CLOCK

Section: Linux Programmer's Manual (3)
Updated: April 21, 1993
Index Return to Main Contents
 

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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMS TO
BUGS
SEE ALSO

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