Detailed Description

(extended) MPS file reader

Author: Thorsten Koch; Tobias Achterberg; Marc Pfetsch; Stefan Heinz; Stefan Vigerske; Michael Winkler

This reader/writer handles MPS files in extended MPS format, as it is used by CPLEX. In the extended format the limits on variable name lengths and coefficients are considerably relaxed. The columns in the format are then separated by whitespaces.

Definition in file reader_mps.c.

#include "blockmemshell/memory.h"
#include <ctype.h>
#include "scip/cons_and.h"
#include "scip/cons_bounddisjunction.h"
#include "scip/cons_nonlinear.h"
#include "scip/cons_indicator.h"
#include "scip/cons_knapsack.h"
#include "scip/cons_linear.h"
#include "scip/cons_logicor.h"
#include "scip/cons_setppc.h"
#include "scip/cons_sos1.h"
#include "scip/cons_sos2.h"
#include "scip/cons_varbound.h"
#include "scip/pub_cons.h"
#include "scip/pub_fileio.h"
#include "scip/pub_message.h"
#include "scip/pub_misc.h"
#include "scip/pub_misc_sort.h"
#include "scip/pub_reader.h"
#include "scip/pub_var.h"
#include "scip/reader_mps.h"
#include "scip/scip_cons.h"
#include "scip/scip_mem.h"
#include "scip/scip_message.h"
#include "scip/scip_numerics.h"
#include "scip/scip_param.h"
#include "scip/scip_prob.h"
#include "scip/scip_reader.h"
#include "scip/scip_solvingstats.h"
#include "scip/scip_var.h"
#include <stdlib.h>
#include <string.h>

Go to the source code of this file.

Data Structures
struct	ConsNameFreq

Macros
#define	READER_NAME "mpsreader"

#define	READER_DESC "file reader for MIQPs in IBM's Mathematical Programming System format"

#define	READER_EXTENSION "mps"

#define	DEFAULT_LINEARIZE_ANDS TRUE

#define	DEFAULT_AGGRLINEARIZATION_ANDS TRUE

#define	MPS_MAX_LINELEN 1024

#define	MPS_MAX_NAMELEN 256

#define	MPS_MAX_VALUELEN 26

#define	MPS_MAX_FIELDLEN 20

#define	PATCH_CHAR '_'

#define	BLANK ' '

Typedefs
typedef enum MpsSection	MPSSECTION

typedef struct MpsInput	MPSINPUT

typedef struct SparseMatrix	SPARSEMATRIX

typedef struct ConsNameFreq	CONSNAMEFREQ

Enumerations
enum	MpsSection { MPS_NAME, MPS_OBJSEN, MPS_OBJNAME, MPS_ROWS, MPS_USERCUTS, MPS_LAZYCONS, MPS_COLUMNS, MPS_RHS, MPS_RANGES, MPS_BOUNDS, MPS_SOS, MPS_QUADOBJ, MPS_QMATRIX, MPS_QCMATRIX, MPS_INDICATORS, MPS_ENDATA }

Functions
static SCIP_RETCODE	mpsinputCreate (SCIP scip, MPSINPUT mpsi, SCIP_FILE fp)

static void	mpsinputFree (SCIP scip, MPSINPUT *mpsi)

static MPSSECTION	mpsinputSection (const MPSINPUT *mpsi)

static const char *	mpsinputField0 (const MPSINPUT *mpsi)

static const char *	mpsinputField1 (const MPSINPUT *mpsi)

static const char *	mpsinputField2 (const MPSINPUT *mpsi)

static const char *	mpsinputField3 (const MPSINPUT *mpsi)

static const char *	mpsinputField4 (const MPSINPUT *mpsi)

static const char *	mpsinputField5 (const MPSINPUT *mpsi)

static const char *	mpsinputObjname (const MPSINPUT *mpsi)

static SCIP_OBJSENSE	mpsinputObjsense (const MPSINPUT *mpsi)

static SCIP_Bool	mpsinputHasError (const MPSINPUT *mpsi)

static SCIP_Bool	mpsinputIsInteger (const MPSINPUT *mpsi)

static void	mpsinputSetSection (MPSINPUT *mpsi, MPSSECTION section)

static void	mpsinputSetProbname (MPSINPUT mpsi, const char probname)

static void	mpsinputSetObjname (MPSINPUT mpsi, const char objname)

static void	mpsinputSetObjsense (MPSINPUT *mpsi, SCIP_OBJSENSE sense)

static void	mpsinputSyntaxerror (MPSINPUT *mpsi)

