.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
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.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Sat Jul 24 17:43:05 1993 by Rik Faith (faith@cs.unc.edu)
.TH USLEEP 3  "July 4, 1993" "" "Linux Programmer's Manual"
.SH NAME
usleep \- suspend execution for interval of microseconds
.SH SYNOPSIS
.nf
.B #include <unistd.h>
.sp
.BI "void usleep(unsigned long " usec );
.fi
.SH DESCRIPTION
The \fBusleep()\fP function suspends execution of the calling process for
\fIusec\fP microseconds.  The sleep may be lengthened slightly by any 
system activity or by the time spent processing the call.
.SH "CONFORMING TO"
BSD 4.3
.SH "SEE ALSO"
.BR setitimer (2),
.BR getitimer "(2),
.BR sleep (3),
.BR alarm (2),
.BR select (2)