macro
<ctime>

CLOCKS_PER_SEC

Clock ticks per second
This macro expands to an expression representing the number of clock ticks per second.

Clock ticks are units of time of a constant but system-specific length, as those returned by function clock.

Dividing a count of clock ticks by this expression yields the number of seconds.

The type of this macro is unspecified.
This macro evaluates to an expression of type clock_t.

CLK_TCK is an obsolete alias of this macro.

See also

clock
Clock program (function )
clock_t
Clock type (type )