From p.dalgaard@biostat.ku.dk  Wed Jun  6 17:48:08 2001
From: p.dalgaard@biostat.ku.dk (Peter Dalgaard BSA)
Date: 06 Jun 2001 18:48:08 +0200
Subject: [Rd] error in dbeta (PR#970)
In-Reply-To: pwolf@wiwi.uni-bielefeld.de's message of "Wed, 6 Jun 2001 18:31:31 +0200 (MET DST)"
References: <200106061631.SAA27378@pubhealth.ku.dk>
Message-ID: <x266e95zcn.fsf@blueberry.kubism.ku.dk>

pwolf@wiwi.uni-bielefeld.de writes:

> Full_Name: Hans Peter Wolf
> Version: 1.2.1
> OS: hpux10.20
> Submission from: (NULL) (129.70.84.25)
> 
> 
> dbeta computes a wrong result with parameters (1.3,1)
> 
> > version                
> platform hppa2.0-hp-hpux10.20
> arch     hppa2.0             
> os       hpux10.20           
> system   hppa2.0, hpux10.20  
> status                       
> major    1                   
> minor    2.1                 
> year     2001                
> month    01                  
> day      15                  
> language R                   
> > dbeta((0:5)/5,1.3,1.0)
> [1] 0.0 0.0 0.0 0.0 0.0 1.3
> > dbeta((0:5)/5,1.30001,1.0)
> [1] 0.0000000 0.8021373 0.9875537 1.1152952 1.2158296 1.3000100
> > dbeta((0:5)/5,1.29999,1.0)
> [1] 0.0000000 0.8021508 0.9875566 1.1152895 1.2158163 1.2999900

Hm. Doesn't happen with 1.2.3 on Linux and dbeta.c hasn't changed
inbetween. Any chance of getting you to step through the computations
with a debugger on you machine?

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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[Rd] error in dbeta (PR#970)
Peter Dalgaard BSA