Initializing help system before first use

AddCut Method (Int32, Inequality.Definition)

Add a cut at the current node. It is assumed that the left-hand Side ( lhs) is formulated in terms of the original model. So you can use Variable instances to formulate it. When using plain variable indices, be sure these indices are for the original model. The function will automatically Transform (presolve) the cut to the presolved space. If presolving the cut fails then the cut is not added and the reason for failure is returned. Failing to Presolve (and thus adding) a cut is not a problem in every context. That is why this does not raise an exception but instead leaves it to the caller to decide whether this is an error or not.

Namespace:   Optimizer.Objects
Assembly:  xprsdn (in xprsdn.dll) Version: 44.01.01
Syntax
C# 
public int AddCut(
	int cuttype,
	Inequality.Definition cut
)

Parameters

cuttype
Type:  System.Int32
User defined cut type.
cut
Type:  Optimizer.Objects.Inequality.Definition
The inequality to add as cut.

Return Value

Type:  Int32
0 (zero) if the cut was successfully added. Otherwise the status code from presolveRow that indicates why the cut could not be presolved. It is up to the caller to decide whether not being able to presolve the cut is a problem or not.
Remarks
Used in these examples:
  • TSP
See Also
Parent Topic AddCut Method

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