reader_lop.c File Reference

Detailed Description

linear ordering file reader

Author

Marc Pfetsch

This file implements the reader/parser used to read linear ordering problems. For more details see How to add file readers. The data should be given in LOLIB format, see LOLIB.

Definition in file reader_lop.c.

#include <assert.h>
#include <string.h>
#include <ctype.h>
#include "cons_lop.h"
#include "reader_lop.h"
#include <scip/pub_fileio.h>

Go to the source code of this file.

Macros
#define	READER_NAME   "lopreader"
#define	READER_DESC   "file reader for linear ordering problems"
#define	READER_EXTENSION   "lop"
#define	READER_STRLEN   65536

Functions
static SCIP_RETCODE	getNextNumber (SCIP_FILE *file, char *buffer, char **s, SCIP_Real *value)
static SCIP_RETCODE	LOPreadFile (SCIP *scip, const char *filename, int *n, SCIP_Real ***W)
static SCIP_RETCODE	getProblemName (const char *filename, char *probname, int maxSize)
Callback methods
static	SCIP_DECL_READERREAD (LOPreaderRead)
Interface methods
SCIP_RETCODE	SCIPincludeReaderLOP (SCIP *scip)

Macro Definition Documentation

READER_NAME

#define READER_NAME   "lopreader"

Definition at line 43 of file reader_lop.c.

Referenced by SCIPincludeReaderLOP().

READER_DESC

#define READER_DESC   "file reader for linear ordering problems"

Definition at line 44 of file reader_lop.c.

Referenced by SCIPincludeReaderLOP().

READER_EXTENSION

#define READER_EXTENSION   "lop"

Definition at line 45 of file reader_lop.c.

Referenced by SCIPincludeReaderLOP().

READER_STRLEN

#define READER_STRLEN   65536

Definition at line 47 of file reader_lop.c.

Referenced by getNextNumber(), and LOPreadFile().

Function Documentation

getNextNumber()

static SCIP_RETCODE getNextNumber ( SCIP_FILE *  file, char *  buffer, char **  s, SCIP_Real *  value  )

static

Get next number from file

Parameters

file	file to read from
buffer	buffer to store lines in
s	pointer to string pointer
value	pointer to store the read value

Definition at line 53 of file reader_lop.c.

References NULL, READER_STRLEN, SCIP_INVALID, SCIP_OKAY, SCIP_READERROR, SCIPerrorMessage, and SCIPfgets().

Referenced by LOPreadFile().

LOPreadFile()

static SCIP_RETCODE LOPreadFile ( SCIP *  scip, const char *  filename, int *  n, SCIP_Real ***  W  )

static

read weight matrix from file (in LOLIB format)

Format: comment line n = # of elements weight matrix (n times n double matrix)

Parameters

scip	SCIP data structure
filename	name of file to read
n	pointer to store the number of elements on exit
W	pointer to store the weight matrix on exit

Definition at line 115 of file reader_lop.c.

References getNextNumber(), NULL, READER_STRLEN, SCIP_CALL, SCIP_INVALID, SCIP_NOFILE, SCIP_OKAY, SCIP_READERROR, SCIP_Real, SCIPallocBlockMemoryArray, SCIPerrorMessage, SCIPfclose(), SCIPfeof(), SCIPfgets(), SCIPfopen(), and SCIPprintSysError().

Referenced by SCIP_DECL_READERREAD().

getProblemName()

static SCIP_RETCODE getProblemName ( const char *  filename, char *  probname, int  maxSize  )

static

get problem name

Returns NULL on error

Parameters

filename	input filename
probname	output problemname
maxSize	maximum size of probname

Definition at line 202 of file reader_lop.c.

References SCIP_ERROR, and SCIP_OKAY.

Referenced by SCIP_DECL_READERREAD().

SCIP_DECL_READERREAD()

static SCIP_DECL_READERREAD ( LOPreaderRead  )

static

problem reading method of reader

Definition at line 254 of file reader_lop.c.

References FALSE, getProblemName(), LOPreadFile(), NULL, SCIP_CALL, SCIP_DIDNOTRUN, SCIP_MAXSTRLEN, SCIP_OBJSENSE_MAXIMIZE, SCIP_OKAY, SCIP_Real, SCIP_SUCCESS, SCIP_VARTYPE_BINARY, SCIPaddCons(), SCIPaddVar(), SCIPallocBlockMemoryArray, SCIPcreateConsLOP(), SCIPcreateProbBasic(), SCIPcreateVar(), SCIPfreeBlockMemoryArray, SCIPinfoMessage(), SCIPprintOrigProblem(), SCIPreleaseCons(), SCIPreleaseVar(), SCIPsetObjsense(), SCIPsnprintf(), and TRUE.

SCIPincludeReaderLOP()

SCIP_RETCODE SCIPincludeReaderLOP

(

SCIP *

scip

)

includes the linear ordering file reader in SCIP

Parameters

scip	SCIP data structure

Definition at line 348 of file reader_lop.c.

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

Referenced by main().