14
15#include <limits>
16#include <boost/geometry/util/condition.hpp>
17#include <boost/geometry/util/math.hpp>
18
19namespace bgm = bg::math;
20
21template <typename T>
22void test_all()
23{
24 BOOST_CHECK(bgm::equals(0, 0));
25 BOOST_CHECK(bgm::equals(1, 1));
26 BOOST_CHECK(bgm::equals(123456, 123456));
27
28 T eps = std::numeric_limits<T>::epsilon();
29 if ( eps > 0 )
30 {
31 BOOST_CHECK(bgm::equals(0, 0+eps));
32 BOOST_CHECK(bgm::equals(0+eps, 0));
33 BOOST_CHECK(bgm::equals(1, 1+eps));
34 BOOST_CHECK(bgm::equals(1+eps, 1));
35 BOOST_CHECK(bgm::equals(12345+eps, 12345));
36 }
37
38 if (BOOST_GEOMETRY_CONDITION(std::numeric_limits<T>::has_infinity))
39 {
40 T inf = std::numeric_limits<T>::infinity();
41 BOOST_CHECK(!bgm::equals(0, inf));
42 BOOST_CHECK(!bgm::equals(0, -inf));
43 BOOST_CHECK(!bgm::equals(1, inf));
44 BOOST_CHECK(!bgm::equals(1, -inf));
45 BOOST_CHECK(!bgm::equals(12345, inf));
46 BOOST_CHECK(!bgm::equals(12345, -inf));
47 BOOST_CHECK(!bgm::equals(inf, 0));
48 BOOST_CHECK(!bgm::equals(-inf, 0));
49 BOOST_CHECK(!bgm::equals(inf, 1));
50 BOOST_CHECK(!bgm::equals(-inf, 1));
51 BOOST_CHECK(!bgm::equals(inf, 12345));
52 BOOST_CHECK(!bgm::equals(-inf, 12345));
53 BOOST_CHECK(bgm::equals(inf, inf));
54 BOOST_CHECK(bgm::equals(-inf, -inf));
55 BOOST_CHECK(!bgm::equals(inf, -inf));
56 BOOST_CHECK(!bgm::equals(-inf, inf));
57 }
58
59 if (BOOST_GEOMETRY_CONDITION(std::numeric_limits<T>::has_quiet_NaN))
60 {
61 T nan = std::numeric_limits<T>::quiet_NaN();
62 BOOST_CHECK(!bgm::equals(0, nan));
63 BOOST_CHECK(!bgm::equals(nan, 0));
64 BOOST_CHECK(!bgm::equals(nan, nan));
65 BOOST_CHECK(!bgm::equals(1, nan));
66 BOOST_CHECK(!bgm::equals(nan, 1));
67 BOOST_CHECK(!bgm::equals(12345, nan));
68 BOOST_CHECK(!bgm::equals(nan, 12345));
69 }
70}
71
72int test_main(int, char* [])
73{
74 test_all<int>();
75 test_all<float>();
76 test_all<double>();
77
78 return 0;
79}
80

source code of boost/libs/geometry/test/util/math_equals.cpp