SCIP_RowExactSolVals Struct Reference

Detailed Description

collected values of an exact row which depend on the LP solution We store these values in each row to recover the LP solution at start of diving or probing mode, say, without having to resolve the LP. We do not store the dualfarkas value since we expect a node with infeasible LP to be pruned anyway. In this unlikely case, we have to resolve the LP.

Definition at line 114 of file struct_lpexact.h.

#include <struct_lpexact.h>

Data Fields
SCIP_RATIONAL *	dualsol
SCIP_RATIONAL *	activity
unsigned int	basisstatus:2

Field Documentation

dualsol

SCIP_RATIONAL* SCIP_RowExactSolVals::dualsol

dual solution value in LP, is 0 if row is not in LP

Definition at line 116 of file struct_lpexact.h.

Referenced by rowExactRestoreSolVals(), and rowExactStoreSolVals().

activity

SCIP_RATIONAL* SCIP_RowExactSolVals::activity

row activity value in LP, or SCIP_INVALID if not yet calculated

Definition at line 117 of file struct_lpexact.h.

Referenced by rowExactRestoreSolVals(), and rowExactStoreSolVals().

basisstatus

unsigned int SCIP_RowExactSolVals::basisstatus

basis status of row in last LP solution, invalid for non-LP rows

Definition at line 118 of file struct_lpexact.h.

Referenced by rowExactRestoreSolVals(), and rowExactStoreSolVals().