On 5 December 2014 at 23:54, Gene Heskett <[email protected]> wrote:
> In building a while loop that dealt with values the that start as plus and
> went negative as the loop execs, I found I had to subtract 0.01000 from
> the var I as testing against to stop a last, unwanted loop from being
> executed. All my vars are stated to about 8 digits.
That seems strange, as that seems like a large delta if you use that
many digits.
Floating point does have a tendency to hold numbers almost, but not quite, zero.
My loops tend to look like
O100 WHILE (#1 GT #2 + #<cut>)
#1 = [#1 - #<cut>]
G1 Z#1
{Cuts}
WEND
G1 Z#2
{Repeat of cuts at exact depth}
For a complex cut a better way is this, though with a risk of a really
small last cut (the above way may give a slightly deep last cut, but
both explicitly finish at exact depth)
O100 WHILE (#1 GT #2)
#1 = [#1 = #<cut>]
O101 IF [#1 LT #2]
#1 = #2
O101 ENDIF
{Cuts}
WEND
--
atp
If you can't fix it, you don't own it.
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