1. Re: ABS
Hello,
David Cuny wrote:
>Lewis posted his offering for the ABS function:
>
>> function abs(object x)
>> return sqrt(x*x)
>> end function
>
>I've avoided this discussion up to this point, but I couldn't resist
the
>bait. Getting a function as fast as possible is fine, but you probably
want
>to avoid this approach:
>
> - It can overflow for large numbers
I agree here, infact sqrt buttons on calculators can accually give you
significantly incorrect answers on large numbers so it wouldn't be good
for this.
> - It's non-intuitive
This, however, I believe is a matter of oppinion. I find sqrt"(x*x)"
very intuitive for me while lots of recursion runs me in circles.
Sincerely,
Lewis Townsend
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