OpenEuphoria

Re: abs function

• Posted by "Lucius L. Hilley III" <lhilley at CDC.NET> Jul 10, 1999
• 415 views

Only one problem?  There is yet another problem.
Say that an atoms range is from 0 to 255.
I know this isn't true but just keep the fact that
there IS a limit much higher involved.

If 255 is your limit and you want the abs() of 16
then you will have already went beyond your limit.

16*16 = 256 and is > 255 which is the stated hypothetical
range limit.

In short. this abs() will only work for numbers equal to
or less than sqrt(atom_max_value).

        Lucius L. Hilley III
          lhilley at cdc.net
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----- Original Message -----
From: Derek Brown <Cyrusbrown at AOL.COM>
To: <EUPHORIA at LISTSERV.MUOHIO.EDU>
Sent: Saturday, July 10, 1999 9:19 AM
Subject: Re: abs function


> ---------------------- Information from the mail
header -----------------------
> Sender:       Euphoria Programming for MS-DOS
<EUPHORIA at LISTSERV.MUOHIO.EDU>
> Poster:       Derek Brown <Cyrusbrown at AOL.COM>
> Subject:      Re: abs function
> --------------------------------------------------------------------------
-----
>
>   That's a pretty short way of doing it, but there is only one problem.
When
> using atoms, finding the square and the square root of a number with lots
of
> decimal places will cause it to lose accuracy.  But, for integers, that
way
> is good.
>   This will keep the accuracy by only changing the sign if necessary:
>
> global function abs(atom x)
>   if x < 0 then return  0 - x else return x end if
> end function
>
> Derek Brown
>