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Re: logical XOR
From: |
Chet Ramey |
Subject: |
Re: logical XOR |
Date: |
Thu, 28 Jun 2007 18:58:25 -0400 |
User-agent: |
Thunderbird 2.0.0.4 (Macintosh/20070604) |
ackstorm wrote:
> Configuration Information [Automatically generated, do not change]:
> Machine: i486
> OS: linux-gnu
> Compiler: gcc
> Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i486'
> -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu'
> -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL
> -DHAVE_CONFIG_H -I. -I../bash -I../bash/include -I../bash/lib -g -O2
> uname output: Linux acklap03 2.6.18-4-686 #1 SMP Wed May 9 23:03:12 UTC 2007
> i686 GNU/Linux
> Machine Type: i486-pc-linux-gnu
>
> Bash Version: 3.1
> Patch Level: 17
> Release Status: release
>
> Description:
> There's bitwise AND and bitwise OR, and logical AND and logical OR, but
> for XOR there's only the bitwise version. Would be nice if the logical
> XOR would also be present (^^).
(!a) != (!b)
should work acceptably for the situations such an operator would be used.
The reason it's not there is because it's not in C.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
Live Strong. No day but today.
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/
- logical XOR, ackstorm, 2007/06/13
- Re: logical XOR,
Chet Ramey <=
- Re: logical XOR, Robert Millan [ackstorm], 2007/06/29
- Message not available