static void	mpsinputEntryIgnored (SCIP scip, MPSINPUT mpsi, const char what, const char what_name, const char entity, const char entity_name, SCIP_VERBLEVEL verblevel)

static void	clearFrom (char *buf, unsigned int pos)

static void	patchField (char *buf, int beg, int end)

static SCIP_Bool	mpsinputReadLine (MPSINPUT *mpsi)

static void	mpsinputInsertField4 (MPSINPUT mpsi, const char str)

static void	mpsinputInsertName (MPSINPUT mpsi, const char name, SCIP_Bool second)

static SCIP_RETCODE	addVarNameToStorage (SCIP scip, const char *varnames, int varnamessize, int nvars, const char colname)

static SCIP_RETCODE	addConsNameToStorage (SCIP scip, const char *consnames, int consnamessize, int ncons, const char rowname)

static SCIP_RETCODE	readName (SCIP scip, MPSINPUT mpsi)

static SCIP_RETCODE	readObjsen (SCIP scip, MPSINPUT mpsi)

static SCIP_RETCODE	readObjname (SCIP scip, MPSINPUT mpsi)

static SCIP_RETCODE	readRows (MPSINPUT mpsi, SCIP scip, const char **consnames, int consnamessize, int *nconsnames)

static SCIP_RETCODE	readCols (MPSINPUT mpsi, SCIP scip, const char **varnames, int varnamessize, int *nvarnames)

static SCIP_RETCODE	readRhs (MPSINPUT mpsi, SCIP scip)

static SCIP_RETCODE	readRanges (MPSINPUT mpsi, SCIP scip)

static SCIP_RETCODE	readBounds (MPSINPUT mpsi, SCIP scip)

static SCIP_RETCODE	readSOS (MPSINPUT mpsi, SCIP scip)

static SCIP_RETCODE	readQMatrix (MPSINPUT mpsi, SCIP_Bool isQuadObj, SCIP scip)

static SCIP_RETCODE	readQCMatrix (MPSINPUT mpsi, SCIP scip)

static SCIP_RETCODE	readIndicators (MPSINPUT mpsi, SCIP scip)

static SCIP_RETCODE	readMps (SCIP scip, const char filename, const char *varnames, const char consnames, int varnamessize, int consnamessize, int nvarnames, int *nconsnames)

static	SCIP_DECL_HASHGETKEY (hashGetKeyNamefreq)

static	SCIP_DECL_HASHKEYEQ (hashKeyEqString)

static	SCIP_DECL_HASHGETKEY (hashGetKeyVar)

static	SCIP_DECL_HASHKEYEQ (hashKeyEqVar)

static	SCIP_DECL_HASHKEYVAL (hashKeyValVar)

static unsigned int	computeFieldWidth (unsigned int width)

static void	printRecord (SCIP scip, FILE file, const char col1, const char col2, unsigned int maxnamelen)

static void	printStart (SCIP scip, FILE file, const char col1, const char col2, int maxnamelen)

static void	printEntry (SCIP scip, FILE file, const char varname, const char consname, SCIP_Real value, int *recordcnt, unsigned int maxnamelen)

static void	printRowType (SCIP scip, FILE file, SCIP_Real lhs, SCIP_Real rhs, const char *name)

static SCIP_RETCODE	initializeMatrix (SCIP scip, SPARSEMATRIX *matrix, int slots)

static SCIP_RETCODE	checkSparseMatrixCapacity (SCIP scip, SPARSEMATRIX matrix, int capacity)

static void	freeMatrix (SCIP scip, SPARSEMATRIX matrix)

static SCIP_RETCODE	getLinearCoeffs (SCIP scip, const char consname, SCIP_VAR *vars, SCIP_Real vals, int nvars, SCIP_Bool transformed, SPARSEMATRIX matrix, SCIP_Real rhs)

static SCIP_RETCODE	collectAggregatedVars (SCIP scip, SCIP_VAR vars, int nvars, SCIP_VAR *aggvars, int naggvars, int saggvars, SCIP_HASHTABLE varAggregated)

static SCIP_RETCODE	checkVarnames (SCIP scip, SCIP_VAR vars, int nvars, unsigned int maxnamelen, const char *varnames, SCIP_HASHMAP varnameHashmap)

static SCIP_RETCODE	checkConsnames (SCIP scip, SCIP_CONS conss, int nconss, SCIP_Bool transformed, unsigned int maxnamelen, const char **consnames, SCIP_Bool error)

static void	printColumnSection (SCIP scip, FILE file, SPARSEMATRIX matrix, SCIP_HASHMAP varnameHashmap, SCIP_HASHTABLE *indicatorSlackHash, unsigned int maxnamelen)

