CLOCK

Section: Linux Programmer's Manual (3)
Updated: April 21, 1993
 

NAME

clock - Determine processor time  

SYNOPSIS

#include <time.h>

clock_t clock(void);
 

DESCRIPTION

The clock() function returns an approximation of processor time used by the program.  

RETURN VALUE

The value returned is the CPU time used so far as a clock_t; to get the number of seconds used, divide by CLOCKS_PER_SEC.  

CONFORMING TO

ANSI C  

BUGS

The C standard allows for arbitrary values at the start of the program; take the difference between the value returned from a call to clock() at the start of the program and the end to get maximum portability.

The times() function call returns more information.  

SEE ALSO

times(2)