Re: [boost] [math distributions] Laplace distribution

Subject: Re: [boost] [math distributions] Laplace distribution
From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2008-11-28 05:31:32

> -----Original Message-----
> From: boost-bounces_at_[hidden] [mailto:boost-bounces_at_[hidden]]
On
> Behalf Of Thijs van den Berg
> Sent: 27 November 2008 20:59
> To: boost_at_[hidden]
> Subject: Re: [boost] [math distributions] Laplace distribution
> 
> I solved those by changing
> > int test_main(int, char* [])
> into
> > BOOST_AUTO_TEST_CASE( test1 )
> hope that's ok...

More than - an improvement - using the latest recommended way of starting
Boost.Test

> Anyway, I'll be able to add some validated code to the sandbox soon.

Ping when committed.

PS Take care to follow other distribution tests as examples - there are
several of pits (into which I have fallen, serially)

Since I think the formulae only use built-in functions like exp, they should
be quite accurate and you should be able to set the tolerance as a few eps
even when round tripping.  

Don't forget too that (for full portability) constants should be declared
and long double

static_cast<RealType>(0.53958342416056554201085167134004L)

(unless they are 'exactly representable' like 0.5, 0.25...)

> After that ...multi-dim-Gaussian's! 

Now the real fun will begin!

Paul