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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.

CONFORMS 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)


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