static void	printRhsSection (SCIP scip, FILE file, int nconss, const char *consnames, SCIP_Real rhss, unsigned int maxnamelen, SCIP_Real objoffset)

static void	printRangeSection (SCIP scip, FILE file, SCIP_CONS conss, int nconss, const char consnames, SCIP_Bool transformed, unsigned int maxnamelen)

static void	printBoundSectionName (SCIP scip, FILE file)

static void	printBoundSection (SCIP scip, FILE file, SCIP_VAR vars, int nvars, SCIP_VAR aggvars, int naggvars, SCIP_VAR fixvars, int nfixvars, SCIP_Bool transformed, const char varnames, SCIP_HASHTABLE *indicatorSlackHash, unsigned int maxnamelen)

static	SCIP_DECL_READERCOPY (readerCopyMps)

static	SCIP_DECL_READERFREE (readerFreeMps)

static	SCIP_DECL_READERREAD (readerReadMps)

static	SCIP_DECL_READERWRITE (readerWriteMps)

SCIP_RETCODE	SCIPincludeReaderMps (SCIP *scip)

SCIP_RETCODE	SCIPreadMps (SCIP scip, SCIP_READER reader, const char filename, SCIP_RESULT result, const char *varnames, const char consnames, int varnamessize, int consnamessize, int nvarnames, int *nconsnames)

SCIP_RETCODE	SCIPwriteMps (SCIP scip, SCIP_READER reader, FILE file, const char name, SCIP_Bool transformed, SCIP_OBJSENSE objsense, SCIP_Real objscale, SCIP_Real objoffset, SCIP_VAR vars, int nvars, int nbinvars, int nintvars, int nimplvars, int ncontvars, SCIP_VAR fixedvars, int nfixedvars, SCIP_CONS *conss, int nconss, SCIP_RESULT result)

Macro Definition Documentation

◆ READER_NAME

#define READER_NAME "mpsreader"

Definition at line 78 of file reader_mps.c.

Referenced by SCIP_DECL_READERCOPY(), SCIP_DECL_READERFREE(), SCIP_DECL_READERREAD(), SCIP_DECL_READERWRITE(), SCIPincludeReaderMps(), and SCIPwriteMps().

◆ READER_DESC

#define READER_DESC "file reader for MIQPs in IBM's Mathematical Programming System format"

Definition at line 79 of file reader_mps.c.

Referenced by SCIPincludeReaderMps().

◆ READER_EXTENSION

#define READER_EXTENSION "mps"

Definition at line 80 of file reader_mps.c.

Referenced by SCIPincludeReaderMps().

◆ DEFAULT_LINEARIZE_ANDS

#define DEFAULT_LINEARIZE_ANDS TRUE

should possible "and" constraint be linearized when writing the mps file?

Definition at line 82 of file reader_mps.c.

Referenced by SCIPincludeReaderMps().

◆ DEFAULT_AGGRLINEARIZATION_ANDS

#define DEFAULT_AGGRLINEARIZATION_ANDS TRUE

should an aggregated linearization for and constraints be used?

Definition at line 83 of file reader_mps.c.

Referenced by SCIPincludeReaderMps().

◆ MPS_MAX_LINELEN

#define MPS_MAX_LINELEN 1024

Definition at line 89 of file reader_mps.c.

Referenced by mpsinputReadLine().

◆ MPS_MAX_NAMELEN

#define MPS_MAX_NAMELEN 256

Definition at line 90 of file reader_mps.c.

Referenced by checkConsnames(), checkVarnames(), mpsinputSetObjname(), mpsinputSetProbname(), printRecord(), printStart(), readBounds(), readCols(), readIndicators(), readRanges(), readRhs(), readSOS(), SCIP_DECL_HASHKEYEQ(), and SCIPwriteMps().

◆ MPS_MAX_VALUELEN

#define MPS_MAX_VALUELEN 26

Definition at line 91 of file reader_mps.c.

Referenced by printBoundSection(), printEntry(), printRecord(), and SCIPwriteMps().

◆ MPS_MAX_FIELDLEN

#define MPS_MAX_FIELDLEN 20

Definition at line 92 of file reader_mps.c.

Referenced by computeFieldWidth().

◆ PATCH_CHAR

#define PATCH_CHAR '_'

Definition at line 94 of file reader_mps.c.

Referenced by patchField().

◆ BLANK

#define BLANK ' '

Definition at line 95 of file reader_mps.c.

Referenced by clearFrom(), mpsinputReadLine(), and patchField().

Typedef Documentation

◆ MPSSECTION

typedef enum MpsSection MPSSECTION

Definition at line 124 of file reader_mps.c.

