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getprobstat

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Purpose

Get the Optimizer problem status.

Synopsis

function getprobstat:integer

Return value

Status of the problem currently held in the Optimizer:

XPRS_OPT	Solved to optimality
XPRS_UNF	Unfinished
XPRS_INF	Infeasible
XPRS_UNB	Unbounded
XPRS_OTH	Unsolved or objective worse than cutoff

Example

The following procedure displays the current problem status:

procedure print_status
 declarations
  status: string
 end-declarations

 case getprobstat of
  XPRS_OPT: status:="Optimum found"
  XPRS_UNF: status:="Unfinished"
  XPRS_INF: status:="Infeasible"
  XPRS_UNB: status:="Unbounded"
  XPRS_OTH: status:="Failed"
  else status:="???"
 end-case

 writeln("Problem status: ", status)
end-procedure

Further information

More detailed information than what is provided by this function can be obtained with function getparam, retrieving the problem attributes XPRS_presolvestate, XPRS_lpstatus, and XPRS_mipstatus (see the Xpress-Optimizer Reference Manual).

Related topics

getparam.

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