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| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: "Is C Still Relevant in the 21st Century?" |
| Date | 2014-12-16 16:23 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87ppbj4l8y.fsf@bsb.me.uk> (permalink) |
| References | (2 earlier) <b4diw.150158$MH.28008@fx12.am4> <kfnh9wvdgh5.fsf@x-alumni2.alumni.caltech.edu> <ipUjw.79223$AC.74876@fx29.am4> <87wq5r4ude.fsf@bsb.me.uk> <lny4q7fw9i.fsf@nuthaus.mib.org> |
Keith Thompson <kst-u@mib.org> writes:
> Ben Bacarisse <ben.usenet@bsb.me.uk> writes:
> [...]
>> The use in the BCPL manual (1967) is rather vague (it's just a pile of
>> bits that represent a value) and the usage in the B manual, as you'd
>> expect, is simply the same as C's.
>>
>> I don't have a proper citation for the B manual, but the BCPL reference
>> manual is MIT Memorandum M-352, 1967, by Martin Richards. The ALgol 68
>> revised report is easy to find.
>
> (Context: the meaning of "object".)
>
> Actually, the usage in the B manual is closer to that in BCPL than to
> the modern C meaning:
>
> An rvalue is a binary bit pattern of a fixed length. On the PDP-11
> it is 16 bits. Objects are rvalues of different kinds such as
> integers, labels, vectors, and functions. The actual kind of object
> represented is called the type of the rvalue.
Yes, that's very close to BCPL's usage. I was looking at this text
The simple external definition allocates storage for an external
object and optionally initializes it; the forms are:
name ;
or name ival ;
which is very C-like, though still open to interpretation.
BTW, I think we were looking at different documents because the one I
have does not include the exact text you quoted (but I've now found that
one -- the original AT&T memorandum).
<snip>
--
Ben.
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"Is C Still Relevant in the 21st Century?" Lynn McGuire <lmc@winsim.com> - 2014-12-10 18:17 -0600
Re: "Is C Still Relevant in the 21st Century?" G G <gdotone@gmail.com> - 2014-12-10 22:55 -0800
Re: "Is C Still Relevant in the 21st Century?" Richard Heathfield <invalid@see.sig.invalid> - 2014-12-11 09:01 +0000
Re: "Is C Still Relevant in the 21st Century?" Tim Rentsch <txr@alumni.caltech.edu> - 2014-12-16 02:41 -0800
Re: "Is C Still Relevant in the 21st Century?" Richard Heathfield <invalid@see.sig.invalid> - 2014-12-16 11:08 +0000
Re: "Is C Still Relevant in the 21st Century?" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-16 13:06 +0000
Re: "Is C Still Relevant in the 21st Century?" Richard Heathfield <invalid@see.sig.invalid> - 2014-12-16 13:14 +0000
Re: "Is C Still Relevant in the 21st Century?" Keith Thompson <kst-u@mib.org> - 2014-12-16 07:29 -0800
Re: "Is C Still Relevant in the 21st Century?" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-16 16:23 +0000
Re: "Is C Still Relevant in the 21st Century?" Tim Rentsch <txr@alumni.caltech.edu> - 2014-12-16 17:23 -0800
Re: "Is C Still Relevant in the 21st Century?" Keith Thompson <kst-u@mib.org> - 2014-12-16 18:06 -0800
Re: "Is C Still Relevant in the 21st Century?" Tim Rentsch <txr@alumni.caltech.edu> - 2014-12-17 07:35 -0800
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