Initializing help system before first use

setcomplementary

Purpose
Set two variables as being complementary.
Synopsis
procedure setcomplementary(var1:mpvar, var2:mpvar)
Arguments
var1 
The first variable of the variable pair to be set as complementing
var2 
The first variable of the variable pair to be set as complementing
Further information
A complementing variable pair implements the constraint that is equivalent with the product of the variables being zero. However, the solvers may be able to treat such constraints in a special, more efficient ways, which may make a difference if the complementarity constraints are the problematic part of the model. Note that Knitro only allows non-overlapping complementary variables, and in the presence of overlaps Xpress will default to use SLP. Complementary variables must have a lower bound of zero.
Related topics
setinitval, setinitsb, setdetrow, setenforcedctr.
Module
mmxnlp

Parent Topic Procedures and functions

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