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compute_symmetry_none.cpp
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1/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2/* */
3/* This file is part of the program and library */
4/* SCIP --- Solving Constraint Integer Programs */
5/* */
6/* Copyright (c) 2002-2025 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 compute_symmetry_none.cpp
26 * @brief interface for no symmetry computations
27 * @author Marc Pfetsch
28 */
29
30/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
31
32#include "compute_symmetry.h"
33
34/** return whether symmetry can be computed */
36{
37 return FALSE;
38}
39
40/** return name of external program used to compute generators */
41const char* SYMsymmetryGetName(void)
42{
43 return "none";
44}
45
46/** return description of external program used to compute generators */
47const char* SYMsymmetryGetDesc(void)
48{
49 return "";
50}
51
52/** return name of additional external program used for computing symmetries */
53const char* SYMsymmetryGetAddName(void)
54{
55 return "";
56}
57
58/** return description of additional external program used to compute symmetries */
59const char* SYMsymmetryGetAddDesc(void)
60{
61 return "";
62}
63
64/** compute generators of symmetry group */ /*lint -e{715}*/
66 SCIP* scip, /**< SCIP pointer */
67 int maxgenerators, /**< maximal number of generators constructed (= 0 if unlimited) */
68 SYM_GRAPH* graph, /**< symmetry detection graph */
69 int* nperms, /**< pointer to store number of permutations */
70 int* nmaxperms, /**< pointer to store maximal number of permutations (needed for freeing storage) */
71 int*** perms, /**< pointer to store permutation generators as (nperms x npermvars) matrix */
72 SCIP_Real* log10groupsize, /**< pointer to store size of group */
73 SCIP_Real* symcodetime /**< pointer to store the time for symmetry code */
74 )
75{ /*lint --e{715}*/
76 assert( scip != NULL );
77 assert( graph != NULL );
78 assert( nperms != NULL );
79 assert( nmaxperms != NULL );
80 assert( perms != NULL );
81 assert( log10groupsize != NULL );
82 assert( symcodetime != NULL );
83
84 /* init */
85 *nperms = 0;
86 *nmaxperms = 0;
87 *perms = NULL;
88 *log10groupsize = 0;
89 *symcodetime = 0.0;
90
91 return SCIP_OKAY;
92}
93
94/** returns whether two given graphs are identical */
96 SCIP* scip, /**< SCIP pointer */
97 SYM_SYMTYPE symtype, /**< type of symmetries to be checked */
98 SYM_GRAPH* G1, /**< first graph */
99 SYM_GRAPH* G2 /**< second graph */
100 )
101{
102 return FALSE;
103}
interface for symmetry computations
SCIP_Bool SYMcheckGraphsAreIdentical(SCIP *scip, SYM_SYMTYPE symtype, SYM_GRAPH *G1, SYM_GRAPH *G2)
const char * SYMsymmetryGetName(void)
const char * SYMsymmetryGetAddName(void)
SCIP_RETCODE SYMcomputeSymmetryGenerators(SCIP *scip, int maxgenerators, SYM_GRAPH *graph, int *nperms, int *nmaxperms, int ***perms, SCIP_Real *log10groupsize, SCIP_Real *symcodetime)
SCIP_Bool SYMcanComputeSymmetry(void)
const char * SYMsymmetryGetDesc(void)
const char * SYMsymmetryGetAddDesc(void)
#define NULL
Definition def.h:266
#define SCIP_Bool
Definition def.h:91
#define SCIP_Real
Definition def.h:172
#define FALSE
Definition def.h:94
return SCIP_OKAY
assert(minobj< SCIPgetCutoffbound(scip))
struct SYM_Graph SYM_GRAPH
Definition type_cons.h:68
enum SCIP_Retcode SCIP_RETCODE
struct Scip SCIP
Definition type_scip.h:39
enum SYM_Symtype SYM_SYMTYPE