Re: [Haskell-cafe] implementing RealFloat decodeFloat

2011-01-06 Thread Henning Thielemann
Claude Heiland-Allen schrieb: I've been working on [0] Haskell bindings for [1] libqd for [2] double-double and quad-double arithmetic, At the ICIAM conference in Zurich 2007 I heard about the sum algorithm with two double precision floating point numbers in three talks. :-) Nice to know that

[Haskell-cafe] implementing RealFloat decodeFloat

2010-12-22 Thread Claude Heiland-Allen
Hi everyone, I've been working on [0] Haskell bindings for [1] libqd for [2] double-double and quad-double arithmetic, and have been struggling to implement [3] RealFloat, in particular [4] decodeFloat, mostly because of its postcondition but also some issues relating to variable precision: