[unix-history] / usr / src / lib / libc / gen / clock.3

.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the American National Standards Committee X3, on Information
.\" Processing Systems.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)clock.3	5.4 (Berkeley) %G%
.\"
.Dd 
.Dt CLOCK 3
.Os
.Sh NAME
.Nm clock
.Nd determine processor time used
.Sh SYNOPSIS
.Fd #include <sys/types.h>
.Ft clock_t
.Fn clock void
.Sh DESCRIPTION
The
.Fn clock
function
determines the amount of processor time used since the invocation of the
calling process, measured in
.Dv CLK_TCK Ns s.
.Sh RETURN VALUES
The
.Fn clock
function returns the amount of time used unless an error occurs, in which
case the return value is \-1.
.Sh SEE ALSO
.Xr getrusage 2
.Sh STANDARDS
The
.Fn clock
function conforms to
.St -ansiC .
Commit	Line	Data
ae59e04c	1	.\" Copyright (c) 1990, 1991 The Regents of the University of California.
936cff82 KB	2	.\" All rights reserved.
936cff82 KB	3	.\"
043368e6 KB	4	.\" This code is derived from software contributed to Berkeley by
	5	.\" the American National Standards Committee X3, on Information
	6	.\" Processing Systems.
	7	.\"
91cff1e1	8	.\" %sccs.include.redist.man%
936cff82	9	.\"
043368e6	10	.\" @(#)clock.3 5.4 (Berkeley) %G%
936cff82	11	.\"
ae59e04c CL	12	.Dd
	13	.Dt CLOCK 3
	14	.Os
	15	.Sh NAME
	16	.Nm clock
	17	.Nd determine processor time used
	18	.Sh SYNOPSIS
	19	.Fd #include <sys/types.h>
	20	.Ft clock_t
	21	.Fn clock void
	22	.Sh DESCRIPTION
	23	The
	24	.Fn clock
	25	function
	26	determines the amount of processor time used since the invocation of the
	27	calling process, measured in
	28	.Dv CLK_TCK Ns s.
	29	.Sh RETURN VALUES
	30	The
	31	.Fn clock
	32	function returns the amount of time used unless an error occurs, in which
	33	case the return value is \-1.
	34	.Sh SEE ALSO
	35	.Xr getrusage 2
	36	.Sh STANDARDS
	37	The
	38	.Fn clock
	39	function conforms to
	40	.St -ansiC .