On Mon, 2016-06-06 at 13:10 +0000, jmh530 via Digitalmars-d wrote: > On Monday, 6 June 2016 at 05:49:53 UTC, Ethan Watson wrote: > > > > Echoing the need for decimal support. I won't use it myself, > > but I know it's critical for finance. > > You can always round something to two digits if you need to.
For graphics cards this approach to floating point may work: in fact we know it does, graphics card floating point is fast but really quite inaccurate, but it is accurate enough that the final rounding leads to the right result (usually). For finance, you have to have very high accuracy all the way through calculations: floating point rounding errors are a serious problem solvable only with arbitrary size/precision numbers. Hence Java's BigDecimal, GNU's gmp and all the other realizations. This is not just an abstract technical debate, it is a matter of compliance with legal and regulatory requirements. And no you can't do it with integers, at least not hardware ones. -- Russel. ============================================================================= Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.win...@ekiga.net 41 Buckmaster Road m: +44 7770 465 077 xmpp: rus...@winder.org.uk London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
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