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NNTP-Posting-Date: Thu, 08 May 2014 10:04:02 -0500
From: David Hume <David.Hume@example.com>
Newsgroups: comp.misc
Subject: Re: Calculator Accuracy
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RS Wood <rsw@therandymon.com> writes:

> I *just yesterday* threw away the HP15c I'd used since 1988 (sniff, sniff -
> really).  That was an awesome device reminiscent of the old HP back when it
> was a neat company.  For $9 I bought the 15CSciCalc app, which was
> well-appreciated by previous users.
>
> 97.0870e-5
>
> But holy crap!  That's relatively unimpressive!  Does someone have a real
> HP15C so I can compare the hardware device's results to this app that is
> supposed to duplicate its circuitry?

I am not sure the test is meaningful anyway. The output from sin(x) is
not an angle, so what sense is there in passing it into cosine? Working
in radians might affect the accuracy because sin(45)=0.85, 0.85 is a
larger angle in radians than it is in degrees.