◆ MPSINPUT

typedef struct MpsInput MPSINPUT

Definition at line 150 of file reader_mps.c.

◆ SPARSEMATRIX

typedef struct SparseMatrix SPARSEMATRIX

Definition at line 161 of file reader_mps.c.

◆ CONSNAMEFREQ

typedef struct ConsNameFreq CONSNAMEFREQ

Definition at line 169 of file reader_mps.c.

Enumeration Type Documentation

◆ MpsSection

enum MpsSection

enum containing all mps sections

Enumerator
MPS_NAME
MPS_OBJSEN
MPS_OBJNAME
MPS_ROWS
MPS_USERCUTS
MPS_LAZYCONS
MPS_COLUMNS
MPS_RHS
MPS_RANGES
MPS_BOUNDS
MPS_SOS
MPS_QUADOBJ
MPS_QMATRIX
MPS_QCMATRIX
MPS_INDICATORS
MPS_ENDATA

Definition at line 105 of file reader_mps.c.

Function Documentation

◆ mpsinputCreate()

static SCIP_RETCODE mpsinputCreate	(	SCIP *	scip,
		MPSINPUT **	mpsi,
		SCIP_FILE *	fp
	)

static

creates the mps input structure

Parameters

scip	SCIP data structure
mpsi	mps input structure
fp	file object for the input file

Definition at line 173 of file reader_mps.c.

References FALSE, MPS_NAME, NULL, SCIP_CALL, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIPallocBlockMemory, and SCIPgetBoolParam().

Referenced by readMps().

◆ mpsinputFree()

static void mpsinputFree	(	SCIP *	scip,
		MPSINPUT **	mpsi
	)

static

free the mps input structure

Parameters

scip	SCIP data structure
mpsi	mps input structure

Definition at line 211 of file reader_mps.c.

References SCIPfreeBlockMemory.

Referenced by readMps().

◆ mpsinputSection()

static MPSSECTION mpsinputSection ( const MPSINPUT * mpsi )

static

returns the current section

Parameters

mpsi	mps input structure

Definition at line 221 of file reader_mps.c.

References NULL.

Referenced by readMps(), and readRows().

◆ mpsinputField0()

static const char* mpsinputField0 ( const MPSINPUT * mpsi )

static

return the current value of field 0

Parameters

mpsi	mps input structure

Definition at line 232 of file reader_mps.c.

References NULL.

Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().

◆ mpsinputField1()

static const char* mpsinputField1 ( const MPSINPUT * mpsi )

static

return the current value of field 1

Parameters

mpsi	mps input structure

Definition at line 243 of file reader_mps.c.

References NULL.

Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().

◆ mpsinputField2()

static const char* mpsinputField2 ( const MPSINPUT * mpsi )

static

return the current value of field 2

Parameters

mpsi	mps input structure

Definition at line 254 of file reader_mps.c.

References NULL.

Referenced by readBounds(), readCols(), readIndicators(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().

◆ mpsinputField3()

static const char* mpsinputField3 ( const MPSINPUT * mpsi )

static

return the current value of field 3

Parameters

mpsi	mps input structure

Definition at line 265 of file reader_mps.c.

References NULL.

Referenced by readBounds(), readCols(), readIndicators(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), and readSOS().

◆ mpsinputField4()

static const char* mpsinputField4 ( const MPSINPUT * mpsi )

static

return the current value of field 4

Parameters

mpsi	mps input structure

Definition at line 276 of file reader_mps.c.

References NULL.

Referenced by readBounds(), readCols(), readIndicators(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), and readSOS().

◆ mpsinputField5()

static const char* mpsinputField5 ( const MPSINPUT * mpsi )

static

return the current value of field 5

Parameters

mpsi	mps input structure

Definition at line 287 of file reader_mps.c.

References NULL.

Referenced by readCols(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), and readSOS().

◆ mpsinputObjname()

static const char* mpsinputObjname ( const MPSINPUT * mpsi )

static

returns the objective name

Parameters

mpsi	mps input structure

Definition at line 298 of file reader_mps.c.

References NULL.

Referenced by readCols(), readRhs(), and readRows().

◆ mpsinputObjsense()

static SCIP_OBJSENSE mpsinputObjsense ( const MPSINPUT * mpsi )

static

returns the objective sense

Parameters

mpsi	mps input structure

Definition at line 309 of file reader_mps.c.

References NULL.

Referenced by readMps(), and readQMatrix().

◆ mpsinputHasError()

static SCIP_Bool mpsinputHasError ( const MPSINPUT * mpsi )

static

returns if an error was detected

Parameters

mpsi	mps input structure

Definition at line 320 of file reader_mps.c.

