OpenEuphoria

Re: ESL - math.e - rounding

• Posted by Pete Lomax <petelomax at blueyonder.co.uk> Aug 03, 2005
• 766 views

On Wed, 03 Aug 2005 14:53:22 +0200, Juergen Luethje <j.lue at gmx.de>
wrote:

>Both functions sometimes return different results, when the (n+1)th
>decimal place of x equals 5:
>     round_half_even()        -- rounds to nearest even value
>     round_half_up()          -- always rounds up  ( surprise!  )
>
>What do you all think?

UK VAT law would allow either, or round_half_down.

Another function to consider is knock_on_round(), for example if you
have a column of 100 7.125's, then they should be 7.12, 7.13, 7.12...
so that the sum of the rounded amounts is 712.50, not 712.00.

A clear_knock_on_round function would be an absolute necessity, or a
get/set pair for maximum flexibility.

Pete