Re: [Bug-gsl] J0(5) with a 64bit machine: bug or feature ?

[Brian Gough]

At Wed, 30 Sep 2009 11:09:13 +0200,
Luciano Ribichini wrote:
> The computation of J0(5) as shown in the gsl-ref manual gives, on my
> machine, a slightly different result: the last three digits are 642
> on my machine with the manual report, for the last three digits, 920
> 
> I use a 64 bit machine with Debian 5.0 and gsl 1.10 The compiler is
> gcc version 4.3.2
> 
> The minimal code that produce the inconsistency is the one given at
> the beginning of the gsl-ref manual to compute J0(5).
> 
> Should I worry about such slight difference in J0(5) between my
> machine and the value given in th gsl-ref ?  Which one is the
> "right" value ?

Thanks for your email.  It's safe to ignore the change in the last few
digits, since it is O(10^-16) which is at the level of rounding error.

-- 
Brian Gough

GNU Scientific Library -
http://www.gnu.org/software/gsl/