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 nlpi_ipopt_dummy.c 26 * @ingroup DEFPLUGINS_NLPI 27 * @brief dummy Ipopt NLP interface for the case that Ipopt is not available 28 * @author Stefan Vigerske 29 * @author Benjamin Müller 30 * 31 * This code has been separated from nlpi_ipopt.cpp, so the SCIP build system recognizes it as pure C code, 32 * thus the linker does not need to be changed to C++. 33 */ 34 35 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 36 37 #include "scip/pub_message.h" 38 #include "scip/nlpi_ipopt.h" 39 #include "blockmemshell/memory.h" 40 41 /** create solver interface for Ipopt solver and includes it into SCIP, if Ipopt is available */ /*lint -e{715}*/ 42 SCIP_RETCODE SCIPincludeNlpSolverIpopt( 43 SCIP* scip /**< SCIP data structure */ 44 ) 45 { 46 return SCIP_OKAY; 47 } /*lint !e715*/ 48 49 /** gets string that identifies Ipopt (version number) */ 50 const char* SCIPgetSolverNameIpopt(void) 51 { 52 return ""; 53 } 54 55 /** gets string that describes Ipopt */ 56 const char* SCIPgetSolverDescIpopt(void) 57 { 58 return ""; 59 } 60 61 /** returns whether Ipopt is available, i.e., whether it has been linked in */ 62 SCIP_Bool SCIPisIpoptAvailableIpopt(void) 63 { 64 return FALSE; 65 } 66 67 /** gives a pointer to the NLPIORACLE object stored in Ipopt-NLPI's NLPI problem data structure */ /*lint -e715*/ 68 void* SCIPgetNlpiOracleIpopt( 69 SCIP_NLPIPROBLEM* nlpiproblem /**< NLP problem of Ipopt-NLPI */ 70 ) 71 { 72 SCIPerrorMessage("Ipopt not available!\n"); 73 SCIPABORT(); 74 return NULL; /*lint !e527*/ 75 } /*lint !e715*/ 76 77 SCIP_RETCODE SCIPcallLapackDsyevIpopt( 78 SCIP_Bool computeeigenvectors,/**< should also eigenvectors should be computed ? */ 79 int N, /**< dimension */ 80 SCIP_Real* a, /**< matrix data on input (size N*N); eigenvectors on output if computeeigenvectors == TRUE */ 81 SCIP_Real* w /**< buffer to store eigenvalues (size N) */ 82 ) 83 { 84 SCIPerrorMessage("Ipopt not available, cannot use it's Lapack link!\n"); 85 return SCIP_ERROR; 86 } /*lint !e715*/ 87 88 SCIP_RETCODE SCIPsolveLinearEquationsIpopt( 89 int N, /**< dimension */ 90 SCIP_Real* A, /**< matrix data on input (size N*N); filled column-wise */ 91 SCIP_Real* b, /**< right hand side vector (size N) */ 92 SCIP_Real* x, /**< buffer to store solution (size N) */ 93 SCIP_Bool* success /**< pointer to store if the solving routine was successful */ 94 ) 95 { 96 SCIPerrorMessage("Ipopt not available, cannot use it's Lapack link!\n"); 97 return SCIP_ERROR; 98 } /*lint !e715*/ 99