std::chrono::duration<Rep,Period>::operator+(unary), (3) - Linux Man Pages

std::chrono::duration<Rep,Period>::operator+(unary),: std::chrono::duration<Rep,Period>::operator+(unary),

NAME

std::chrono::duration<Rep,Period>::operator+(unary), - std::chrono::duration<Rep,Period>::operator+(unary),

Synopsis


constexpr duration operator+() const;                    (until C++17)
constexpr std::common_type_t<duration>                   (since C++17)
operator+() const;                               (1)
constexpr duration operator-() const;                                  (until C++17)
constexpr std::common_type_t<duration>               (2)               (since C++17)
operator-() const;


Implements unary plus and unary minus for the durations.


If rep_ is a member variable holding the number of ticks in a duration object, and D
is the return type,


1) Equivalent to return D(*this);
2) Equivalent to return D(-rep_);

Parameters


(none)

Return value


1) a copy of this duration object
2) a copy of this duration object, with the number of ticks negated

Example


// Run this code


 #include <chrono>
 #include <iostream>


 int main()
 {
  std::chrono::seconds s1(10);
  std::chrono::seconds s2 -s1;


  std::cout << "negated 10 seconds are << s2.count() << seconds\n";
 }

Output:


 negated 10 seconds are -10 seconds

See also


operator++
operator++(int) increments or decrements the tick count
operator--      (public member function)
operator--(int)
operator+
operator-       implements arithmetic operations with durations as arguments
operator*       (function template)
operator/
operator%