Re: [Help-glpk] control parameters and round-off error

[Ali Baharev]

Thanks for the tips.

There was an LP problem where 2.0 <= x_j <= 3.0 and solving min x_j
resulted 1.99995. I have lost this example and i do not remember the
numbers but it was something like that. It would be difficult to
explain the inconsistency with the current one.

It is OK if the result is inaccurate, however i would require an error
estimate (saying that e.g. the third digit may be incorrect).

Computing dot products very precisely is possible using accumulators of C-XSC:

http://xsc.de

Ali