Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.java.programmer > #14270
| From | Gene Wirchenko <genew@ocis.net> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Sorting numeric strings |
| Date | 2012-05-04 14:19 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <gkh8q712jvs0scpgtil3ull4cssmis5v1k@4ax.com> (permalink) |
| References | (4 earlier) <3s93q719q1787gb4ihi4fugvn8cvgc8nu2@4ax.com> <iuUHyzEIFtoPFwwg@invalid.uk.co.demon.merlyn.invalid> <n296q79vcj1hoi8vunmqem2nbe1litv4av@4ax.com> <29053378.63.1336093904131.JavaMail.geo-discussion-forums@pbctc10> <jo1cje$o4a$1@localhost.localdomain> |
On Fri, 4 May 2012 20:01:50 +0000 (UTC), Martin Gregorie
<martin@address-in-sig.invalid> wrote:
[snip]
>I think you'll find that using floating point for financial amounts was
>an abberation introduced by programmers on early 8 and 16 bit micros who
>wrote financial packages in BASIC.
I suspect that it raised its head on earlier systems that did not
have COBOL or another language with decimal arithmetic.
With JavaScript, short of writing a fixed-point library, you have
to use floating point since JavaScript has only one numeric type,
namely IEEE 754 64-bit floating point. If you restrict your
arithmetic such that calculations result only in integer values in
range, you are safe. I have done proof-of-concept on this, and it
does work.
>Early mainframes stored currency values as binary or BCD integers and all
>modern systems should do the same
The details are the killer.
Sincerely,
Gene Wirchenko
Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Sorting numeric strings Ben <no@way.com> - 2012-04-30 21:27 -0400
Re: Sorting numeric strings Arne Vajhøj <arne@vajhoej.dk> - 2012-04-30 21:39 -0400
Re: Sorting numeric strings Gene Wirchenko <genew@ocis.net> - 2012-05-01 10:30 -0700
Re: Sorting numeric strings Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-05-01 10:53 -0700
Re: Sorting numeric strings Roedy Green <see_website@mindprod.com.invalid> - 2012-05-01 14:50 -0700
Re: Sorting numeric strings Patricia Shanahan <pats@acm.org> - 2012-05-01 15:02 -0700
Re: Sorting numeric strings Roedy Green <see_website@mindprod.com.invalid> - 2012-05-02 14:36 -0700
Re: Sorting numeric strings Gene Wirchenko <genew@ocis.net> - 2012-05-02 19:57 -0700
Re: Sorting numeric strings Dr J R Stockton <reply1218@merlyn.demon.co.uk.not.invalid> - 2012-05-03 19:41 +0100
Re: Sorting numeric strings Roedy Green <see_website@mindprod.com.invalid> - 2012-05-03 17:40 -0700
Re: Sorting numeric strings Lew <lewbloch@gmail.com> - 2012-05-03 18:11 -0700
Re: Sorting numeric strings Martin Gregorie <martin@address-in-sig.invalid> - 2012-05-04 20:01 +0000
Re: Sorting numeric strings Gene Wirchenko <genew@ocis.net> - 2012-05-04 14:19 -0700
Re: Sorting numeric strings Martin Gregorie <martin@address-in-sig.invalid> - 2012-05-04 23:36 +0000
Re: Sorting numeric strings Dr J R Stockton <reply1218@merlyn.demon.co.uk.not.invalid> - 2012-05-06 17:50 +0100
Re: Sorting numeric strings Gene Wirchenko <genew@ocis.net> - 2012-05-07 10:34 -0700
Re: Sorting numeric strings Joshua Cranmer <Pidgeot18@verizon.invalid> - 2012-05-07 12:38 -0500
Re: Sorting numeric strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-05-07 17:48 +0000
Re: Sorting numeric strings Gene Wirchenko <genew@ocis.net> - 2012-05-07 11:42 -0700
Re: Sorting numeric strings Roedy Green <see_website@mindprod.com.invalid> - 2012-05-01 13:38 -0700
csiph-web