On Thu, 20 Nov 2003, Bryan Mumford wrote:

> Is anyone using the 24 bit or 32 bit square root functions in the
> archives? After struggling with the syntax, I have it working with my
> assembler, but I don't get the right answers. Perhaps I've bungled
> the conversion.....

Hi Bryan,

I got your messages earlier... As you know, Andy David wrote those
routines and not me. However, his 32-bit routine is based upon my 16-bit
routine. Also, he targeted the 17C43. A few months someone asked about a
32-bit square root routine, so like Andy I ported my 16-bit routine. I'm
not sure if Andy's routine is correct or not, but I have tested mine and
it certainly works for several test cases (i.e. I haven't performed a
brute-forced check of all 2^32 inputs). I'm also hesitant to release the
code because it has no comments at all. If you're willing to live with
that then here it is:

http://www.dattalo.com/technical/software/pic/sqrt_32bit.asm

Scott

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