XPRSiisnext
Purpose
Continues the search for further Irreducible Infeasible Sets (IIS), or calls
XPRSiisfirst (
IIS) if no IIS has been identified yet.
Synopsis
int XPRS_CC XPRSiisnext(XPRSprob prob, int *p_status);
Arguments
|
prob
|
The current problem.
|
||||||
|
p_status
|
The status after the search:
|
Example
This looks for a further IIS.
XPRSiisnext(prob,&status);
Further information
1. Returning multiple IISs is supported only for linear problems.
3. A model may have several infeasibilities. Repairing a single IIS may not make the model feasible. For this reason the Optimizer attempts to find an IIS for each of the infeasibilities in a model. You may call the XPRSiisnext function repeatedly, or use the
XPRSiisall (
IIS
-a) function to retrieve all IIS at once.
4. This function is not affected by the control
MAXIIS.
5. If the problem has been modified since the last call to
XPRSiisfirst or
XPRSiisnext, the generation process has to be started from scratch.
Related topics
XPRSgetiisdata,
XPRSiisall,
XPRSiisclear,
XPRSiisfirst,
XPRSiisisolations,
XPRSiisstatus,
XPRSiiswrite,
IIS.
© 2001-2023 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation ("FICO"). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.