1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 2 /* */ 3 /* This file is part of the program and library */ 4 /* SCIP --- Solving Constraint Integer Programs */ 5 /* */ 6 /* Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB) */ 7 /* */ 8 /* Licensed under the Apache License, Version 2.0 (the "License"); */ 9 /* you may not use this file except in compliance with the License. */ 10 /* You may obtain a copy of the License at */ 11 /* */ 12 /* http://www.apache.org/licenses/LICENSE-2.0 */ 13 /* */ 14 /* Unless required by applicable law or agreed to in writing, software */ 15 /* distributed under the License is distributed on an "AS IS" BASIS, */ 16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ 17 /* See the License for the specific language governing permissions and */ 18 /* limitations under the License. */ 19 /* */ 20 /* You should have received a copy of the Apache-2.0 license */ 21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */ 22 /* */ 23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 24 25 /**@file struct_sepa.h 26 * @ingroup INTERNALAPI 27 * @brief datastructures for separators 28 * @author Tobias Achterberg 29 */ 30 31 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 32 33 #ifndef __SCIP_STRUCT_SEPA_H__ 34 #define __SCIP_STRUCT_SEPA_H__ 35 36 37 #include "scip/def.h" 38 #include "scip/type_clock.h" 39 #include "scip/type_sepa.h" 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 /** separators data */ 46 struct SCIP_Sepa 47 { 48 SCIP_Longint lastsepanode; /**< last (total) node where this separator was called */ 49 SCIP_Longint ncalls; /**< number of times, this separator was called */ 50 SCIP_Longint nrootcalls; /**< number of times, this separator was called at the root */ 51 SCIP_Longint ncutoffs; /**< number of cutoffs found so far by this separator */ 52 SCIP_Longint ncutsfound; /**< number of cutting planes found so far by this separator */ 53 SCIP_Longint ncutsadded; /**< number of cutting planes added to sepastore equal to 54 * the sum of added cuts via pool and direct.*/ 55 SCIP_Longint ncutsaddedviapool; /**< number of cutting planes added from cutpool */ 56 SCIP_Longint ncutsaddeddirect; /**< number of cutting planes added directly */ 57 SCIP_Longint ncutsappliedviapool;/**< number of cutting planes applied to LP via cutpool */ 58 SCIP_Longint ncutsapplieddirect; /**< number of cutting planes applied to LP directly from sepastore */ 59 SCIP_Longint nconssfound; /**< number of additional constraints added by this separator */ 60 SCIP_Longint ndomredsfound; /**< number of domain reductions found so far by this separator */ 61 SCIP_Real maxbounddist; /**< maximal relative distance from current node's dual bound to primal bound compared 62 * to best node's dual bound for applying separation */ 63 char* name; /**< name of separator */ 64 char* desc; /**< description of separator */ 65 SCIP_DECL_SEPACOPY ((*sepacopy)); /**< copy method of separator or NULL if you don't want to copy your plugin into sub-SCIPs */ 66 SCIP_DECL_SEPAFREE ((*sepafree)); /**< destructor of separator */ 67 SCIP_DECL_SEPAINIT ((*sepainit)); /**< initialize separator */ 68 SCIP_DECL_SEPAEXIT ((*sepaexit)); /**< deinitialize separator */ 69 SCIP_DECL_SEPAINITSOL ((*sepainitsol)); /**< solving process initialization method of separator */ 70 SCIP_DECL_SEPAEXITSOL ((*sepaexitsol)); /**< solving process deinitialization method of separator */ 71 SCIP_DECL_SEPAEXECLP ((*sepaexeclp)); /**< LP solution separation method of separator */ 72 SCIP_DECL_SEPAEXECSOL ((*sepaexecsol)); /**< arbitrary primal solution separation method of separator */ 73 SCIP_SEPADATA* sepadata; /**< separators local data */ 74 SCIP_CLOCK* setuptime; /**< time spend for setting up this separator for the next stages */ 75 SCIP_CLOCK* sepaclock; /**< separation time */ 76 int priority; /**< priority of the separator */ 77 int freq; /**< frequency for calling separator */ 78 int ncallsatnode; /**< number of times, this separator was called at the current node */ 79 int ncutsfoundatnode; /**< number of cutting planes found at the current node */ 80 int expbackoff; /**< base for exponential increase of frequency at which the separator is called */ 81 SCIP_Bool usessubscip; /**< does the separator use a secondary SCIP instance? */ 82 SCIP_Bool delay; /**< should separator be delayed, if other separators found cuts? */ 83 SCIP_Bool lpwasdelayed; /**< was the LP separation delayed at the last call? */ 84 SCIP_Bool solwasdelayed; /**< was the solution separation delayed at the last call? */ 85 SCIP_Bool initialized; /**< is separator initialized? */ 86 SCIP_Bool isparentsepa; /**< is separator a parent separator that create cuts of child separators? */ 87 struct SCIP_Sepa* parentsepa; /**< pointer to parent separator or NULL */ 88 }; 89 90 #ifdef __cplusplus 91 } 92 #endif 93 94 #endif 95