Re: [Haskell] for large x, log (x::Integer) :: Double

-- Inspired from Mr. Howard Oakley. Might not qualify as "good", -- but with this function I get log10(x)=849.114419903382 main = do print(show(log10(x))) x = 130142727215188116061276556022688196621810140343691778718485630367238262325689845541676397895906730024965277394371574303273329

Re: [Haskell] for large x, log (x::Integer) :: Double

On Wed, 30 Jun 2004 06:47:49 -0700 (PDT), Hal Daume III <[EMAIL PROTECTED]> wrote: >i'm looking for an accurate way to take the log of a very large integer, >for example: The standard algorithm works along these lines: (Assume for the purposes of discussion that your numbers are represented in

Re: [Haskell] for large x, log (x::Integer) :: Double

I would think to take an accurate (depends how you define accurate) arbitrary precision floating point is needed... gmp 2 supports this, but does not have a log function. The power series is the way calculators do it... you could always write a small library of operations on pairs of Integers to d

Re: [Haskell] for large x, log (x::Integer) :: Double

At 06:47 30/06/04 -0700, Hal Daume III wrote: i'm looking for an accurate way to take the log of a very large integer, This may not help, but just in case... there is an effective (approximate) algorithm for computing a log-gamma function, documented in "Numerical Recipies" by Press/Flannery/Teuk

Re: [Haskell] for large x, log (x::Integer) :: Double

On 30/6/04 19:56, Howard Oakley wrote: > - if the original number is an integer, the string length gives you the > exponent, which in log10 forms the integer part of the result Well, almost. The string length is actually 1 greater than the integer part of the result, as log10(1) = 0.0, and log10(

Re: [Haskell] for large x, log (x::Integer) :: Double

On 30/6/04 14:47, Hal Daume III wrote: > i'm looking for an accurate way to take the log of a very large integer, > for example: > > let x :: Integer = > 130142727215188116061276556022688196621810140343691778718485630367238262325689 > 845541676397895906730024965277394371574303273329260262483498

[Haskell] for large x, log (x::Integer) :: Double

i'm looking for an accurate way to take the log of a very large integer, for example: let x :: Integer = 130142727215188116061276556022688196621810140343691778718485630367238262325689845541676397895906730024965277394371574303273329260262483498476173923323279461919361195473572028476105814689924

[Haskell] Call for Participation: CIA 2004 Cooperative Information Agents

[Apologies if you receive this message more than once due to cross-posting to relevant mailing lists] +++ First Call for Participation +++ Dear colleague(s), we would like to very cordially invite you to join us at the eighth international workshop on Cooperative Information Agents (CIA 2004) to

[Haskell] CfP: Two Workshops in Aarhus, October 2004 (CPN'04 and MOCA'04)

Dear Colleagues, Below please find information about two workshops in Aarhus, Denmark, Oktober 8-13 2004. Please notice that the deadline for submission of papers is August 1. CPN'04 Fifth Workshop and Tutorial on Practical Use of Colour

[Haskell] ICTAC2004 Call for papers: Deadline is Approaching soon

[Appologies if you received multiple copies] CALL FOR CONTRIBUTION: ICTAC 2004 FIRST INTERNATIONAL COLLOQUIUM ON THEORETICAL ASPECTS OF COMPUTING Guiyang, China 20 - 24 September 2004 http://www.iist.unu.edu/ICTAC20

Re: [Haskell] Help in understanding a type error involving forall and class constraints

> Then we get the problem when we use difST in distString. I no such problem. The Glorious Glasgow Haskell Compilation System, version 6.3 ghc -H32m -Wall -O2 -fvia-C -optc-O2 -optc-march=pentium3 -optc-mfpmath=sse -fexcess-precision -fliberate-case-threshold100 -funbox-strict-fields -threaded