Scippy

SCIP

Solving Constraint Integer Programs

Detailed Description

file reader for variable fixings

Author: Tobias Achterberg

This reader allows to read a file containing fixation values for variables of the current problem. Each line of the file should have format

<variable name> <value to fix>

Note that only a subset of the variables may need to appear in the file. Lines with unknown variable names are ignored. The writing functionality is currently not supported.

Note: The format is equal to the (not xml) solution format of SCIP.

Definition in file reader_fix.c.

#include <assert.h>
#include <string.h>
#include <strings.h>
#include "scip/reader_fix.h"

Go to the source code of this file.

Macros
#define	READER_NAME "fixreader"

#define	READER_DESC "file reader for variable fixings"

#define	READER_EXTENSION "fix"

Functions
static SCIP_RETCODE	readSol (SCIP scip, const char filename)

static	SCIP_DECL_READERCOPY (readerCopyFix)

static	SCIP_DECL_READERREAD (readerReadFix)

SCIP_RETCODE	SCIPincludeReaderFix (SCIP *scip)

Macro Definition Documentation

#define READER_NAME "fixreader"

Definition at line 44 of file reader_fix.c.

Referenced by SCIP_DECL_READERCOPY(), SCIP_DECL_READERREAD(), and SCIPincludeReaderFix().

#define READER_DESC "file reader for variable fixings"

Definition at line 45 of file reader_fix.c.

Referenced by SCIPincludeReaderFix().

#define READER_EXTENSION "fix"

Definition at line 46 of file reader_fix.c.

Referenced by SCIPincludeReaderFix().

Function Documentation

static SCIP_RETCODE readSol	(	SCIP *	scip,
		const char *	filename
	)

static

reads the given solution file

Parameters

scip	SCIP data structure
filename	name of the input file

Definition at line 55 of file reader_fix.c.

References FALSE, NULL, SCIP_Bool, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_NOFILE, SCIP_OKAY, SCIP_READERROR, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPerrorMessage, SCIPfclose(), SCIPfeof(), SCIPfgets(), SCIPfindVar(), SCIPfixVar(), SCIPfopen(), SCIPinfinity(), SCIPprintSysError(), SCIPvarGetLbGlobal(), SCIPvarGetUbGlobal(), SCIPverbMessage(), SCIPwarningMessage(), and TRUE.

Referenced by SCIP_DECL_READERREAD().

static SCIP_DECL_READERCOPY ( readerCopyFix )

static

copy method for reader plugins (called when SCIP copies plugins)

Definition at line 176 of file reader_fix.c.

References NULL, READER_NAME, SCIP_CALL, SCIP_OKAY, SCIPincludeReaderFix(), and SCIPreaderGetName().

static SCIP_DECL_READERREAD ( readerReadFix )

static

problem reading method of reader

Definition at line 190 of file reader_fix.c.

References NULL, READER_NAME, readSol(), SCIP_CALL, SCIP_DIDNOTRUN, SCIP_OKAY, SCIP_READERROR, SCIP_STAGE_PROBLEM, SCIP_SUCCESS, SCIPerrorMessage, SCIPfreeTransform(), SCIPgetStage(), and SCIPreaderGetName().

SCIP_RETCODE SCIPincludeReaderFix ( SCIP * scip )

includes the fix file reader in SCIP

Parameters

scip	SCIP data structure

Definition at line 220 of file reader_fix.c.

References NULL, READER_DESC, READER_EXTENSION, READER_NAME, SCIP_CALL, SCIP_OKAY, SCIPincludeReaderBasic(), SCIPsetReaderCopy(), and SCIPsetReaderRead().

Referenced by SCIP_DECL_READERCOPY(), and SCIPincludeDefaultPlugins().