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From: Jan Burse <janburse@fastmail.fm>
Newsgroups: comp.lang.java.programmer
Subject: Re: higher precision doubles
Date: Mon, 08 Aug 2011 19:16:17 +0200
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Jan Burse schrieb:
> According to stack overflow there are a couple of solutions around:
> http://stackoverflow.com/questions/6979926/higher-precision-doubles-and-trigonometric-functions-in-java
>
> Apfloat and JScience.
But I did not yet have time to put my hands on Apfloat,
and it is also not clear what forms the basis for the
algorithms there.

Usually Taylor expansion leads to nowhere. For sin and
the like for example developing polynom coefficents from
a set of orthogonal chebyshev polynoms gives better
results.

But of course there is a tradeof between accuracy and
computation time. See for example page 17/18 of:
http://rnc7.loria.fr/astafiev.pdf

Bye