References NULL.

Referenced by readMps().

◆ mpsinputIsInteger()

static SCIP_Bool mpsinputIsInteger ( const MPSINPUT * mpsi )

static

returns the value of the Bool "is integer" in the mps input

Parameters

mpsi	mps input structure

Definition at line 331 of file reader_mps.c.

References NULL.

Referenced by readCols().

◆ mpsinputSetSection()

static void mpsinputSetSection	(	MPSINPUT *	mpsi,
		MPSSECTION	section
	)

static

set the section in the mps input structure to given section

Parameters

mpsi	mps input structure
section	section that is set

Definition at line 342 of file reader_mps.c.

References NULL.

Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().

◆ mpsinputSetProbname()

static void mpsinputSetProbname	(	MPSINPUT *	mpsi,
		const char *	probname
	)

static

set the problem name in the mps input structure to given problem name

Parameters

mpsi	mps input structure
probname	name of the problem to set

Definition at line 354 of file reader_mps.c.

References MPS_MAX_NAMELEN, NULL, and SCIPmemccpy().

Referenced by readName().

◆ mpsinputSetObjname()

static void mpsinputSetObjname	(	MPSINPUT *	mpsi,
		const char *	objname
	)

static

set the objective name in the mps input structure to given objective name

Parameters

mpsi	mps input structure
objname	name of the objective function to set

Definition at line 368 of file reader_mps.c.

References MPS_MAX_NAMELEN, NULL, and SCIPmemccpy().

Referenced by readObjname(), and readRows().

◆ mpsinputSetObjsense()

static void mpsinputSetObjsense	(	MPSINPUT *	mpsi,
		SCIP_OBJSENSE	sense
	)

static

set the objective sense in the mps input structure to given objective sense

Parameters

mpsi	mps input structure
sense	sense of the objective function

Definition at line 382 of file reader_mps.c.

References NULL.

Referenced by readObjsen().

◆ mpsinputSyntaxerror()

static void mpsinputSyntaxerror ( MPSINPUT * mpsi )

static

Parameters

mpsi	mps input structure

Definition at line 393 of file reader_mps.c.

References MPS_ENDATA, NULL, SCIPerrorMessage, and TRUE.

Referenced by readBounds(), readCols(), readIndicators(), readMps(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().

◆ mpsinputEntryIgnored()

static void mpsinputEntryIgnored	(	SCIP *	scip,
		MPSINPUT *	mpsi,
		const char *	what,
		const char *	what_name,
		const char *	entity,
		const char *	entity_name,
		SCIP_VERBLEVEL	verblevel
	)

static

method post a ignore message

Parameters

scip	SCIP data structure
mpsi	mps input structure
what	what get ignored
what_name	name of that object
entity	entity
entity_name	entity name
verblevel	SCIP verblevel for this message

Definition at line 406 of file reader_mps.c.

References NULL, and SCIPverbMessage().

Referenced by readBounds(), readCols(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().

◆ clearFrom()

static void clearFrom	(	char *	buf,
		unsigned int	pos
	)

static

fill the line from pos up to column 80 with blanks.

Parameters

buf	buffer to clear
pos	position to start the clearing process

Definition at line 428 of file reader_mps.c.

References BLANK.

Referenced by mpsinputReadLine().

◆ patchField()

static void patchField	(	char *	buf,
		int	beg,
		int	end
	)

static

change all blanks inside a field to PATCH_CHAR.

Parameters

buf	buffer to patch
beg	position to begin
end	position to end

Definition at line 442 of file reader_mps.c.

References BLANK, and PATCH_CHAR.

Referenced by mpsinputReadLine().

◆ mpsinputReadLine()

static SCIP_Bool mpsinputReadLine ( MPSINPUT * mpsi )

static

read a mps format data line and parse the fields.

Parameters

mpsi	mps input structure

Definition at line 463 of file reader_mps.c.

References BLANK, clearFrom(), FALSE, MPS_BOUNDS, MPS_COLUMNS, MPS_MAX_LINELEN, MPS_RANGES, MPS_RHS, NULL, number, patchField(), SCIP_Bool, SCIPdebugMessage, SCIPfgets(), SCIPstrtok(), and TRUE.

Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().

◆ mpsinputInsertField4()

static void mpsinputInsertField4	(	MPSINPUT *	mpsi,
		const char *	str
	)

static

Insert str as field 4 and shift all other fields up.

Parameters

mpsi	mps input structure
str	str to insert

Definition at line 639 of file reader_mps.c.

References NULL.

Referenced by readBounds().

