Re: [Boost-users] looking for some help to find some functionality

Subject: Re: [Boost-users] looking for some help to find some functionality
From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2010-09-04 13:03:12

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] [mailto:boost-users-
> bounces_at_[hidden]] On Behalf Of Steven Watanabe
> Sent: Friday, September 03, 2010 10:00 PM
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] looking for some help to find some
functionality
> 
> AMDG
> 
> Jeff T wrote:
> >   I'm new to boost, and trying to use it in an on-going development.
> > I'm looking for some functionality but I was not able to find them in
> > boost.  I appreciate your help, comments, and suggestions.
> >
> >
> >
> >  Functionality I'm looking for:
> >    1. A way determine whether a value is not a number (eg.
> > System.Double.IsNaN(double) in C#)
> >    2. A way to determine if a number if infinity (eg.
> > System.Double.IsInfinity(double) in C#)
> >
> 
>
http://www.boost.org/libs/math/doc/sf_and_dist/html/math_toolkit/utils/fpcla
> ss.html
> 
> >    3. Availability of Normal Density Function, Cumulative Normal
> > Density Function, and Inverse Cumulative Normal Density.
> >
> 
>
http://www.boost.org/libs/math/doc/sf_and_dist/html/math_toolkit/dist/dist_
> ref/dists/normal_dist.html

normal (Gaussian) Yes  -

But we don't - yet- have the *inverse* normal distribution - but I am just
adding some more distributions (inverse gamma and inverse chi squared) and I
might add this one too if there is demand. It's not trivial, but seems to
have been studied and there are some published implementations that could
probably be adapted quite easily for the Boost.Math multi-precision format.

http://home.online.no/~pjacklam/notes/invnorm/

Paul

PS I note that we obviously (from this question) still don't have an fully
effective *index* of stuff in Boost.

---
Paul A. Bristow,
Prizet Farmhouse, Kendal LA8 8AB  UK
[phone]  07714330204
pbristow_at_[hidden]