Re: Hi presision problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg84116] Re: [mg84098] Hi presision problem*From*: Daniel Lichtblau <danl at wolfram.com>*Date*: Mon, 10 Dec 2007 20:41:35 -0500 (EST)*References*: <200712100938.EAA16396@smc.vnet.net>

ArtÅ«ras Acus wrote: > Dear Group, > > How to calculate the expression with higher than machine precision? > Mathematica 6 seems runs into serious problems (gives Inderetrminate) > > N[1 - Pi^(-InverseGammaRegularized[1, 0, 1 - 1/Sqrt[E]]) , 20] > > > Sincerely, Arturas Acus This is a bug which came about due to subtle changes in N[] during development of version 5. It will be fixed for a future release. At present a workaround would be to Do the numerical evaluation on an argument of InverseGammaRegularized, e.g. In[2]:= InputForm[1 - Pi^(-InverseGammaRegularized[1, 0, 1 - 1/Sqrt[N[E,20]]])] Out[2]//InputForm= 0.43581041645224371305192054846675547818`19.857529934737872 Daniel Lichtblau Wolfram Research

**References**:**Hi presision problem***From:*ArtÅras Acus <acus@itpa.lt>