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| From | raltbos@xs4all.nl (Richard Bos) |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: C program. run time abend, range fault. Is this the correct solution? |
| Date | 2015-01-05 15:00 +0000 |
| Organization | Go wash your mouth. |
| Message-ID | <54aaa677.16640937@news.xs4all.nl> (permalink) |
| References | <3636bf65-fa27-43a6-b54f-45477b249b5d@googlegroups.com> <m71ng8$ofl$1@speranza.aioe.org> <m73jbn$3dc$1@speranza.aioe.org> <ea8bbea1-0471-4243-bb70-205ca6522d4c@googlegroups.com> <m8296i$jbv$1@speranza.aioe.org> |
jacob navia <jacob@spamsink.net> wrote:
> Replace ALL calls to pow(a,b) with Pow(a,b)
(Or, for clarity, pow_bounds_checked(a,b).)
> Then you write:
>
> double Pow(double a, double b)
> {
> if (test_described_in_my_last_post)
> return 1e308;
> return pow(a,b);
> }
This is a good temporary solution, but for the final product, given that
(IIUC) the OP only ever uses integer values, I'd replace it by an
integer_pow() function. And then measure which is more efficient.
> Of course you could take other actions if the test fails instead of
> returning 1e308 that could make other calculations overflow!
You could, but then, in any case where that happens, the _real_ value
would've caused the same overflow, so that's not a problem as such.
Richard
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C program. run time abend, range fault. Shiva <subramanian.klu@gmail.com> - 2014-12-16 00:47 -0800
Re: C program. run time abend, range fault. jt@toerring.de (Jens Thoms Toerring) - 2014-12-16 10:31 +0000
Re: C program. run time abend, range fault. Shiva <subramanian.klu@gmail.com> - 2014-12-16 11:33 -0800
Re: C program. run time abend, range fault. Barry Schwarz <schwarzb@dqel.com> - 2014-12-16 14:27 -0800
Re: C program. run time abend, range fault. jt@toerring.de (Jens Thoms Toerring) - 2014-12-16 23:08 +0000
Re: C program. run time abend, range fault. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-16 23:44 +0000
Re: C program. run time abend, range fault. glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-16 19:37 +0000
Re: C program. run time abend, range fault. jt@toerring.de (Jens Thoms Toerring) - 2014-12-17 00:12 +0000
Re: C program. run time abend, range fault. Shiva <subramanian.klu@gmail.com> - 2014-12-17 13:05 -0800
Re: C program. run time abend, range fault. Barry Schwarz <schwarzb@dqel.com> - 2014-12-17 15:06 -0800
Re: C program. run time abend, range fault. Richard Heathfield <invalid@see.sig.invalid> - 2014-12-17 23:15 +0000
Re: C program. run time abend, range fault. Keith Thompson <kst-u@mib.org> - 2014-12-17 16:00 -0800
Re: C program. run time abend, range fault. Keith Thompson <kst-u@mib.org> - 2014-12-17 15:56 -0800
Re: C program. run time abend, range fault. Shiva <subramanian.klu@gmail.com> - 2014-12-18 12:28 -0800
Re: C program. run time abend, range fault. Barry Schwarz <schwarzb@dqel.com> - 2014-12-18 14:07 -0800
Re: C program. run time abend, range fault. Barry Schwarz <schwarzb@dqel.com> - 2014-12-18 14:16 -0800
Re: C program. run time abend, range fault. jacob navia <jacob@spamsink.net> - 2014-12-19 00:55 +0100
Re: C program. run time abend, range fault. jt@toerring.de (Jens Thoms Toerring) - 2014-12-19 00:18 +0000
Re: C program. run time abend, range fault. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-19 01:12 +0000
Re: C program. run time abend, range fault. jt@toerring.de (Jens Thoms Toerring) - 2014-12-18 01:00 +0000
Re: C program. run time abend, range fault. James Kuyper <jameskuyper@verizon.net> - 2014-12-17 22:29 -0500
Re: C program. run time abend, range fault. gazelle@shell.xmission.com (Kenny McCormack) - 2014-12-18 09:18 +0000
Re: C program. run time abend, range fault. Martin Shobe <martin.shobe@yahoo.com> - 2014-12-18 11:10 -0600
