< c‎ | chrono
Defined in header <time.h>
#define CLOCKS_PER_SEC /*implementation defined*/

Expands to an expression (not necessarily a compile-time constant) of type clock_t equal to the number of clock ticks per second, as returned by clock().

[edit] Notes

POSIX defines CLOCKS_PER_SEC as one million, regardless of the actual precision of clock.

[edit] See also

returns raw processor clock time since the program is started
process running time
C++ documentation for CLOCKS_PER_SEC