◆ mpsinputInsertName()

static void mpsinputInsertName	(	MPSINPUT *	mpsi,
		const char *	name,
		SCIP_Bool	second
	)

static

Insert name as field 1 or 2 and shift all other fields up.

Parameters

mpsi	mps input structure
name	name to insert
second	insert as second field?

Definition at line 653 of file reader_mps.c.

References NULL.

Referenced by readBounds(), readRanges(), and readRhs().

◆ addVarNameToStorage()

static SCIP_RETCODE addVarNameToStorage	(	SCIP *	scip,
		const char ***	varnames,
		int *	varnamessize,
		int *	nvars,
		const char *	colname
	)

static

Add variable name to storage

Parameters

scip	SCIP data structure
varnames	the variable name storage
varnamessize	the size of the variable names storage
nvars	the number of variables
colname	the name of the variable

Definition at line 677 of file reader_mps.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPduplicateBlockMemoryArray, and SCIPensureBlockMemoryArray.

Referenced by readCols().

◆ addConsNameToStorage()

static SCIP_RETCODE addConsNameToStorage	(	SCIP *	scip,
		const char ***	consnames,
		int *	consnamessize,
		int *	ncons,
		const char *	rowname
	)

static

Add constraint name to storage

Parameters

scip	SCIP data structure
consnames	the constraint name storage
consnamessize	the size of the constraint names storage
ncons	the number of constraint
rowname	the name of the constraint

Definition at line 699 of file reader_mps.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPduplicateBlockMemoryArray, and SCIPensureBlockMemoryArray.

Referenced by readRows().

◆ readName()

static SCIP_RETCODE readName	(	SCIP *	scip,
		MPSINPUT *	mpsi
	)

static

Process NAME section.

Parameters

scip	SCIP data structure
mpsi	mps input structure

Definition at line 721 of file reader_mps.c.

References MPS_LAZYCONS, MPS_OBJNAME, MPS_OBJSEN, MPS_ROWS, MPS_USERCUTS, mpsinputField0(), mpsinputField1(), mpsinputReadLine(), mpsinputSetProbname(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_OKAY, and SCIPdebugMsg.

Referenced by readMps().

◆ readObjsen()

static SCIP_RETCODE readObjsen	(	SCIP *	scip,
		MPSINPUT *	mpsi
	)

static

Process OBJSEN section. This Section is a CPLEX extension.

Parameters

scip	SCIP data structure
mpsi	mps input structure

Definition at line 769 of file reader_mps.c.

References MPS_LAZYCONS, MPS_OBJNAME, MPS_ROWS, MPS_USERCUTS, mpsinputField0(), mpsinputField1(), mpsinputReadLine(), mpsinputSetObjsense(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_OBJSENSE_MAXIMIZE, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, and SCIPdebugMsg.

Referenced by readMps().

◆ readObjname()

static SCIP_RETCODE readObjname	(	SCIP *	scip,
		MPSINPUT *	mpsi
	)

static

Process OBJNAME section. This Section is a CPLEX extension.

Parameters

scip	SCIP data structure
mpsi	mps input structure

Definition at line 828 of file reader_mps.c.

References MPS_LAZYCONS, MPS_ROWS, MPS_USERCUTS, mpsinputField0(), mpsinputField1(), mpsinputReadLine(), mpsinputSetObjname(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_OKAY, and SCIPdebugMsg.

Referenced by readMps().

◆ readRows()

static SCIP_RETCODE readRows	(	MPSINPUT *	mpsi,
		SCIP *	scip,
		const char ***	consnames,
		int *	consnamessize,
		int *	nconsnames
	)

static

Process ROWS, USERCUTS, or LAZYCONS section.

Parameters

mpsi	mps input structure
scip	SCIP data structure
consnames	storage for the constraint names, or NULL
consnamessize	the size of the constraint names storage, or NULL
nconsnames	the number of stored constraint names, or NULL

Definition at line 867 of file reader_mps.c.

References addConsNameToStorage(), FALSE, MPS_COLUMNS, MPS_LAZYCONS, MPS_ROWS, MPS_USERCUTS, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputObjname(), mpsinputReadLine(), mpsinputSection(), mpsinputSetObjname(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_VERBLEVEL_NORMAL, SCIPaddCons(), SCIPcreateConsLinear(), SCIPdebugMsg, SCIPfindCons(), SCIPinfinity(), SCIPreleaseCons(), and TRUE.

Referenced by readMps().

◆ readCols()

static SCIP_RETCODE readCols	(	MPSINPUT *	mpsi,
		SCIP *	scip,
		const char ***	varnames,
		int *	varnamessize,
		int *	nvarnames
	)

static

Process COLUMNS section.

