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Date: Sat, 11 Feb 2012 17:21:25 +0100
From: Georg Bauhaus <rm.dash-bauhaus@futureapps.de>
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Subject: Re: Arctan: to use with single or with double arguments?
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Date: 2012-02-11T17:21:26+01:00
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On 11.02.12 16:29, Simon Wright wrote:
> AdaMagica<christ-usch.grein@t-online.de>  writes:
>
>> It's a severe bug to use positional association for Arctan!
>
> Only a bug if you get it wrong. Otherwise it's a meta-bug.
>
> Not sure that Arctan (Y =>  X, X =>  Y) is exactly _clear_.

No clarity at all when the brain switches between coordinate
system conventions, row or column major order, and similar
non-Ada ways of expressing things.  Since the semantics of
any program calling Arctan is not changed if the parameter
name X becomes <<unambiguously-denoting-what-we-mean>>, thus
since there will be an absolutely safe change set if such
a name were introduced, isn't it about time to get rid of
names that only a high school delusion holds up against?