ceph/src/boost/libs/geometry/test/util/math_equals.cpp

   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
  19 namespace bgm = bg::math;
  20
  21 template <typename T>
  22 void 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
  72 int test_main(int, char* [])
  73 {
  74     test_all<int>();
  75     test_all<float>();
  76     test_all<double>();
  77
  78     return 0;
  79 }