本文整理汇总了C++中Rational::to_double方法的典型用法代码示例。如果您正苦于以下问题：C++ Rational::to_double方法的具体用法？C++ Rational::to_double怎么用？C++ Rational::to_double使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Rational的用法示例。
在下文中一共展示了Rational::to_double方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: GIVEN
#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include <Rational.h>
#include <doctest.h>
#include <limits>
SCENARIO( "convert a rational to a double") {
// CHECK (275 == doctest::Approx(actual));
GIVEN ("a valid rational number") {
WHEN("the Rational is 0") {
Rational<int> r {0};
THEN( "the value should convert to 0" ) {
REQUIRE (r.to_double() == 0);
//REQUIRE (double(r) == 0);
}
}
WHEN("the rational is 1/2") {
Rational<int> r {1,2};
THEN( "the value should convert to 0.5" ) {
REQUIRE (r.to_double() == doctest::Approx(0.5));
//REQUIRE (double(r) == doctest::Approx(0.5));
}
}
WHEN("the rational is {-22,7}") {
Rational<int> r {-22,7};
THEN( "the value should convert to -pi" ) {
REQUIRE (r.to_double() == doctest::Approx(-3.14).epsilon(0.01));
//REQUIRE (double(r) == doctest::Approx(-3.14).epsilon(0.01));
}
}示例2:
bool operator <( Rational const & a , Rational const & b ) {
return a.to_double() < b.to_double();
}