Scippy

SCIP

Solving Constraint Integer Programs

scip_randnumgen.h
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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) 2002-2022 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 scip_randnumgen.h
17  * @ingroup PUBLICCOREAPI
18  * @brief public methods for random numbers
19  * @author Tobias Achterberg
20  * @author Timo Berthold
21  * @author Thorsten Koch
22  * @author Alexander Martin
23  * @author Marc Pfetsch
24  * @author Kati Wolter
25  * @author Gregor Hendel
26  * @author Leona Gottwald
27  */
28 
29 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
30 
31 #ifndef __SCIP_SCIP_RANDNUMGEN_H__
32 #define __SCIP_SCIP_RANDNUMGEN_H__
33 
34 
35 #include "scip/def.h"
36 #include "scip/type_misc.h"
37 #include "scip/type_retcode.h"
38 #include "scip/type_scip.h"
39 
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43 
44 /**@addtogroup RandomNumbers
45  *
46  * @{
47  */
48 
49 /** creates and initializes a random number generator
50  *
51  * @note The initial seed is changed using SCIPinitializeRandomSeed()
52  */
53 SCIP_EXPORT
55  SCIP* scip, /**< SCIP data structure */
56  SCIP_RANDNUMGEN** randnumgen, /**< random number generator */
57  unsigned int initialseed, /**< initial random seed */
58  SCIP_Bool useglobalseed /**< should SCIP's global seed be used to initialise the supplied seed? */
59  );
60 
61 /** frees a random number generator */
62 SCIP_EXPORT
63 void SCIPfreeRandom(
64  SCIP* scip, /**< SCIP data structure */
65  SCIP_RANDNUMGEN** randnumgen /**< random number generator */
66  );
67 
68 /** initializes a random number generator with a given seed
69  *
70  * @note The seed is changed using SCIPinitializeRandomSeed()
71  */
72 SCIP_EXPORT
74  SCIP* scip, /**< SCIP data structure */
75  SCIP_RANDNUMGEN* randnumgen, /**< random number generator */
76  unsigned int seed /**< new random seed */
77  );
78 
79 
80 /** modifies an initial seed value with the global shift of random seeds */
81 SCIP_EXPORT
82 unsigned int SCIPinitializeRandomSeed(
83  SCIP* scip, /**< SCIP data structure */
84  unsigned int initialseedvalue /**< initial seed value to be modified */
85  );
86 
87 /**@} */
88 
89 #ifdef __cplusplus
90 }
91 #endif
92 
93 #endif
void SCIPfreeRandom(SCIP *scip, SCIP_RANDNUMGEN **randnumgen)
type definitions for miscellaneous datastructures
void SCIPsetRandomSeed(SCIP *scip, SCIP_RANDNUMGEN *randnumgen, unsigned int seed)
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:54
type definitions for return codes for SCIP methods
type definitions for SCIP&#39;s main datastructure
SCIP_RETCODE SCIPcreateRandom(SCIP *scip, SCIP_RANDNUMGEN **randnumgen, unsigned int initialseed, SCIP_Bool useglobalseed)
#define SCIP_Bool
Definition: def.h:84
unsigned int SCIPinitializeRandomSeed(SCIP *scip, unsigned int initialseedvalue)
common defines and data types used in all packages of SCIP