.\" Copyright (c) 1989 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.man%
.\"
.\"	@(#)clock.3	5.2 (Berkeley) %G%
.\"
.TH CLOCK 3 ""
.AT 3
.SH NAME
clock - determine processor time used
.SH SYNOPSIS
.nf
#include <sys/types.h>

clock_t
clock()
.fi
.SH DESCRIPTION
.I Clock
returns the amount of processor time used since the process
invocation, measured in
.IR CLK_TCK 's.
.PP
On error,
.I clock
returns -1.
.SH "SEE ALSO"
getrusage(2)