Re: [boost] Dimensional Analysis Interest?

From: Jonathan de Halleux (dehalleux_at_[hidden])
Date: 2003-10-10 08:21:08

Sure, there would be interreset for such package in a lot of engineering apps.

- I was worried about being limited to force, mass or acceleration. Can you 
do compile time combination of units ?
Take this example, I have meters and seconds, I want to build speed (ms^-1)

typedef si_units<double>::meter  meter; // meter type
typedef si_units<double>::second second; // second type

// i build a new unit
typedef divide_units< meter, second > velocity; // velocity is built from 
meter/second

- It would be nice also to merge this library with a "physical constants" 
like gravity, and others...- do you plan to support other units ? J, K, °C, 
mol, l, etc...
- did you think about a-dimensional units ? this is very common in fluid 
mechanics.

Hoping to see files on yahoo :)

At 05:35 10/10/2003 -0700, you wrote:
>On Wed, 08 Oct 2003 15:23:11 -0400, David Richardson wrote
> > Is there any interest in a class for compile time checking of
> > dimensional correctness of arithmetic expressions?  It is a great
> > debugging aid for scientific and engineering code.
>
>David -
>
>Sorry for the slow response, but I think there is certainly an interest in a
>units library for boost.  There have been several discussions, but no one
>willing to spend the time doing the work.  Before spending too much time
>getting ready for formal review you will want to upload a preliminary
>submission for folks to evaluate and discuss.  Typically libraries get evolved
>before they get reviewed and accepted.
>
>Jeff
>
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Jonathan de Halleux, Research Assistant
Center for Systems Engineering and Applied Mechanics (CESAME)
Universite catholique de Louvain
Batiment Euler , Av. Georges Lemaitre, 4 Tel : [phone]
B-1348 Louvain-la-Neuve Belgium
E-mail : dehalleux_at_[hidden]
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