problem.calcsolinfo

Purpose

Returns the required property of a solution, like maximum infeasibility of a given primal and dual solution.

Synopsis

val = problem.calcsolinfo (solution, dual, property)

Arguments

solution

Array of length problem.attributes.cols that holds the solution.

dual

Array of length problem.attributes.rows that holds the dual solution.

property

xpress.solinfo_absprimalinfeas	absolute primal infeasibility.
xpress.solinfo_relprimalinfeas	relative primal infeasibility.
xpress.solinfo_absdualinfeas	absolute dual infeasibility.
xpress.solinfo_reldualinfeas	relative dual infeasibility.
xpress.solinfo_maxmipfractional	absolute MIP infeasibility (fractionality).

Further information

The calculations are always carried out in the original problem, even if the problem is currently presolved.