Groups > comp.lang.java.programmer > #6539

Re: Arithmetic overflow checking

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From	Joshua Cranmer <Pidgeot18@verizon.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: Arithmetic overflow checking
Date	Mon, 25 Jul 2011 10:20:48 -0700
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On 7/23/2011 7:39 PM, 
supercalifragilisticexpialadiamaticonormalizeringelimatisticantations wrote:
> On 23/07/2011 2:51 PM, lewbloch wrote:
>> David Lamb wrote:
>>> supercalifragilisticexpialadiamaticonormalizeringelimatisticantations
>>> wrote:
>>>> Eww. Mutable number classes.
>>>
>>> It's what happens to ordinary ints in most machine languages. Feel free
>>> to define the less-efficient functional versions that always generate
>>> new objects. The main point was that the method calls aren't necessarily
>>> all that hard to read.
>>
>> The "Eww" poster seems fond of making tabloid statements devoid of
>> engineering reasoning.
>
> Wrong.
>
> Ordinary ints aren't (in Java, at least, with no "int *" type) subject
> to aliasing and other problems that a mutable Integer-analogue would be.

Then I suppose you'd have no objection to making the Matrix class 
immutable and implicitly copying itself every time you do an operation. 
I really appreciate that when using Householders to find eigenvalues in 
my small 10Kx10K matrix.

-- 
Beware of bugs in the above code; I have only proved it correct, not 
tried it. -- Donald E. Knuth

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Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-15 00:14 -0500
  Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-15 07:00 -0700
    Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-15 08:09 -0700
      Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-20 22:07 -0400
    Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-15 23:29 -0500
      Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-15 22:26 -0700
        Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-16 00:32 -0500
          Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-16 11:00 -0700
            Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-16 11:15 -0700
              Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-16 15:41 -0500
                Re: Arithmetic overflow checking Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-07-16 23:18 +0000
                Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-17 00:30 -0500
      Re: Arithmetic overflow checking "John B. Matthews" <nospam@nospam.invalid> - 2011-07-16 08:39 -0400
        Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-16 10:33 -0700
          Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-16 15:51 -0500
            Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-17 08:46 -0700
              Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-18 07:03 -0500
                Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-18 06:21 -0700
        Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-16 15:43 -0500
          Re: Arithmetic overflow checking "John B. Matthews" <nospam@nospam.invalid> - 2011-07-17 09:50 -0400
            Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-17 08:15 -0700
              Re: Arithmetic overflow checking "John B. Matthews" <nospam@nospam.invalid> - 2011-07-18 01:12 -0400
              Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 16:50 -0400
            Re: Arithmetic overflow checking "MikeP" <mp011011@some.org> - 2011-07-18 06:56 -0500
              Re: Arithmetic overflow checking David Lamb <dalamb@cs.queensu.ca> - 2011-07-18 19:26 -0400
          Re: Arithmetic overflow checking Gene Wirchenko <genew@ocis.net> - 2011-07-18 15:03 -0700
        Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-20 22:16 -0400
          Re: Arithmetic overflow checking Henderson <h1@g1.f1> - 2011-07-20 22:25 -0400
            Re: Arithmetic overflow checking David Lamb <dalamb@cs.queensu.ca> - 2011-07-21 08:50 -0400
              Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-21 07:37 -0700
              Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 16:52 -0400
          Re: Arithmetic overflow checking Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-21 12:19 +0000
            Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 16:54 -0400
              Re: Arithmetic overflow checking Gene Wirchenko <genew@ocis.net> - 2011-07-21 14:46 -0700
                Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 18:10 -0400
                Re: Arithmetic overflow checking Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-21 23:22 +0000
                Re: Arithmetic overflow checking "John B. Matthews" <nospam@nospam.invalid> - 2011-07-21 21:47 -0400
                Re: Arithmetic overflow checking David Lamb <dalamb@cs.queensu.ca> - 2011-07-23 10:15 -0400
      Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-16 10:46 -0700
        Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-16 11:13 -0700
      Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-20 22:09 -0400
        Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-20 21:01 -0700
        Re: Arithmetic overflow checking Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-07-21 07:05 -0300
          Re: Arithmetic overflow checking supercalifragilisticexpialadiamaticonormalizeringelimatisticantations <supercalifragilisticexpialadiamaticonormalizeringelimatisticantations@averylongandannoyingdomainname.com> - 2011-07-21 06:28 -0400
            Re: Arithmetic overflow checking Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-07-21 12:32 +0000
              Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 16:58 -0400
                Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-21 15:58 -0700
                Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 19:14 -0400
                Re: Arithmetic overflow checking Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-22 13:07 +0000
                Re: Arithmetic overflow checking Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-07-22 17:33 +0000
                Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-22 13:36 -0700
                Re: Arithmetic overflow checking Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-07-22 23:16 +0000
                Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-22 16:50 -0700
                Re: Arithmetic overflow checking Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-07-23 20:09 +0000
                Re: Arithmetic overflow checking Patricia Shanahan <pats@acm.org> - 2011-07-24 08:56 -0700
                Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-23 09:37 -0700
              Re: Arithmetic overflow checking David Lamb <dalamb@cs.queensu.ca> - 2011-07-23 11:23 -0400
                Re: Arithmetic overflow checking supercalifragilisticexpialadiamaticonormalizeringelimatisticantations <supercalifragilisticexpialadiamaticonormalizeringelimatisticantations@averylongandannoyingdomainname.com> - 2011-07-23 12:04 -0400
                Re: Arithmetic overflow checking David Lamb <dalamb@cs.queensu.ca> - 2011-07-23 14:45 -0400
                Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-23 11:51 -0700
                Re: Arithmetic overflow checking supercalifragilisticexpialadiamaticonormalizeringelimatisticantations <supercalifragilisticexpialadiamaticonormalizeringelimatisticantations@averylongandannoyingdomainname.com> - 2011-07-23 22:39 -0400
                Re: Arithmetic overflow checking Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-07-25 10:20 -0700
                Re: Arithmetic overflow checking supercalifragilisticexpialadiamaticonormalizeringelimatisticantations <supercalifragilisticexpialadiamaticonormalizeringelimatisticantations@averylongandannoyingdomainname.com> - 2011-07-25 13:29 -0400
                Re: Arithmetic overflow checking David Lamb <dalamb@cs.queensu.ca> - 2011-07-25 13:35 -0400
                Re: Arithmetic overflow checking lewbloch <lewbloch@gmail.com> - 2011-07-23 09:39 -0700
                Re: Arithmetic overflow checking Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-07-23 21:09 +0000
                Re: Arithmetic overflow checking Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-07-23 21:24 +0000
          Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 16:57 -0400
      Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-20 22:12 -0400
    Re: Arithmetic overflow checking Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-07-21 06:41 -0300
      Re: Arithmetic overflow checking Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 16:38 -0400

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