1*2fe8fb19SBen Gras.\" $NetBSD: clock.3,v 1.10 2003/08/07 16:42:46 agc Exp $ 2*2fe8fb19SBen Gras.\" 3*2fe8fb19SBen Gras.\" Copyright (c) 1990, 1991, 1993 4*2fe8fb19SBen Gras.\" The Regents of the University of California. All rights reserved. 5*2fe8fb19SBen Gras.\" 6*2fe8fb19SBen Gras.\" This code is derived from software contributed to Berkeley by 7*2fe8fb19SBen Gras.\" the American National Standards Committee X3, on Information 8*2fe8fb19SBen Gras.\" Processing Systems. 9*2fe8fb19SBen Gras.\" 10*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 11*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 12*2fe8fb19SBen Gras.\" are met: 13*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 14*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 15*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 16*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 17*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 18*2fe8fb19SBen Gras.\" 3. Neither the name of the University nor the names of its contributors 19*2fe8fb19SBen Gras.\" may be used to endorse or promote products derived from this software 20*2fe8fb19SBen Gras.\" without specific prior written permission. 21*2fe8fb19SBen Gras.\" 22*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23*2fe8fb19SBen Gras.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24*2fe8fb19SBen Gras.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25*2fe8fb19SBen Gras.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26*2fe8fb19SBen Gras.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27*2fe8fb19SBen Gras.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28*2fe8fb19SBen Gras.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29*2fe8fb19SBen Gras.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30*2fe8fb19SBen Gras.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31*2fe8fb19SBen Gras.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32*2fe8fb19SBen Gras.\" SUCH DAMAGE. 33*2fe8fb19SBen Gras.\" 34*2fe8fb19SBen Gras.\" @(#)clock.3 8.1 (Berkeley) 6/4/93 35*2fe8fb19SBen Gras.\" 36*2fe8fb19SBen Gras.Dd June 4, 1993 37*2fe8fb19SBen Gras.Dt CLOCK 3 38*2fe8fb19SBen Gras.Os 39*2fe8fb19SBen Gras.Sh NAME 40*2fe8fb19SBen Gras.Nm clock 41*2fe8fb19SBen Gras.Nd determine processor time used 42*2fe8fb19SBen Gras.Sh LIBRARY 43*2fe8fb19SBen Gras.Lb libc 44*2fe8fb19SBen Gras.Sh SYNOPSIS 45*2fe8fb19SBen Gras.In time.h 46*2fe8fb19SBen Gras.Ft clock_t 47*2fe8fb19SBen Gras.Fn clock void 48*2fe8fb19SBen Gras.Sh DESCRIPTION 49*2fe8fb19SBen GrasThe 50*2fe8fb19SBen Gras.Fn clock 51*2fe8fb19SBen Grasfunction 52*2fe8fb19SBen Grasdetermines the amount of processor time used since the invocation of the 53*2fe8fb19SBen Grascalling process, measured in 54*2fe8fb19SBen Gras.Dv CLOCKS_PER_SEC Ns s . 55*2fe8fb19SBen Gras.Sh RETURN VALUES 56*2fe8fb19SBen GrasThe 57*2fe8fb19SBen Gras.Fn clock 58*2fe8fb19SBen Grasfunction returns the amount of time used unless an error occurs, in which 59*2fe8fb19SBen Grascase the return value is \-1. 60*2fe8fb19SBen Gras.Sh SEE ALSO 61*2fe8fb19SBen Gras.Xr getrusage 2 62*2fe8fb19SBen Gras.Sh STANDARDS 63*2fe8fb19SBen GrasThe 64*2fe8fb19SBen Gras.Fn clock 65*2fe8fb19SBen Grasfunction conforms to 66*2fe8fb19SBen Gras.St -ansiC . 67