1*48352Scael.\" Copyright (c) 1990, 1991 The Regents of the University of California. 237123Sbostic.\" All rights reserved. 337123Sbostic.\" 443571Strent.\" %sccs.include.redist.man% 537123Sbostic.\" 6*48352Scael.\" @(#)clock.3 5.3 (Berkeley) 04/19/91 737123Sbostic.\" 8*48352Scael.Dd 9*48352Scael.Dt CLOCK 3 10*48352Scael.Os 11*48352Scael.Sh NAME 12*48352Scael.Nm clock 13*48352Scael.Nd determine processor time used 14*48352Scael.Sh SYNOPSIS 15*48352Scael.Fd #include <sys/types.h> 16*48352Scael.Ft clock_t 17*48352Scael.Fn clock void 18*48352Scael.Sh DESCRIPTION 19*48352ScaelThe 20*48352Scael.Fn clock 21*48352Scaelfunction 22*48352Scaeldetermines the amount of processor time used since the invocation of the 23*48352Scaelcalling process, measured in 24*48352Scael.Dv CLK_TCK Ns s. 25*48352Scael.Sh RETURN VALUES 26*48352ScaelThe 27*48352Scael.Fn clock 28*48352Scaelfunction returns the amount of time used unless an error occurs, in which 29*48352Scaelcase the return value is \-1. 30*48352Scael.Sh SEE ALSO 31*48352Scael.Xr getrusage 2 32*48352Scael.Sh STANDARDS 33*48352ScaelThe 34*48352Scael.Fn clock 35*48352Scaelfunction conforms to 36*48352Scael.St -ansiC . 37