对码当歌,猿生几何?

CLOCKS_PER_SEC

From cppreference.com
< cpp‎ | chrono‎ | c
 
 
 
 
C-style date and time utilities
Functions
Time manipulation
Format conversions
Constants
CLOCKS_PER_SEC
Types
(C++17)
 
Defined in header <ctime>
#define CLOCKS_PER_SEC /*implementation defined*/

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

Notes

POSIX defines CLOCKS_PER_SEC as one million, regardless of the actual precision of std::clock().

See also

returns raw processor clock time since the program is started
(function)
process running time
(typedef)
C documentation for CLOCKS_PER_SEC