Is there a way to know if std::chrono::monotonic_clock is defined?

Posted by Vicente Botet Escriba on Stack Overflow See other posts from Stack Overflow or by Vicente Botet Escriba
Published on 2010-05-30T23:44:33Z Indexed on 2010/05/30 23:52 UTC
Read the original article Hit count: 208

Filed under:
|
|
|

C++0X N3092 states that monotonic_clock is optional.

20.10.5.2 Class monotonic_clock [time.clock.monotonic]

1 Objects of class monotonic_clock represent clocks for which values of time_point never decrease as physical time advances. monotonic_clock may be a synonym for system_clock if system_clock::is_monotonic is true.

** 2 The class monotonic_clock is conditionally supported.**

Is there a way using SFINAE or another technique to define a traits class that states if monotonic_clock is defined?

struct is_monotonic_clock_defined;

If yes, how? If not, shouldn't the standard define macro that gives this information at preprocessing time?

© Stack Overflow or respective owner

Related posts about preprocessor

Related posts about c++0x