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Re: [Help-glpk] [Fwd: Suggestion for a minor accuracy improvement to glp
Re: [Help-glpk] [Fwd: Suggestion for a minor accuracy improvement to glp_exact()]
Wed, 07 Jun 2017 15:28:35 +0300
> From: Brendan McKay <address@hidden>
> To: address@hidden
> Subject: Suggestion for a minor accuracy improvement to glp_exact()
> Date: Mon, 5 Jun 2017 16:59:20 +1000
> Version 4.61.
> I know there is already movement towards getting exact values
> out of glp_exact(). Meanwhile, there is an easy way to improve
> the floating-point value for the objective function. At the moment
> each term is separately computed in floating-point and then added
> in floating-point. But at that point in the code the exact values of
> the variables and coefficients are still available and it is easy to
> compute the objective function exactly and convert it to floating-point
> only at the end. For an objective function with multiple nonzero
> terms this can make a significant difference.
Thank you for your suggestion.