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From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: CRC in Ada?
Date: 1997/03/11
Message-ID: <dewar.858138084@merv>#1/1
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References: <1997Mar2.220652@nova.wright.edu> <oslo83b70l.fsf@ted.vigra.com>
 	<331d3cf9.1190126@news.logica.co.uk> <1997Mar5.083233.1@eisner>
 	<E6Kxux.FL9@world.std.com> <1997Mar5.131846.1@eisner>
 	<5fmo1k$adm@mulga.cs.mu.OZ.AU> <dewar.857693222@merv>
 <OHK.97Mar7091019@edeber.tfdt-o.nta.no> <dewar.857750112@merv>
 <3324A613.812@netcom.com> <dewar.858096758@merv> <3325DF35.3BDF@netcom.com>
Organization: New York University
Newsgroups: comp.lang.ada
Date: 1997-03-11T00:00:00+00:00
List-Id: <comp.lang.ada>


Jim Balter said

<<And there has been other material in which you have implied that
multiple system calls might be involved.>>

Just so this is crystal clear at this stage, at least to other readers
than Jim, I definitely did NOT imply that there are multiple system calls.
It maybe that Jim does not know Ada 95 very well, and that is how he got
confused.

What I did say was that if you use String'Output and String'Input, the
RM strongly implies character by character reads, since stream I/O is
defined as being component wise. But of course this does not result in
a system call per character, at least not in a reasonable implementation.
For example in GNAT, this translates eventually into a normal C stream
operation, which will typically be buffered.