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From: Thien-Thi Nguyen <ttn@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: Faster binary IO, please?
Date: 15 Sep 2005 16:18:25 -0400	[thread overview]
Message-ID: <jkd5na5bla.fsf@glug.org> (raw)
In-Reply-To: <87oe6ukwcz.fsf@lexx.delysid.org>

Mario Lang <mlang@delysid.org> writes:

>  1. possibly suggest a speedup in the functions as they are now
>  2. implement some of them as a primitive in C

i suggest making the buffer in which you operate "unibyte", arranging
for the insertion of external data in the buffer (for example, in a
subprocess output handler) to use the `raw-text' character encoding, and
using bindat.el on the buffer for the (un)packing.  more info at:

(info "(elisp) Selecting a Representation")
(info "(elisp) Byte Packing")

these references are from cvs emacs.  i know the latter doesn't exist,
and don't know about the former, for released elisp.info pages.

> (defun osc-insert-float32 (value) ...)
> (defun osc-read-float32 () ...)

presently, bindat.el doesn't (yet?) have floating-point support.
it would be cool if someone (perhaps you?) were to add that.

thi

  parent reply	other threads:[~2005-09-15 20:18 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-15 18:40 Faster binary IO, please? Mario Lang
2005-09-15 19:14 ` David Kastrup
2005-09-15 20:18 ` Thien-Thi Nguyen [this message]
2005-09-16  1:03   ` Kenichi Handa

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