From: Bart Schaefer <schaefer@brasslantern.com>
To: vogt@linux.vnet.ibm.com, zsh-users@zsh.org
Subject: Re: Determining the length of "long"?
Date: Fri, 12 Sep 2014 16:16:27 -0700 [thread overview]
Message-ID: <140912161627.ZM23323@torch.brasslantern.com> (raw)
In-Reply-To: <20140912084230.GA4226@linux.vnet.ibm.com>
On Sep 12, 9:42am, Dominik Vogt wrote:
}
} On Thu, Sep 11, 2014 at 09:39:01PM -0700, Bart Schaefer wrote:
} > if (( ${#:-"$(( [#2] (1<<31)))"} > ${#:-"$(( [#2] (1<<63)))"} ))
} > then print "zsh integer type is 32 bits"
} > elif (( ${#:-"$(( [#2] (1<<63)))"} > ${#:-"$(( [#2] (1<<64)))"} ))
} > then print "zsh integer type is 64 bits"
} > else print "zsh integer type is more than 64 bits"
} > fi
}
} Hm, I'm not really sure that works reliably because the shift
} amount may be truncated before it is used. I.e. on s390 "1 << 32"
} and "1 << 64" and "1 << 0" are all the same.
That probably means that zsh uses a 32 bit integer type on s390.
There is a reason the shift in my "if" above is 1<<31 not 32.
next prev parent reply other threads:[~2014-09-12 23:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-11 21:36 Dominik Vogt
2014-09-12 2:58 ` Kurtis Rader
2014-09-12 4:39 ` Bart Schaefer
2014-09-12 8:42 ` Dominik Vogt
2014-09-12 13:17 ` Kurtis Rader
2014-09-12 23:16 ` Bart Schaefer [this message]
2014-09-12 23:42 ` Dominik Vogt
2014-09-13 0:17 ` Bart Schaefer
2014-09-12 8:51 ` Peter Stephenson
2014-09-12 16:17 ` Roman Neuhauser
2014-09-12 17:04 ` Dominik Vogt
2014-09-12 18:10 ` Roman Neuhauser
2014-09-12 18:50 ` Dominik Vogt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=140912161627.ZM23323@torch.brasslantern.com \
--to=schaefer@brasslantern.com \
--cc=vogt@linux.vnet.ibm.com \
--cc=zsh-users@zsh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).