Floating point argument for sleep command in Unix

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usleep

usleep(3C)						   Standard C Library Functions 						usleep(3C)

NAME

       usleep - suspend execution for interval in microseconds

SYNOPSIS

       #include <unistd.h>

       int usleep(useconds_t useconds);

DESCRIPTION

       The usleep() function suspends the caller from execution for the number of microseconds specified by the useconds argument. The actual sus-
       pension time might be less than requested because any caught signal will terminate usleep() following execution of that	signal's  catching
       routine.  The suspension time might be longer than requested by an arbitrary amount because of the scheduling of other activity in the sys-
       tem.

       If the value of useconds is 0, then the call has no effect.

       The use of the usleep() function has no effect on the action or blockage of any signal. In  a  multithreaded  process,  only  the  invoking
       thread is suspended from execution.

RETURN VALUES

       On completion, usleep() returns 0. There are no error retruns.

ERRORS

       No errors are returned.

USAGE

       The usleep() function is included for its historical usage.  The nanosleep(3C) function is preferred over this function.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+
       |Standard		     |See standards(5). 	   |
       +-----------------------------+-----------------------------+

SEE ALSO

       nanosleep(3C), sleep(3C), attributes(5), standards(5)

SunOS 5.11							    5 Feb 2008								usleep(3C)

UNIX for Advanced & Expert Users