From: Xue Fuqiao <xfq.free@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: About "set bits"
Date: Wed, 10 Apr 2013 21:46:27 +0800 [thread overview]
Message-ID: <20130410214627.6ca217f53415c0c6d1837edd@gmail.com> (raw)
In (info "(elisp) Bindat Spec"):
`bits LEN'
List of set bits in LEN bytes. The bytes are taken in big endian
order and the bits are numbered starting with `8 * LEN - 1' and
ending with zero. For example: `bits 2' unpacks `#x28' `#x1c' to
`(2 3 4 11 13)' and `#x1c' `#x28' to `(3 5 10 11 12)'.
I don't know what "set bits" means here. I have searched the archives,
and found two related threads:
http://lists.gnu.org/archive/html/help-gnu-emacs/2005-06/msg00087.html
http://lists.gnu.org/archive/html/help-gnu-emacs/2013-01/msg00103.html
But they didn't help. I have also searched the web and seen the
commentary header of bindat.el, but nothing helped to me. Can I get a
pointer to information on this concept (or on byte packing)?
--
Xue Fuqiao
English is not my native language; please excuse typing errors.
next reply other threads:[~2013-04-10 13:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-10 13:46 Xue Fuqiao [this message]
2013-04-10 14:15 ` About "set bits" Thien-Thi Nguyen
2013-04-10 15:20 ` Eli Zaretskii
[not found] ` <mailman.23883.1365607222.855.help-gnu-emacs@gnu.org>
2013-04-10 15:37 ` Barry Margolin
2013-04-10 22:33 ` Xue Fuqiao
2013-04-10 22:39 ` Xue Fuqiao
2013-04-11 8:46 ` Thien-Thi Nguyen
[not found] ` <mailman.23943.1365669842.855.help-gnu-emacs@gnu.org>
2013-04-11 15:19 ` Barry Margolin
2013-04-12 4:39 ` Thien-Thi Nguyen
2013-04-12 14:20 ` Xue Fuqiao
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