实现功能

boost::geometry::math::equals用法的测试程序

C++实现代码

#include <geometry_test_common.hpp>
#include <limits>
#include <boost/geometry/util/condition.hpp>
#include <boost/geometry/util/math.hpp>
namespace bgm = bg::math;
template <typename T>
void test_all()
{BOOST_CHECK(bgm::equals(0, 0));BOOST_CHECK(bgm::equals(1, 1));BOOST_CHECK(bgm::equals(123456, 123456));    T eps = std::numeric_limits<T>::epsilon();if ( eps > 0 ){BOOST_CHECK(bgm::equals(0, 0+eps));BOOST_CHECK(bgm::equals(0+eps, 0));BOOST_CHECK(bgm::equals(1, 1+eps));BOOST_CHECK(bgm::equals(1+eps, 1));BOOST_CHECK(bgm::equals(12345+eps, 12345));}if (BOOST_GEOMETRY_CONDITION(std::numeric_limits<T>::has_infinity)){T inf = std::numeric_limits<T>::infinity();BOOST_CHECK(!bgm::equals(0, inf));BOOST_CHECK(!bgm::equals(0, -inf));BOOST_CHECK(!bgm::equals(1, inf));BOOST_CHECK(!bgm::equals(1, -inf));BOOST_CHECK(!bgm::equals(12345, inf));BOOST_CHECK(!bgm::equals(12345, -inf));BOOST_CHECK(!bgm::equals(inf, 0));BOOST_CHECK(!bgm::equals(-inf, 0));BOOST_CHECK(!bgm::equals(inf, 1));BOOST_CHECK(!bgm::equals(-inf, 1));BOOST_CHECK(!bgm::equals(inf, 12345));BOOST_CHECK(!bgm::equals(-inf, 12345));BOOST_CHECK(bgm::equals(inf, inf));BOOST_CHECK(bgm::equals(-inf, -inf));BOOST_CHECK(!bgm::equals(inf, -inf));BOOST_CHECK(!bgm::equals(-inf, inf));}if (BOOST_GEOMETRY_CONDITION(std::numeric_limits<T>::has_quiet_NaN)){T nan = std::numeric_limits<T>::quiet_NaN();BOOST_CHECK(!bgm::equals(0, nan));BOOST_CHECK(!bgm::equals(nan, 0));BOOST_CHECK(!bgm::equals(nan, nan));BOOST_CHECK(!bgm::equals(1, nan));BOOST_CHECK(!bgm::equals(nan, 1));BOOST_CHECK(!bgm::equals(12345, nan));BOOST_CHECK(!bgm::equals(nan, 12345));}
}int test_main(int, char* [])
{test_all<int>();test_all<float>();test_all<double>();   return 0;
}

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boost::geometry::math::equals用法的测试程序

boost::geometry::math::equals用法的测试程序

实现功能

C++实现代码

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