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XPRSstorebounds

XPRSstorebounds

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: 
XPRSaddcbsepnode(prob,nodeSep,void,0);
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, XPRSaddcbestimate, XPRSaddcbsepnode.

Parent Topic Console and Library Functions

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