"usleep" routine in HP's

[rosa at maui.cs.ucla.edu]

I have a C program with real time restrictions that uses the "usleep"
routine provided in the SUN's C library ("usleep" gives precision of
micro-seconds). In the HP's, there is not this routine. I was told
a "nap" routine for HP machines was posted in the "comp.unix.sources"
some time ago. Where can I find a copy of this routine? 

Thanks in advance,

	--Berthier