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XPRSstorebounds

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Purpose

Stores bounds for node separation using user separate callback function.

Synopsis

int XPRS_CC XPRSstorebounds(XPRSprob prob, int nbnds, const int mcols[], const char qbtype[], const double dbds[], void **mindex);

Arguments

prob	The current problem.
nbnds	Number of bounds to store.
mcols	Array containing the column indices.
qbtype	Array containing the bounds types: U  indicates an upper bound; L  indicates a lower bound.
dbds	Array containing the bound values.
mindex	Pointer that the user will use to reference the stored bounds for the optimizer in XPRSsetbranchbounds.

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

XPRSsetbranchbounds, XPRSsetcbestimate, XPRSsetcbsepnode.

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