[racket] matrix-solve and approximation errors

Sounds like a good idea, but possibly cumbersome to program.
Or maybe just define a error-checking-level parameter that can be adjusted
from `unsafe` to `noob`?



On Wed, Apr 16, 2014 at 9:18 PM, Konrad Hinsen
<konrad.hinsen at fastmail.net>wrote:

> Neil Toronto writes:
>
>  > The design decision is to determine how much the solvers should automate
>  > detecting and responding to floating-point error. I have no idea what
>  > extent popular linear algebra libraries go to, nor whether we should try
>  > to do better.
>
> Any linear-algebra library meant for "serious" work does not do any
> non-essential work "just" for error checking. Performance is king.
> Users are supposed to know the pitfalls and take care to avoid them.
> Unfortunately, many don't.
>
> I'd say that the best compromise is a two-layer library: a low-level
> layer with "raw" algorithms and good performance, and a layer on top
> of that with more user-friendliness. However, I haven't seen any such
> design, so developing it may well represent some serious work.
>
> Konrad.
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