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Groups > comp.lang.python > #46812
| From | Grant Edwards <invalid@invalid.invalid> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: How to get an integer from a sequence of bytes |
| Date | 2013-06-03 22:34 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <koj5ks$sb2$1@reader1.panix.com> (permalink) |
| References | (3 earlier) <mailman.2447.1369941788.3114.python-list@python.org> <kog67o$pt2$1@news.albasani.net> <mailman.2571.1370224134.3114.python-list@python.org> <koi9ch$3ps$1@reader1.panix.com> <mailman.2607.1370297269.3114.python-list@python.org> |
On 2013-06-03, Dave Angel <d@davea.name> wrote:
> On 06/03/2013 10:31 AM, Grant Edwards wrote:
>> On 2013-06-03, Dennis Lee Bieber <wlfraed@ix.netcom.com> wrote:
>>> On Sun, 02 Jun 2013 21:25:45 +0200, Mok-Kong Shen
>>> <mok-kong.shen@t-online.de> declaimed the following in
>>> gmane.comp.python.general:
>>>
>>>
>>>> b'7' is the byte with the character 7 in a certain code, so that's
>>>> ok. In other PLs one assigns an int to a byte, with that int in either
>>>
>>> In other languages "byte" is an 8-bit signed/unsigned numeric.
>>
>> That's a common assumption, but historically, a "byte" was merely the
>> smallest addressable unit of memory. The size of a "byte" on widely
>> used used CPUs ranged from 4 bits to 60 bits.
>>
>
><Hehe> I recall rewriting the unpacking algorithm to get the 10
> characters from each byte, on such a machine.
Yep. IIRC there were CDC machines (Cyber 6600?) with a 60-bit wide
"byte" and a 6-bit wide upper-case-only character set. ISTM that the
Pascal compiler limited you to 6 significant characters in variable
names so that it could use a simple single register compare while
doing symbol lookups...
I think some IBM machines had 60-bit "bytes" as well.
--
Grant Edwards grant.b.edwards Yow! DIDI ... is that a
at MARTIAN name, or, are we
gmail.com in ISRAEL?
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How to get an integer from a sequence of bytes Mok-Kong Shen <mok-kong.shen@t-online.de> - 2013-05-27 16:45 +0200
Re: How to get an integer from a sequence of bytes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-27 15:00 +0000
RE: How to get an integer from a sequence of bytes Carlos Nepomuceno <carlosnepomuceno@outlook.com> - 2013-05-28 03:37 +0300
Re: How to get an integer from a sequence of bytes Ned Batchelder <ned@nedbatchelder.com> - 2013-05-27 11:30 -0400
Re: How to get an integer from a sequence of bytes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-28 00:31 +0000
Re: How to get an integer from a sequence of bytes Dave Angel <davea@davea.name> - 2013-05-27 20:41 -0400
Re: How to get an integer from a sequence of bytes Mok-Kong Shen <mok-kong.shen@t-online.de> - 2013-05-30 20:26 +0200
Re: How to get an integer from a sequence of bytes Ian Kelly <ian.g.kelly@gmail.com> - 2013-05-30 12:42 -0600
Re: How to get an integer from a sequence of bytes jmfauth <wxjmfauth@gmail.com> - 2013-05-30 11:53 -0700
Re: How to get an integer from a sequence of bytes Ned Batchelder <ned@nedbatchelder.com> - 2013-05-30 15:22 -0400
Re: How to get an integer from a sequence of bytes Mok-Kong Shen <mok-kong.shen@t-online.de> - 2013-06-02 21:25 +0200
Re: How to get an integer from a sequence of bytes Chris Angelico <rosuav@gmail.com> - 2013-06-03 05:54 +1000
Re: How to get an integer from a sequence of bytes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-06-02 21:48 -0400
Re: How to get an integer from a sequence of bytes Grant Edwards <invalid@invalid.invalid> - 2013-06-03 14:31 +0000
Re: How to get an integer from a sequence of bytes Dave Angel <d@davea.name> - 2013-06-03 18:07 -0400
Re: How to get an integer from a sequence of bytes Grant Edwards <invalid@invalid.invalid> - 2013-06-03 22:34 +0000
Re: How to get an integer from a sequence of bytes Dan Stromberg <drsalists@gmail.com> - 2013-06-03 15:41 -0700
Re: How to get an integer from a sequence of bytes Grant Edwards <invalid@invalid.invalid> - 2013-06-04 13:39 +0000
Re: How to get an integer from a sequence of bytes Joshua Landau <joshua.landau.ws@gmail.com> - 2013-06-04 20:51 +0100
Re: How to get an integer from a sequence of bytes Chris Angelico <rosuav@gmail.com> - 2013-06-05 07:49 +1000
Re: How to get an integer from a sequence of bytes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-06-04 20:34 -0400
Re: How to get an integer from a sequence of bytes Tim Roberts <timr@probo.com> - 2013-06-04 22:11 -0700
Re: How to get an integer from a sequence of bytes Fábio Santos <fabiosantosart@gmail.com> - 2013-06-12 15:00 +0100
Re: How to get an integer from a sequence of bytes Grant Edwards <invalid@invalid.invalid> - 2013-06-12 14:42 +0000
RE: How to get an integer from a sequence of bytes Carlos Nepomuceno <carlosnepomuceno@outlook.com> - 2013-06-04 02:18 +0300
Re: How to get an integer from a sequence of bytes Grant Edwards <invalid@invalid.invalid> - 2013-06-04 13:42 +0000
RE: How to get an integer from a sequence of bytes Carlos Nepomuceno <carlosnepomuceno@outlook.com> - 2013-06-04 16:58 +0300
Re: How to get an integer from a sequence of bytes Dan Stromberg <drsalists@gmail.com> - 2013-06-03 16:47 -0700
Re: How to get an integer from a sequence of bytes Grant Edwards <invalid@invalid.invalid> - 2013-05-28 16:04 +0000
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