Chrono literals

Back to chrono

 

The ETL Chrono literals are define slightly differently from the STL in that they are user defined, as opposed to language defined.

 

Example:-

For STL, the literal to define year 2025 would be 2025y.
For ETL, the literal is 2025_y.

By default, the ETL uses the designations of the STL.
As this may clash with other user defined literals, the ETL allows more verbose forms to be used, by defining the macro ETL_USE_VERBOSE_CHRONO_LITERALS.
If enabled, the example of 2025_y would be written as 2025_year.

 

Duration type                STL like   Verbose

etl::chrono::year            2025_y     2025_year

etl::chrono::day             10_d       10_day
etl::chrono::hours           14_h       14_hours
etl::chrono::minutes         30_min     30_minutes
etl::chrono::seconds         45_s       45_seconds
etl::chrono::milliseconds    500_ms     500_milliseconds
etl::chrono::microseconds    500_us     500_microseconds
etl::chrono::nanoseconds     500_ns     500_nanoseconds

Chrono literals may by accessed by using one of the following:-

using namespace etl::chrono;

using namespace etl::literals;

using namespace etl::chrono_literals;