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From: Jan Burse <janburse@fastmail.fm>
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Subject: Re: higher precision doubles
Date: Sat, 06 Aug 2011 13:03:22 +0200
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Patricia Shanahan schrieb:
> to do so. Even without strictfp, the mantissa sizes and therefore the
> precision are fixed.
>
I was thinking about double extended, where the precision does
not stay fixed but is increased.

http://de.wikipedia.org/wiki/IEEE_754#Zahlenformate_und_andere_Festlegungen_des_IEEE-754-Standards

Double extended has in minimum 79 bit whereby 63 bit are mantissa
and 15 bit are exponent.

I was wondering whether I can take advantage of an AMD64. Since
it has 80bit IEEE floating point registers:

http://people.freebsd.org/~lstewart/references/amd64.pdf
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