[TUHS] Word erase?

Mary Ann Horton mah at mhorton.net
Sat Apr 13 01:58:05 AEST 2024


On 4/8/24 18:51, Chris Torek wrote:
>> Chris Torek of UofMaryland.
> I got it into 4.3-Reno.  I did not come up with the whole thing but
> Rehmi Post and I worked out how to compute %cpu without using floating
> point (the original VAX-only version used FP but we had to stop doing
> that when we were worried about porting to systems that lacked kernel
> access to FP).
>
> The version in current FreeBSD is fancier now though.
>
> Chris

Around 1981 I put a similar calculation into 2BSD for the PDP-11 with no 
floating point, but this was for the system load average, not the %cpu. 
It just imputes a decimal point in the middle of what the processor 
considers an integer.

Thanks,

/Mary Ann Horton/ (she/her/ma'am)
       Award Winning Author
maryannhorton.com <https://maryannhorton.com>



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.tuhs.org/pipermail/tuhs/attachments/20240412/fea62010/attachment.htm>


More information about the TUHS mailing list