Date: Sat, 01 Jun 1996 12:42:18 +0200 (MET DST)
From: "Christoph P. Kukulies" <kuku AT gilberto DOT physik DOT rwth-aachen DOT de>
Subject: Re: What is 'volatile'?
In-reply-to: <4omq1d$ga8@sky.inp.nsk.su>
To: myskin AT inp DOT nsk DOT su
Cc: djgpp AT delorie DOT com
Reply-to: Christoph Kukulies <kuku AT gilberto DOT physik DOT rwth-aachen DOT de>
Message-id: <199606011042.MAA29398@gilberto.physik.rwth-aachen.de>
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> Hi all!
> Tell me please what does the keyword 'volatile' or '__volatile__'
> mean. I can't find any info about it in FAQ or docs.

It's an extension to C (can be found in the gcc docs) and means
that something declared 'volatile' (a function or a variable or
another entity) should not be touched by any compiler optimization
algorithm..
Sure there's a bit more behind it but this is the most common
reason to declare a piece of code 'volatile'.

> 
> Thanks in advance,
> V. Myskin
> 
> 
> 
> 

--Chris Christoph P. U. Kukulies kuku AT gil DOT physik DOT rwth-aachen DOT de