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From: ok@goanna.cs.rmit.edu.au (Richard A. O'Keefe)
Subject: Re: CRC in Ada?
Date: 1997/03/14
Message-ID: <5gapv9$gmm$1@goanna.cs.rmit.edu.au>#1/1
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References: <1997Mar2.220652@nova.wright.edu> <1997Mar5.083233.1@eisner>
 	<E6Kxux.FL9@world.std.com> <1997Mar5.131846.1@eisner>
 	<E6Lpv3.AoL@world.std.com> <dewar.857652688@merv>
 <OHK.97Mar7080335@edeber.tfdt-o.nta.no> <dewar.857749952@merv>
 <3324A8B9.4A18@netcom.com> <dewar.858096812@merv> <3325DD47.565E@netcom.com>
 <dewar.858137671@merv> <3326B7A3.6ECF@netcom.com>
Organization: Comp Sci, RMIT University, Melbourne, Australia.
Newsgroups: comp.lang.ada
NNTP-Posting-User: ok
Date: 1997-03-14T00:00:00+00:00
List-Id: <comp.lang.ada>


Jim Balter <jqb@netcom.com> writes:
>I have already quoted you as saying that a single I/O call per block
>by the *C library* (not a comment about ADA) is not guaranteed.

I have the C standard and the POSIX standard, and for the life of me
I cannot find in either document _any_ guarantee about how many system
calls or even how many read() calls will be done for fread() or any
other C stdio input function call.  In fact, it is quite easy to set
up a situation where there _is_ and _has to be_ a read() call for
every character transferred.
-- 
Will maintain COBOL for money.
Richard A. O'Keefe; http://www.cs.rmit.edu.au/%7Eok; RMIT Comp.Sci.