假:如果a小于b。 下面是C++中std::greater_equal的图示: 程序1: // C++ program to illustrategreater_equal#include<algorithm>#include<functional>#include<iostream>usingnamespacestd;// Function to print the array arr[]voidprint
若x>=y则为true,否则为false。 注意 若一或两个参数为 NaN ,则浮点数的内建operator>=可能引发FE_INVALID。此函数是operator>=的“安静”版本。 参阅 greater_equal 实现x>=y的函数对象 (类模板) islessequal (C++11) 检查第一个浮点实参是否小于或等于第二个 (函数)...
std::greater_equal::operator() booloperator()(constT&lhs,constT&rhs)const; (C++14 起为constexpr) 检查lhs是否大于 或等于rhs。 参数 lhs, rhs-要比较的值 返回值 lhs>=rhs。 如果T是指针类型,那么结果会与由实现定义的指针严格全序保持一致。
bool isgreaterequal( float x, float y ); (1) (since C++11) bool isgreaterequal( double x, double y ); (2) (since C++11) bool isgreaterequal( long double x, long double y ); (3) (since C++11) bool isgreaterequal( Arithmetic x, Arithmetic y ); (4) (since C++11) ...
std::greater_equal<void> Defined in header<functional> template<> classgreater_equal<void>; (since C++14) std::greater_equal<void>is a specialization ofstd::greater_equalwith parameter and return type deduced. Nested types Nested typeDefinition ...
std::not_equal_to<T> 不等比较 2.1. 使用 std::greater 进行降序排序 #include <iostream> #include <vector> #include <algorithm> #include <functional> // std::greater using namespace std; int main() { vector<int> v = {5, 3, 4, 1, 2}; sort(v.begin(), v.end(), greater<int>...
struct ratio_greater_equal : std::integral_constant<bool, /* see below */> { }; (since C++11) If the ratio R1 is greater than or equal to the ratio R2, provides the member constant value equal true. Otherwise, value is false. Helper...
std::greater_equal<void> std::hash std::hash std::hash <std::optional> std::hash <std::unique_ptr> std::hash <std::variant> std::hash(std::shared_ptr) std::hash::hash std::hash<std::error_code> std::hash<std::error_condition> std::hash<std::type_index> std::has_unique_...
bool isgreaterequal( double x, double y ); (2) (C++11 起) bool isgreaterequal( long double x, long double y ); (3) (C++11 起) bool isgreaterequal( Arithmetic x, Arithmetic y ); (4) (C++11 起) 1-3) 确定浮点数 x 是否大于或等于浮点数 y ,而不设置浮点异常。4...
-1>0u;// truestd::cmp_greater(-1, 0u);// false It is a compile-time error if eitherTorUis a non-integertype, a character type, orbool. Parameters Return value 1)trueiftis equal tou. 2)trueiftis not equal tou. 3)trueiftis less thanu. ...