Scippy

SCIP

Solving Constraint Integer Programs

Macros | Functions
heur_trivial.c File Reference

Detailed Description

trivial primal heuristic

Author
Timo Berthold

Definition in file heur_trivial.c.

#include <assert.h>
#include <string.h>
#include "scip/heur_trivial.h"

Go to the source code of this file.

Macros

#define HEUR_NAME   "trivial"
 
#define HEUR_DESC   "start heuristic which tries some trivial solutions"
 
#define HEUR_DISPCHAR   't'
 
#define HEUR_PRIORITY   10000
 
#define HEUR_FREQ   0
 
#define HEUR_FREQOFS   0
 
#define HEUR_MAXDEPTH   -1
 
#define HEUR_TIMING   SCIP_HEURTIMING_BEFOREPRESOL | SCIP_HEURTIMING_BEFORENODE
 
#define HEUR_USESSUBSCIP   FALSE
 

Functions

static SCIP_DECL_HEURCOPY (heurCopyTrivial)
 
static SCIP_DECL_HEUREXEC (heurExecTrivial)
 
SCIP_RETCODE SCIPincludeHeurTrivial (SCIP *scip)
 

Macro Definition Documentation

#define HEUR_NAME   "trivial"

Definition at line 29 of file heur_trivial.c.

Referenced by SCIP_DECL_HEURCOPY(), and SCIPincludeHeurTrivial().

#define HEUR_DESC   "start heuristic which tries some trivial solutions"

Definition at line 30 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

#define HEUR_DISPCHAR   't'

Definition at line 31 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

#define HEUR_PRIORITY   10000

Definition at line 32 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

#define HEUR_FREQ   0

Definition at line 33 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

#define HEUR_FREQOFS   0

Definition at line 34 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

#define HEUR_MAXDEPTH   -1

Definition at line 35 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

#define HEUR_TIMING   SCIP_HEURTIMING_BEFOREPRESOL | SCIP_HEURTIMING_BEFORENODE

Definition at line 36 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

#define HEUR_USESSUBSCIP   FALSE

does the heuristic use a secondary SCIP instance?

Definition at line 37 of file heur_trivial.c.

Referenced by SCIPincludeHeurTrivial().

Function Documentation

static SCIP_DECL_HEURCOPY ( heurCopyTrivial  )
static

copy method for primal heuristic plugins (called when SCIP copies plugins)

Definition at line 45 of file heur_trivial.c.

References HEUR_NAME, NULL, SCIP_CALL, SCIP_OKAY, SCIPheurGetName(), and SCIPincludeHeurTrivial().

static SCIP_DECL_HEUREXEC ( heurExecTrivial  )
static

execution method of primal heuristic

Definition at line 60 of file heur_trivial.c.

References FALSE, MAX, MIN, NULL, SCIP_Bool, SCIP_CALL, SCIP_DIDNOTFIND, SCIP_DIDNOTRUN, SCIP_FOUNDSOL, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_CONTINUOUS, SCIPceil(), SCIPcreateSol(), SCIPdebug, SCIPdebugMessage, SCIPfeastol(), SCIPfloor(), SCIPfreeSol(), SCIPgetNRuns(), SCIPgetVarsData(), SCIPinfinity(), SCIPisFeasLE(), SCIPisGT(), SCIPisInfinity(), SCIPisLE(), SCIPprintSol(), SCIPsetSolVal(), SCIPtrySol(), SCIPvarGetLbLocal(), SCIPvarGetNLocksDown(), SCIPvarGetNLocksUp(), SCIPvarGetType(), SCIPvarGetUbLocal(), and TRUE.

SCIP_RETCODE SCIPincludeHeurTrivial ( SCIP *  scip)

creates the trivial primal heuristic and includes it in SCIP

Parameters
scipSCIP data structure

Definition at line 233 of file heur_trivial.c.

References HEUR_DESC, HEUR_DISPCHAR, HEUR_FREQ, HEUR_FREQOFS, HEUR_MAXDEPTH, HEUR_NAME, HEUR_PRIORITY, HEUR_TIMING, HEUR_USESSUBSCIP, NULL, SCIP_CALL, SCIP_OKAY, SCIPincludeHeurBasic(), and SCIPsetHeurCopy().

Referenced by SCIP_DECL_HEURCOPY(), and SCIPincludeDefaultPlugins().