Parameters

mpsi	mps input structure
scip	SCIP data structure
varnames	storage for the variable names, or NULL
varnamessize	the size of the variable names storage, or NULL
nvarnames	the number of stored variable names, or NULL

Definition at line 962 of file reader_mps.c.

References addVarNameToStorage(), MPS_MAX_NAMELEN, MPS_RHS, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputIsInteger(), mpsinputObjname(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, REALABS, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_READERROR, SCIP_Real, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_CONTINUOUS, SCIP_VERBLEVEL_FULL, SCIPaddCoefLinear(), SCIPaddVar(), SCIPchgVarObj(), SCIPconsGetName(), SCIPcreateVar(), SCIPdebugMsg, SCIPerrorMessage, SCIPfindCons(), SCIPfindVar(), SCIPgetBoolParam(), SCIPinfinity(), SCIPisInfinity(), SCIPisZero(), SCIPmemccpy(), SCIPreleaseVar(), SCIPvarGetName(), and SCIPwarningMessage().

Referenced by readMps().

◆ readRhs()

static SCIP_RETCODE readRhs	(	MPSINPUT *	mpsi,
		SCIP *	scip
	)

static

Process RHS section.

Parameters

mpsi	mps input structure
scip	SCIP data structure

Definition at line 1093 of file reader_mps.c.

References FALSE, MPS_BOUNDS, MPS_ENDATA, MPS_INDICATORS, MPS_MAX_NAMELEN, MPS_QCMATRIX, MPS_QMATRIX, MPS_QUADOBJ, MPS_RANGES, MPS_SOS, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputInsertName(), mpsinputObjname(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPaddOrigObjoffset(), SCIPchgLhsLinear(), SCIPchgRhsLinear(), SCIPdebugMsg, SCIPfindCons(), SCIPgetLhsLinear(), SCIPgetRhsLinear(), SCIPisInfinity(), SCIPisZero(), SCIPmemccpy(), and SCIPwarningMessage().

Referenced by readMps().

◆ readRanges()

static SCIP_RETCODE readRanges	(	MPSINPUT *	mpsi,
		SCIP *	scip
	)

static

Process RANGES section

Parameters

mpsi	mps input structure
scip	SCIP data structure

Definition at line 1240 of file reader_mps.c.

References FALSE, MPS_BOUNDS, MPS_ENDATA, MPS_INDICATORS, MPS_MAX_NAMELEN, MPS_QCMATRIX, MPS_QMATRIX, MPS_QUADOBJ, MPS_SOS, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputInsertName(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, REALABS, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPchgLhsLinear(), SCIPchgRhsLinear(), SCIPdebugMsg, SCIPfindCons(), SCIPgetLhsLinear(), SCIPgetRhsLinear(), SCIPisEQ(), SCIPisInfinity(), SCIPmemccpy(), and SCIPwarningMessage().

Referenced by readMps().

◆ readBounds()

static SCIP_RETCODE readBounds	(	MPSINPUT *	mpsi,
		SCIP *	scip
	)

static

Process BOUNDS section.

Parameters

mpsi	mps input structure
scip	SCIP data structure

Definition at line 1380 of file reader_mps.c.

References FALSE, MPS_ENDATA, MPS_INDICATORS, MPS_MAX_NAMELEN, MPS_QCMATRIX, MPS_QMATRIX, MPS_QUADOBJ, MPS_SOS, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputInsertField4(), mpsinputInsertName(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_Bool, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_CONTINUOUS, SCIP_VARTYPE_IMPLINT, SCIP_VARTYPE_INTEGER, SCIP_VERBLEVEL_NORMAL, SCIPaddCons(), SCIPaddVar(), SCIPallocBufferArray, SCIPcalcMemGrowSize(), SCIPchgVarLb(), SCIPchgVarType(), SCIPchgVarUb(), SCIPcreateConsBounddisjunction(), SCIPcreateVar(), SCIPdebugMsg, SCIPdebugPrintCons, SCIPfindVar(), SCIPfreeBufferArrayNull, SCIPinfinity(), SCIPisFeasEQ(), SCIPisFeasIntegral(), SCIPisGT(), SCIPisInfinity(), SCIPisLT(), SCIPisZero(), SCIPmemccpy(), SCIPreallocBufferArray, SCIPreleaseCons(), SCIPreleaseVar(), SCIPsnprintf(), SCIPvarGetLbGlobal(), SCIPvarGetName(), SCIPvarGetType(), SCIPvarGetUbGlobal(), SCIPwarningMessage(), and TRUE.

Referenced by readMps().

◆ readSOS()

static SCIP_RETCODE readSOS	(	MPSINPUT *	mpsi,
		SCIP *	scip
	)

static

Process SOS section.

