calendar.h ~ calendar ~ compare

constexpr int compare(const datetime_type &left, const datetime_type &right) noexcept;
constexpr int compare(const duration_type &left, const duration_type &right) noexcept;

Description

Compares two datetime_type or duration_type.

Parameters

(Mandatory)

• left
• rigth

Return value

• -1 if left is chronologically before right,
• +1 if left is chronologically after right,
• 0 if left equals right.

Exceptions

Never throws exception.

Examples

#include <iostream>
#include <JLC/JLC.h>
using namespace JLC;
using typename calendar::datetime_type;

int main(){
    constexpr datetime_type date1 = calendar::make_datetime(1000,1,1);
    constexpr datetime_type date2 = calendar::make_datetime(2000,2,2);
    std::cout << calendar::compare(date1,date2) << std::endl;
    std::cout << calendar::compare(date2,date1) << std::endl;
    std::cout << calendar::compare(date2,date2) << std::endl;
}

-1
1
0

See also

• calendar::datetime_type
• calendar::duration_type
• calendar::equals
• namespace calendar