Re: C program. run time abend, range fault. Shiva <subramanian.klu@gmail.com> - 2014-12-18 11:38 -0800
Re: C program. run time abend, range fault. James Kuyper <jameskuyper@verizon.net> - 2014-12-18 15:24 -0500
Re: C program. run time abend, range fault. Shiva <subramanian.klu@gmail.com> - 2014-12-18 12:37 -0800
C program. run time abend, range fault. asetofsymbols@gmail.com - 2014-12-18 22:21 -0800
Re: C program. run time abend, range fault. Is this the correct solution? jacob navia <jacob@spamsink.net> - 2014-12-19 18:32 +0100
Re: C program. run time abend, range fault. Is this the correct solution? jacob navia <jacob@spamsink.net> - 2014-12-20 11:34 +0100
Re: C program. run time abend, range fault. Is this the correct solution? Shiva <subramanian.klu@gmail.com> - 2014-12-31 11:48 -0800
Re: C program. run time abend, range fault. Is this the correct solution? James Kuyper <jameskuyper@verizon.net> - 2014-12-31 15:49 -0500
Re: C program. run time abend, range fault. Is this the correct solution? Keith Thompson <kst-u@mib.org> - 2014-12-31 13:07 -0800
Re: C program. run time abend, range fault. Is this the correct solution? Geoff <geoff@invalid.invalid> - 2014-12-31 13:57 -0800
Re: C program. run time abend, range fault. Is this the correct solution? Keith Thompson <kst-u@mib.org> - 2014-12-31 16:02 -0800
Re: C program. run time abend, range fault. Is this the correct solution? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-31 22:55 -0800
Re: C program. run time abend, range fault. Is this the correct solution? raltbos@xs4all.nl (Richard Bos) - 2015-01-05 14:56 +0000
Re: C program. run time abend, range fault. Is this the correct solution? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-31 21:51 +0000
Re: C program. run time abend, range fault. Is this the correct solution? jacob navia <jacob@spamsink.net> - 2015-01-01 02:51 +0100
Re: C program. run time abend, range fault. Is this the correct solution? raltbos@xs4all.nl (Richard Bos) - 2015-01-05 15:00 +0000
Re: C program. run time abend, range fault. Is this the correct solution? Shiva <subramanian.klu@gmail.com> - 2015-01-05 09:45 -0800
Re: C program. run time abend, range fault. Is this the correct solution? Geoff <geoff@invalid.invalid> - 2015-01-05 11:02 -0800
Re: C program. run time abend, range fault. Is this the correct solution? Shiva <subramanian.klu@gmail.com> - 2015-01-06 10:33 -0800
Re: C program. run time abend, range fault. Is this the correct solution? James Kuyper <jameskuyper@verizon.net> - 2015-01-06 14:09 -0500
Re: C program. run time abend, range fault. Is this the correct solution? Shiva <subramanian.klu@gmail.com> - 2015-01-06 12:32 -0800
Re: C program. run time abend, range fault. Is this the correct solution? James Kuyper <jameskuyper@verizon.net> - 2015-01-06 15:47 -0500
Re: C program. run time abend, range fault. Is this the correct solution? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-01-06 23:58 +0000
Re: C program. run time abend, range fault. Is this the correct solution? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-01-07 04:31 +0000
Re: C program. run time abend, range fault. Is this the correct solution? Robert Wessel <robertwessel2@yahoo.com> - 2015-01-06 23:36 -0600
Re: C program. run time abend, range fault. Is this the correct solution? Richard Heathfield <invalid@see.sig.invalid> - 2015-01-07 07:08 +0000
Re: C program. run time abend, range fault. Is this the correct solution? Shiva <subramanian.klu@gmail.com> - 2015-01-09 13:46 -0800
Re: C program. run time abend, range fault. Is this the correct solution? Geoff <geoff@invalid.invalid> - 2015-01-05 09:56 -0800
Re: C program. run time abend, range fault. Geoff <geoff@invalid.invalid> - 2015-01-01 14:38 -0800
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