OSF

NAME

clock − Reports CPU time used

LIBRARY

Standard C Library (libc.a)

SYNOPSIS

#include <time.h>

clock_t clock (void);

DESCRIPTION

The clock() function reports the amount of processor time used by the calling process. 

NOTES

The clock() function is made obsolete by the getrusage() function; however, it is included for compatibility with older BSD programs. 

AES Support Level:
Full use

RETURN VALUES

The clock() function returns the amount of processor time (in microseconds) used since the first call to clock().  To determine the time in seconds, divide the value returned by clock() by the value CLOCKS_PER_SEC.  If the processor time used is not available or its value cannot be represented, the clock() function returns (clock_t)-1. 

RELATED INFORMATION

Functions: getrusage(2), times(3), wait(2)