libstdc++
std::literals::chrono_literals Namespace Reference

Functions

constexpr chrono::day operator""d (unsigned long long __d) noexcept
 
template<char... _Digits>
constexpr chrono::hours operator""h ()
 
constexpr chrono::duration< long double, ratio< 3600, 1 > > operator""h (long double __hours)
 
template<char... _Digits>
constexpr chrono::minutes operator""min ()
 
constexpr chrono::duration< long double, ratio< 60, 1 > > operator""min (long double __mins)
 
template<char... _Digits>
constexpr chrono::milliseconds operator""ms ()
 
constexpr chrono::duration< long double, millioperator""ms (long double __msecs)
 
template<char... _Digits>
constexpr chrono::nanoseconds operator""ns ()
 
constexpr chrono::duration< long double, nanooperator""ns (long double __nsecs)
 
template<char... _Digits>
constexpr chrono::seconds operator""s ()
 
constexpr chrono::duration< long double > operator""s (long double __secs)
 
template<char... _Digits>
constexpr chrono::microseconds operator""us ()
 
constexpr chrono::duration< long double, microoperator""us (long double __usecs)
 
constexpr chrono::year operator""y (unsigned long long __y) noexcept
 

Detailed Description

ISO C++ 2014 namespace for suffixes for duration literals.

These suffixes can be used to create chrono::duration values with tick periods of hours, minutes, seconds, milliseconds, microseconds or nanoseconds. For example, std::chrono::seconds(5) can be written as 5s after making the suffix visible in the current scope. The suffixes can be made visible by a using-directive or using-declaration such as:

  • using namespace std::chrono_literals;
  • using namespace std::literals;
  • using namespace std::chrono;
  • using namespace std;
  • using std::chrono_literals::operator""s;

The result of these suffixes on an integer literal is one of the standard typedefs such as std::chrono::hours. The result on a floating-point literal is a duration type with the specified tick period and an unspecified floating-point representation, for example 1.5e2ms might be equivalent to chrono::duration<long double, chrono::milli>(1.5e2).

Since
C+14