1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 2 /* */ 3 /* This file is part of the program and library */ 4 /* SCIP --- Solving Constraint Integer Programs */ 5 /* */ 6 /* Copyright (C) 2002-2021 Konrad-Zuse-Zentrum */ 7 /* fuer Informationstechnik Berlin */ 8 /* */ 9 /* SCIP is distributed under the terms of the ZIB Academic License. */ 10 /* */ 11 /* You should have received a copy of the ZIB Academic License */ 12 /* along with SCIP; see the file COPYING. If not visit scipopt.org. */ 13 /* */ 14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 15 16 /**@file struct_sepa.h 17 * @ingroup INTERNALAPI 18 * @brief datastructures for separators 19 * @author Tobias Achterberg 20 */ 21 22 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 23 24 #ifndef __SCIP_STRUCT_SEPA_H__ 25 #define __SCIP_STRUCT_SEPA_H__ 26 27 28 #include "scip/def.h" 29 #include "scip/type_clock.h" 30 #include "scip/type_sepa.h" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /** separators data */ 37 struct SCIP_Sepa 38 { 39 SCIP_Longint lastsepanode; /**< last (total) node where this separator was called */ 40 SCIP_Longint ncalls; /**< number of times, this separator was called */ 41 SCIP_Longint ncutoffs; /**< number of cutoffs found so far by this separator */ 42 SCIP_Longint ncutsfound; /**< number of cutting planes found so far by this separator */ 43 SCIP_Longint ncutsapplied; /**< number of cutting planes applied to LP */ 44 SCIP_Longint nconssfound; /**< number of additional constraints added by this separator */ 45 SCIP_Longint ndomredsfound; /**< number of domain reductions found so far by this separator */ 46 SCIP_Real maxbounddist; /**< maximal relative distance from current node's dual bound to primal bound compared 47 * to best node's dual bound for applying separation */ 48 char* name; /**< name of separator */ 49 char* desc; /**< description of separator */ 50 SCIP_DECL_SEPACOPY ((*sepacopy)); /**< copy method of separator or NULL if you don't want to copy your plugin into sub-SCIPs */ 51 SCIP_DECL_SEPAFREE ((*sepafree)); /**< destructor of separator */ 52 SCIP_DECL_SEPAINIT ((*sepainit)); /**< initialize separator */ 53 SCIP_DECL_SEPAEXIT ((*sepaexit)); /**< deinitialize separator */ 54 SCIP_DECL_SEPAINITSOL ((*sepainitsol)); /**< solving process initialization method of separator */ 55 SCIP_DECL_SEPAEXITSOL ((*sepaexitsol)); /**< solving process deinitialization method of separator */ 56 SCIP_DECL_SEPAEXECLP ((*sepaexeclp)); /**< LP solution separation method of separator */ 57 SCIP_DECL_SEPAEXECSOL ((*sepaexecsol)); /**< arbitrary primal solution separation method of separator */ 58 SCIP_SEPADATA* sepadata; /**< separators local data */ 59 SCIP_CLOCK* setuptime; /**< time spend for setting up this separator for the next stages */ 60 SCIP_CLOCK* sepaclock; /**< separation time */ 61 int priority; /**< priority of the separator */ 62 int freq; /**< frequency for calling separator */ 63 int ncallsatnode; /**< number of times, this separator was called at the current node */ 64 int ncutsfoundatnode; /**< number of cutting planes found at the current node */ 65 int expbackoff; /**< base for exponential increase of frequency at which the separator is called */ 66 SCIP_Bool usessubscip; /**< does the separator use a secondary SCIP instance? */ 67 SCIP_Bool delay; /**< should separator be delayed, if other separators found cuts? */ 68 SCIP_Bool lpwasdelayed; /**< was the LP separation delayed at the last call? */ 69 SCIP_Bool solwasdelayed; /**< was the solution separation delayed at the last call? */ 70 SCIP_Bool initialized; /**< is separator initialized? */ 71 }; 72 73 #ifdef __cplusplus 74 } 75 #endif 76 77 #endif 78