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From: Nobody <nobody@nowhere.com>
Subject: Re: a.index(float('nan')) fails
Date: Sat, 27 Oct 2012 17:45:50 +0100
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On Sat, 27 Oct 2012 08:56:16 +0200, Thomas Rachel wrote:

> Am 27.10.2012 06:48 schrieb Dennis Lee Bieber:
> 
>> 	I don't know about the more modern calculators, but at least up
>> through my HP-41CX, HP calculators didn't do (binary) "floating
>> point"... They did a form of BCD with a fixed number of significant
>> /decimal/ digits
> 
> Then, what about sqrt(x)**2 or arcsin(sin(x))? Did that always return 
> the original x?

I'd be impressed if it managed the latter, i.e. arcsin(sin(0))==0 while
arcsin(sin(pi))==pi ;)