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1.1 ! root 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 provided ! 5: .\" that: (1) source distributions retain this entire copyright notice and ! 6: .\" comment, and (2) distributions including binaries display the following ! 7: .\" acknowledgement: ``This product includes software developed by the ! 8: .\" University of California, Berkeley and its contributors'' in the ! 9: .\" documentation or other materials provided with the distribution and in ! 10: .\" all advertising materials mentioning features or use of this software. ! 11: .\" Neither the name of the University nor the names of its contributors may ! 12: .\" be used to endorse or promote products derived from this software without ! 13: .\" specific prior written permission. ! 14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED ! 15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF ! 16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 17: .\" ! 18: .\" @(#)clock.3 5.2 (Berkeley) 6/23/90 ! 19: .\" ! 20: .TH CLOCK 3 "June 23, 1990" ! 21: .AT 3 ! 22: .SH NAME ! 23: clock - determine processor time used ! 24: .SH SYNOPSIS ! 25: .nf ! 26: #include <sys/types.h> ! 27: ! 28: clock_t ! 29: clock() ! 30: .fi ! 31: .SH DESCRIPTION ! 32: .I Clock ! 33: returns the amount of processor time used since the process ! 34: invocation, measured in ! 35: .IR CLK_TCK 's. ! 36: .PP ! 37: On error, ! 38: .I clock ! 39: returns -1. ! 40: .SH "SEE ALSO" ! 41: getrusage(2)
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