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SCIP Doxygen Documentation: examples/Binpacking/src/branch_ryanfoster.c Source File

assert(branchrule !=

);

assert(result !=

);

assert(probdata !=

);

( i = 0; i < nitems; ++i )

assert(nlpcands > 0);

( v = 0; v < nlpcands; ++v )

assert(lpcands[v] !=

);

solval = lpcandsfrac[v];

assert(nconsids > 0);

( i = 0; i < nconsids; ++i )

pairweights[id1][id1] += solval;

( j = i+1; j < nconsids; ++j )

pairweights[id2][id1] += solval;

( i = 0; i < nitems; ++i )

( j = 0; j < i; ++j )

value =

(pairweights[i][j], 1-pairweights[i][j]);

( bestvalue < value )

assert( id1 >= 0 && id1 < nitems);

assert( id2 >= 0 && id2 < nitems);

( i = 0; i < nitems; ++i )

branchruledata =

;

assert(branchrule !=

);

static SCIP_DECL_BRANCHEXECLP(branchExeclpRyanFoster)

SCIP_RETCODE SCIPincludeBranchruleRyanFoster(SCIP *scip)

#define BRANCHRULE_PRIORITY

#define BRANCHRULE_MAXDEPTH

#define BRANCHRULE_MAXBOUNDDIST

Ryan/Foster branching rule.

SCIP_RETCODE SCIPcreateConsSamediff(SCIP *scip, SCIP_CONS **cons, const char *name, int itemid1, int itemid2, CONSTYPE type, SCIP_NODE *node, SCIP_Bool local)

Constraint handler stores the local branching decision data.

#define SCIP_LONGINT_FORMAT

SCIP_PROBDATA * SCIPgetProbData(SCIP *scip)

SCIP_RETCODE SCIPaddConsNode(SCIP *scip, SCIP_NODE *node, SCIP_CONS *cons, SCIP_NODE *validnode)

SCIP_Real SCIPgetLocalTransEstimate(SCIP *scip)

SCIP_RETCODE SCIPsetBranchruleExecLp(SCIP *scip, SCIP_BRANCHRULE *branchrule, SCIP_DECL_BRANCHEXECLP((*branchexeclp)))

SCIP_RETCODE SCIPincludeBranchruleBasic(SCIP *scip, SCIP_BRANCHRULE **branchruleptr, const char *name, const char *desc, int priority, int maxdepth, SCIP_Real maxbounddist, SCIP_BRANCHRULEDATA *branchruledata)

const char * SCIPbranchruleGetName(SCIP_BRANCHRULE *branchrule)

SCIP_RETCODE SCIPgetLPBranchCands(SCIP *scip, SCIP_VAR ***lpcands, SCIP_Real **lpcandssol, SCIP_Real **lpcandsfrac, int *nlpcands, int *npriolpcands, int *nfracimplvars)

SCIP_RETCODE SCIPcreateChild(SCIP *scip, SCIP_NODE **node, SCIP_Real nodeselprio, SCIP_Real estimate)

SCIP_RETCODE SCIPreleaseCons(SCIP *scip, SCIP_CONS **cons)

#define SCIPallocClearBufferArray(scip, ptr, num)

#define SCIPallocBufferArray(scip, ptr, num)

#define SCIPfreeBufferArray(scip, ptr)

SCIP_Longint SCIPgetNNodes(SCIP *scip)

SCIP_Bool SCIPisFeasGE(SCIP *scip, SCIP_Real val1, SCIP_Real val2)

SCIP_Bool SCIPisFeasPositive(SCIP *scip, SCIP_Real val)

int SCIPgetDepth(SCIP *scip)

SCIP_VARDATA * SCIPvarGetData(SCIP_VAR *var)

int * SCIPprobdataGetIds(SCIP_PROBDATA *probdata)

int SCIPprobdataGetNItems(SCIP_PROBDATA *probdata)

Problem data for binpacking problem.

struct SCIP_BranchruleData SCIP_BRANCHRULEDATA

struct SCIP_ProbData SCIP_PROBDATA

enum SCIP_Retcode SCIP_RETCODE

struct SCIP_VarData SCIP_VARDATA

int * SCIPvardataGetConsids(SCIP_VARDATA *vardata)

int SCIPvardataGetNConsids(SCIP_VARDATA *vardata)

Variable data containing the ids of constraints in which the variable appears.

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