38d596cb81
* Added Jamfile by James Kim and Christof Lutteroth. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23888 a95241bf-73f2-0310-859d-f6bbb57e9c96
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
#ifndef HEADER_lp_mipbb
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#define HEADER_lp_mipbb
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#include "lp_types.h"
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#include "lp_utils.h"
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/* Bounds storage for B&B routines */
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typedef struct _BBrec
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{
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struct _BBrec *parent;
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struct _BBrec *child;
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lprec *lp;
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int varno;
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int vartype;
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int lastvarcus; /* Count of non-int variables of the previous branch */
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int lastrcf;
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int nodesleft;
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int nodessolved;
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int nodestatus;
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REAL noderesult;
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REAL lastsolution; /* Optimal solution of the previous branch */
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REAL sc_bound;
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REAL *upbo, *lowbo;
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REAL UPbound, LObound;
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int UBtrack, LBtrack; /* Signals that incoming bounds were changed */
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MYBOOL contentmode; /* Flag indicating if we "own" the bound vectors */
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MYBOOL sc_canset;
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MYBOOL isSOS;
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MYBOOL isGUB;
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int *varmanaged; /* Extended list of variables managed by this B&B level */
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MYBOOL isfloor; /* State variable indicating the active B&B bound */
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MYBOOL UBzerobased; /* State variable indicating if bounds have been rebased */
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} BBrec;
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#ifdef __cplusplus
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extern "C" {
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#endif
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STATIC BBrec *create_BB(lprec *lp, BBrec *parentBB, MYBOOL dofullcopy);
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STATIC BBrec *push_BB(lprec *lp, BBrec *parentBB, int varno, int vartype, int varcus);
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STATIC MYBOOL initbranches_BB(BBrec *BB);
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STATIC MYBOOL fillbranches_BB(BBrec *BB);
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STATIC MYBOOL nextbranch_BB(BBrec *BB);
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STATIC MYBOOL strongbranch_BB(lprec *lp, BBrec *BB, int varno, int vartype, int varcus);
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STATIC MYBOOL initcuts_BB(lprec *lp);
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STATIC int updatecuts_BB(lprec *lp);
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STATIC MYBOOL freecuts_BB(lprec *lp);
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STATIC BBrec *findself_BB(BBrec *BB);
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STATIC int solve_LP(lprec *lp, BBrec *BB);
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STATIC int rcfbound_BB(BBrec *BB, int varno, MYBOOL isINT, REAL *newbound, MYBOOL *isfeasible);
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STATIC MYBOOL findnode_BB(BBrec *BB, int *varno, int *vartype, int *varcus);
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STATIC int solve_BB(BBrec *BB);
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STATIC MYBOOL free_BB(BBrec **BB);
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STATIC BBrec *pop_BB(BBrec *BB);
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STATIC int run_BB(lprec *lp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HEADER_lp_mipbb */
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