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Date: Mon, 19 Sep 2005 18:03:19 +0200
From: Georg Bauhaus <bauhaus@futureapps.de>
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Subject: Re: loop variant in SPARK ADA
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Date: 2005-09-19T18:02:41+02:00
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Jeffrey Carter wrote:

>> Read the book. It seems there is no
>> way to assert a loop variant to
>> help prove termination (I am thinking
>> of the Eiffel loop variant).
> 
> 
> Presumably you mean a loop invariant?

Eiffel does have both an invariant and a variant in its loop,

from ...
invariant
  invariant_name: cond
variant
  variant_name: int_var   -- expr >= 0, decreasing
until cond
loop
 ...
end loop