reader_fix.c File Reference

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 "scip/pub_fileio.h"
#include "scip/pub_message.h"
#include "scip/pub_misc.h"
#include "scip/pub_reader.h"
#include "scip/pub_var.h"
#include "scip/reader_fix.h"
#include "scip/scip_general.h"
#include "scip/scip_message.h"
#include "scip/scip_numerics.h"
#include "scip/scip_prob.h"
#include "scip/scip_reader.h"
#include "scip/scip_solve.h"
#include "scip/scip_var.h"
#include <string.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

READER_NAME

#define READER_NAME   "fixreader"

Definition at line 60 of file reader_fix.c.

READER_DESC

#define READER_DESC   "file reader for variable fixings"

Definition at line 61 of file reader_fix.c.

READER_EXTENSION

#define READER_EXTENSION   "fix"

Definition at line 62 of file reader_fix.c.

Function Documentation

readSol()

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 71 of file reader_fix.c.

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

Referenced by SCIP_DECL_READERREAD().

SCIP_DECL_READERCOPY()

SCIP_DECL_READERCOPY ( readerCopyFix )

static

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

Definition at line 203 of file reader_fix.c.

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

SCIP_DECL_READERREAD()

SCIP_DECL_READERREAD ( readerReadFix )

static

problem reading method of reader

Definition at line 217 of file reader_fix.c.

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