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 reader_mps.h 26 * @ingroup FILEREADERS 27 * @brief (extended) MPS file reader 28 * @author Thorsten Koch 29 * @author Tobias Achterberg 30 * 31 * This reader allows to parse and write MPS files with linear and quadratic constraints and objective, 32 * special ordered sets of type 1 and 2, indicators on linear constraints, and semicontinuous variables. 33 * For writing, linear (general and specialized), indicator, quadratic, second order cone, and 34 * special ordered set constraints are supported. 35 * 36 * See http://en.wikipedia.org/wiki/MPS_%28format%29 for a description. 37 */ 38 39 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 40 41 #ifndef __SCIP_READER_MPS_H__ 42 #define __SCIP_READER_MPS_H__ 43 44 #include "scip/def.h" 45 #include "scip/type_cons.h" 46 #include "scip/type_prob.h" 47 #include "scip/type_reader.h" 48 #include "scip/type_result.h" 49 #include "scip/type_retcode.h" 50 #include "scip/type_scip.h" 51 #include "scip/type_var.h" 52 53 #ifdef __cplusplus 54 extern "C" { 55 #endif 56 57 /** includes the mps file reader into SCIP 58 * 59 * @ingroup FileReaderIncludes 60 */ 61 SCIP_EXPORT 62 SCIP_RETCODE SCIPincludeReaderMps( 63 SCIP* scip /**< SCIP data structure */ 64 ); 65 66 /**@addtogroup FILEREADERS 67 * 68 * @{ 69 */ 70 71 /** reads problem from file */ 72 SCIP_EXPORT 73 SCIP_RETCODE SCIPreadMps( 74 SCIP* scip, /**< SCIP data structure */ 75 SCIP_READER* reader, /**< the file reader itself */ 76 const char* filename, /**< full path and name of file to read, or NULL if stdin should be used */ 77 SCIP_RESULT* result, /**< pointer to store the result of the file reading call */ 78 const char*** varnames, /**< storage for the variable names, or NULL */ 79 const char*** consnames, /**< storage for the constraint names, or NULL */ 80 int* varnamessize, /**< the size of the variable names storage, or NULL */ 81 int* consnamessize, /**< the size of the constraint names storage, or NULL */ 82 int* nvarnames, /**< the number of stored variable names, or NULL */ 83 int* nconsnames /**< the number of stored constraint names, or NULL */ 84 ); 85 86 /** writes problem to file */ 87 SCIP_EXPORT 88 SCIP_RETCODE SCIPwriteMps( 89 SCIP* scip, /**< SCIP data structure */ 90 SCIP_READER* reader, /**< the file reader itself */ 91 FILE* file, /**< output file, or NULL if standard output should be used */ 92 const char* name, /**< problem name */ 93 SCIP_Bool transformed, /**< TRUE iff problem is the transformed problem */ 94 SCIP_OBJSENSE objsense, /**< objective sense */ 95 SCIP_Real objscale, /**< scalar applied to objective function; external objective value is 96 * extobj = objsense * objscale * (intobj + objoffset) */ 97 SCIP_Real objoffset, /**< objective offset from bound shifting and fixing */ 98 SCIP_VAR** vars, /**< array with active variables ordered binary, integer, implicit, continuous */ 99 int nvars, /**< number of active variables in the problem */ 100 int nbinvars, /**< number of binary variables */ 101 int nintvars, /**< number of general integer variables */ 102 int nimplvars, /**< number of implicit integer variables */ 103 int ncontvars, /**< number of continuous variables */ 104 SCIP_VAR** fixedvars, /**< array with fixed and aggregated variables */ 105 int nfixedvars, /**< number of fixed and aggregated variables in the problem */ 106 SCIP_CONS** conss, /**< array with constraints of the problem */ 107 int nconss, /**< number of constraints in the problem */ 108 SCIP_RESULT* result /**< pointer to store the result of the file writing call */ 109 ); 110 111 /** @} */ 112 113 #ifdef __cplusplus 114 } 115 #endif 116 117 #endif 118