Re: [9front] Re: seq: fix infinite loop

[hiro <23hiro@gmail.com>]

sounds like a good addition to the BUGS section of the man page

On 8/17/21, ori@eigenstate.org <ori@eigenstate.org> wrote:
> Quoth Anthony Martin <ality@pbrane.org>:
>> But really, if you're playing games at the boundaries
>> of floating point precision, you're bound to lose. I
>> suggest we either a) do nothing and leave the loop
>> exactly as it is described in the manual but add a note
>> in the BUGS section, or b) go back to the v8 method
>> that calculates the number of steps in the loop before
>> executing it. Even with the latter method you can see
>> odd results due to precision limitations but at least
>> there will be no infinite loops.
>>
>> I vote for "a".
>>
>
> I agree -- *BUT* I like the consolidation of the
> two loops. I'd take that.
>
> I also wonder if:
>
> 	for(val = min; val <= max; val += incr){
> 		if(val == prev)
> 			sysfatal("insufficient precision")
> 		...
> 		prev = val
> 	}
>
> covers the infinite loop case sufficiently.
>
>