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1 | .\" Copyright (c) 1989 The Regents of the University of California. |
2 | .\" All rights reserved. | |
3 | .\" | |
4 | .\" Redistribution and use in source and binary forms are permitted | |
5 | .\" provided that the above copyright notice and this paragraph are | |
6 | .\" duplicated in all such forms and that any documentation, | |
7 | .\" advertising materials, and other materials related to such | |
8 | .\" distribution and use acknowledge that the software was developed | |
9 | .\" by the University of California, Berkeley. The name of the | |
10 | .\" University may not be used to endorse or promote products derived | |
11 | .\" from this software without specific prior written permission. | |
12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
14 | .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
15 | .\" | |
16 | .\" @(#)clock.3 5.1 (Berkeley) %G% | |
17 | .\" | |
18 | .TH CLOCK 3 "" | |
19 | .AT 3 | |
20 | .SH NAME | |
21 | clock - determine processor time used | |
22 | .SH SYNOPSIS | |
23 | .nf | |
24 | #include <sys/types.h> | |
25 | ||
26 | clock_t | |
27 | clock() | |
28 | .fi | |
29 | .SH DESCRIPTION | |
30 | .I Clock | |
31 | returns the amount of processor time used since the process | |
32 | invocation, measured in | |
33 | .IR CLK_TCK 's. | |
34 | .PP | |
35 | On error, | |
36 | .I clock | |
37 | returns -1. | |
38 | .SH "SEE ALSO" | |
39 | getrusage(2) |