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XPRSsetbranchbounds

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Purpose

Specifies the bounds previously stored using XPRSstorebounds that are to be applied in order to branch on a user global entity. This routine can only be called from the user separate callback function, XPRSsetcbsepnode.

Synopsis

int XPRS_CC XPRSsetbranchbounds(XPRSprob prob, const void *mindex);

Arguments

prob	The current problem.
mindex	Pointer previously defined in a call to XPRSstorebounds that references the stored bounds to be used to separate the node.

Example

This example defines a user separate callback function for the global search:

XPRSsetcbsepnode(prob,nodeSep,void);

where the function nodeSep is defined as follows:

int nodeSep(XPRSprob prob, void *obj int ibr, int iglsel, 
            int ifup, double curval)
{
  void *index;
  double dbd;

  if( ifup )
  {   
    dbd = ceil(curval);
    XPRSstorebounds(prob, 1, &iglsel, "L", &dbd, &index);
  }
  else
  {
    dbd = floor(curval);
    XPRSstorebounds(prob, 1, &iglsel, "U", &dbd, &index);
  }
  XPRSsetbranchbounds(prob, index);
  return 0;
}

Related topics

XPRSloadcuts, XPRSsetcbestimate, XPRSsetcbsepnode, XPRSstorebounds, Working with the Cut Manager.

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