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Groups > comp.lang.c > #101612
| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: comparison logic |
| Date | 2017-01-13 16:06 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87h953osg3.fsf@bsb.me.uk> (permalink) |
| References | (3 earlier) <s8j57c9s06a8iodjk2oovsn409gadcr1ev@4ax.com> <edpa7vFt8c3U1@mid.individual.net> <87vatkquaq.fsf@bsb.me.uk> <edrmliFgh80U1@mid.individual.net> <o5aq8n$3mc$1@dont-email.me> |
Noob <root@127.0.0.1> writes:
> On 13/01/2017 10:58, Michael Holiday wrote:
>
>> void diff_line( char *lineone, char *linetwo, int linenumber )
>> {
>> if(strcmp (lineone, linetwo) < 0 || strcmp (lineone, linetwo) > 0)
>
> (a < 0) || (a > 0) is strictly equivalent to a != 0
I'm not sure what you intend by "strictly equivalent" but they are
different in that `a` may be evaluated more than once (and, though not
relevant here) they are different when `a` is a floating point NaN.
> I would use the latter.
Agreed, though I sometimes use plain `a` if the context means that makes
sense.
--
Ben.
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linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-07 23:49 -0800
Re: linking precedence rules Ian Collins <ian-news@hotmail.com> - 2017-01-08 21:20 +1300
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-08 01:32 -0800
Re: linking precedence rules "James R. Kuyper" <jameskuyper@verizon.net> - 2017-01-08 11:08 -0500
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-12 03:25 -0800
Re: linking precedence rules Noob <root@127.0.0.1> - 2017-01-12 13:31 +0100
OT Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-14 01:18 -0800
Re: linking precedence rules Barry Schwarz <schwarzb@dqel.com> - 2017-01-08 15:38 -0800
Re: linking precedence rules "James R. Kuyper" <jameskuyper@verizon.net> - 2017-01-08 18:46 -0500
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-12 04:13 -0800
Re: linking precedence rules Richard Heathfield <rjh@cpax.org.uk> - 2017-01-12 12:21 +0000
Re: linking precedence rules Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-15 00:23 -0800
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-16 06:20 -0800
Re: linking precedence rules Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-30 05:10 -0800
Re: linking precedence rules Manfred <noname@invalid.add> - 2017-02-04 17:12 +0100
Re: linking precedence rules Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-08 20:47 -0800
Re: linking precedence rules Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-12 13:31 +0000
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-13 01:58 -0800
Re: linking precedence rules Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-13 10:41 +0000
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-14 03:49 -0800
Re: linking precedence rules BartC <bc@freeuk.com> - 2017-01-14 12:03 +0000
Re: linking precedence rules David Brown <david.brown@hesbynett.no> - 2017-01-14 14:02 +0100
Re: linking precedence rules BartC <bc@freeuk.com> - 2017-01-14 13:46 +0000
Re: linking precedence rules gazelle@shell.xmission.com (Kenny McCormack) - 2017-01-14 14:23 +0000
Re: linking precedence rules Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-14 14:31 +0000
Re: linking precedence rules BartC <bc@freeuk.com> - 2017-01-14 16:18 +0000
Re: linking precedence rules David Brown <david.brown@hesbynett.no> - 2017-01-14 17:49 +0100
Re: linking precedence rules BartC <bc@freeuk.com> - 2017-01-14 17:21 +0000
Re: linking precedence rules Ian Collins <ian-news@hotmail.com> - 2017-01-15 10:12 +1300
Re: linking precedence rules BartC <bc@freeuk.com> - 2017-01-14 21:59 +0000
Re: linking precedence rules supercat@casperkitty.com - 2017-01-14 14:12 -0800
Re: linking precedence rules Ian Collins <ian-news@hotmail.com> - 2017-01-15 11:39 +1300
Re: linking precedence rules Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-14 16:03 -0800
Re: linking precedence rules raltbos@xs4all.nl (Richard Bos) - 2017-01-18 11:51 +0000
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-15 02:04 -0800
Re: linking precedence rules David Brown <david.brown@hesbynett.no> - 2017-01-14 23:48 +0100
Re: linking precedence rules Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-14 20:28 +0000
The Unix way vs. the Windows way (Was: linking precedence rules) gazelle@shell.xmission.com (Kenny McCormack) - 2017-01-14 14:14 +0000
Re: The Unix way vs. the Windows way (Was: linking precedence rules) BartC <bc@freeuk.com> - 2017-01-14 14:29 +0000
Re: The Unix way vs. the Windows way (Was: linking precedence rules) supercat@casperkitty.com - 2017-01-14 14:20 -0800
Re: linking precedence rules Michael Holiday <Mike@example.invalid> - 2017-01-15 01:40 -0800
Re: linking precedence rules BartC <bc@freeuk.com> - 2017-01-15 11:43 +0000
Re: linking precedence rules antispam@math.uni.wroc.pl - 2017-01-18 19:55 +0000
Re: linking precedence rules Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-14 14:22 +0000
Re: comparison logic Noob <root@127.0.0.1> - 2017-01-13 16:05 +0100
Re: comparison logic Richard Heathfield <rjh@cpax.org.uk> - 2017-01-13 15:37 +0000
Re: comparison logic Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-13 16:06 +0000
Re: comparison logic Noob <root@127.0.0.1> - 2017-01-13 19:37 +0100
Re: comparison logic BartC <bc@freeuk.com> - 2017-01-13 18:42 +0000
Re: comparison logic Richard Heathfield <rjh@cpax.org.uk> - 2017-01-13 18:49 +0000
Re: comparison logic Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-13 20:50 +0000
Re: comparison logic Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-14 01:05 -0800
Re: comparison logic Michael Holiday <Mike@example.invalid> - 2017-01-14 01:27 -0800
Re: comparison logic Keith Thompson <kst-u@mib.org> - 2017-01-14 13:56 -0800
Re: comparison logic Richard Heathfield <rjh@cpax.org.uk> - 2017-01-15 14:45 +0000
Re: comparison logic Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-15 20:42 -0800
Re: comparison logic Keith Thompson <kst-u@mib.org> - 2017-01-15 21:04 -0800
Re: comparison logic Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-30 04:47 -0800
Re: comparison logic Keith Thompson <kst-u@mib.org> - 2017-01-30 11:40 -0800
Re: comparison logic Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-03 16:42 -0800
Re: comparison logic Keith Thompson <kst-u@mib.org> - 2017-02-03 18:45 -0800
Re: comparison logic Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-08 21:03 -0800
Re: comparison logic supercat@casperkitty.com - 2017-02-09 08:07 -0800
Re: comparison logic Keith Thompson <kst-u@mib.org> - 2017-02-09 08:50 -0800
Re: comparison logic supercat@casperkitty.com - 2017-02-09 12:15 -0800
Re: comparison logic Keith Thompson <kst-u@mib.org> - 2017-02-09 12:38 -0800
Re: comparison logic supercat@casperkitty.com - 2017-02-09 14:13 -0800
Re: comparison logic Keith Thompson <kst-u@mib.org> - 2017-02-09 14:45 -0800
Re: comparison logic Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-12 10:20 -0800
Re: linking precedence rules BartC <bc@freeuk.com> - 2017-01-12 14:32 +0000
Re: linking precedence rules James Kuyper <jameskuyper@verizon.net> - 2017-01-12 13:33 -0500
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