Re: Rounding numbers

*To*: mathgroup at smc.vnet.net*Subject*: [mg37375] Re: Rounding numbers*From*: "Dana DeLouis" <delouis at bellsouth.net>*Date*: Fri, 25 Oct 2002 02:48:31 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Thank you everyone. Looks like there is no built-in way to Round to a certain level. I hate the thought of Multiplying and Dividing, but it looks like the only workaround. A search of the archives shows that this is a real problem. I also found many complaints on not being able to Round Pi or E to something less than 16 digits. (Every solution affected the display, not the number) Thanks Bob for your Help. Thanks Matthias for the following idea also. (Round[N[Pi*1000, 10]])/1000 // N Sorry for the late Thank you. I am not use to being in a moderated newsgroup where you have to send an email instead of hitting the normal Reply Group button. -- Dana DeLouis Windows XP $VersionNumber -> 4.2 = = = = = = = = = = = = = = = = = <BobHanlon at aol.com> wrote in message news:anrkae$3ui$1 at smc.vnet.net... > > In a message dated 10/6/2002 7:39:38 AM, delouis at bellsouth.net writes: > > >Could somebody please inform me how to Round numbers to a > >certain Accuracy using Mathematica 4.2. This is not as easy as it > >sounds. > >Every function that I have read Rounds the Display, and not the actual > >number. > > myRound[x_, n_] := Round[10^n*x]/10.^n; > > Table[myRound[Random[], 3], {10}] > > {0.044, 0.019, 0.738, 0.298, 0.917, 0.171, 0.021, 0.314, > 0.658, 0.153} > > Bob Hanlon