We read the SOS section, which is a nonstandard section introduced by CPLEX.

Note: Currently we do not support the standard way of specifying SOS constraints via markers.

Parameters

mpsi	mps input structure
scip	SCIP data structure

Definition at line 1756 of file reader_mps.c.

References FALSE, MPS_ENDATA, MPS_INDICATORS, MPS_MAX_NAMELEN, MPS_QCMATRIX, MPS_QMATRIX, MPS_QUADOBJ, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPABORT, SCIPaddCons(), SCIPaddVarSOS1(), SCIPaddVarSOS2(), SCIPconsGetName(), SCIPcreateConsSOS1(), SCIPcreateConsSOS2(), SCIPdebugMsg, SCIPdebugPrintCons, SCIPerrorMessage, SCIPfindVar(), SCIPmemccpy(), SCIPreleaseCons(), SCIPsnprintf(), SCIPvarGetName(), SCIPwarningMessage(), and TRUE.

Referenced by readMps().

◆ readQMatrix()

static SCIP_RETCODE readQMatrix	(	MPSINPUT *	mpsi,
		SCIP_Bool	isQuadObj,
		SCIP *	scip
	)

static

Process QMATRIX or QUADOBJ section.

We read the QMATRIX or QUADOBJ section, which is a nonstandard section introduced by CPLEX.
We create a quadratic constraint for this matrix and add a variable to the objective to represent the value of the QMATRIX.
For a QMATRIX, we expect that both lower and upper diagonal elements are given and every coefficient has to be divided by 2.0.
For a QUADOBJ, we expect that only the upper diagonal elements are given and thus only coefficients on the diagonal have to be divided by 2.0.

Parameters

mpsi	mps input structure
isQuadObj	whether we actually read a QUADOBJ section
scip	SCIP data structure

Definition at line 1950 of file reader_mps.c.

References FALSE, MPS_ENDATA, MPS_INDICATORS, MPS_QCMATRIX, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputObjsense(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_Bool, SCIP_CALL, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_CONTINUOUS, SCIP_VERBLEVEL_NORMAL, SCIPaddCons(), SCIPaddVar(), SCIPallocBufferArray, SCIPcalcMemGrowSize(), SCIPconsGetName(), SCIPcreateConsQuadraticNonlinear(), SCIPcreateVar(), SCIPdebugMsg, SCIPdebugPrintCons, SCIPerrorMessage, SCIPfindVar(), SCIPfreeBufferArray, SCIPinfinity(), SCIPreallocBufferArray, SCIPreleaseCons(), SCIPreleaseVar(), SCIPvarGetName(), SCIPwarningMessage(), and TRUE.

Referenced by readMps().

◆ readQCMatrix()

static SCIP_RETCODE readQCMatrix	(	MPSINPUT *	mpsi,
		SCIP *	scip
	)

static

Process QCMATRIX section.

We read the QCMATRIX section, which is a nonstandard section introduced by CPLEX.

We replace the corresponding linear constraint by a quadratic constraint which contains the original linear constraint plus the quadratic part specified in the QCMATRIX.

Parameters

mpsi	mps input structure
scip	SCIP data structure

Definition at line 2163 of file reader_mps.c.

References MPS_ENDATA, MPS_INDICATORS, MPS_QCMATRIX, MPS_QMATRIX, MPS_QUADOBJ, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPaddCons(), SCIPallocBufferArray, SCIPcalcMemGrowSize(), SCIPconsGetName(), SCIPconsIsChecked(), SCIPconsIsDynamic(), SCIPconsIsEnforced(), SCIPconsIsInitial(), SCIPconsIsLocal(), SCIPconsIsModifiable(), SCIPconsIsPropagated(), SCIPconsIsRemovable(), SCIPconsIsSeparated(), SCIPcreateConsQuadraticNonlinear(), SCIPdebugMsg, SCIPdebugPrintCons, SCIPdelCons(), SCIPerrorMessage, SCIPfindCons(), SCIPfindVar(), SCIPfreeBufferArray, SCIPgetLhsLinear(), SCIPgetNVarsLinear(), SCIPgetRhsLinear(), SCIPgetValsLinear(), SCIPgetVarsLinear(), SCIPreallocBufferArray, SCIPreleaseCons(), SCIPvarGetName(), and SCIPwarningMessage().

Referenced by readMps().

◆ readIndicators()

static SCIP_RETCODE readIndicators	(	MPSINPUT *	mpsi,
		SCIP *	scip
	)

static

Process INDICATORS section.

We read the INDICATORS section, which is a nonstandard section introduced by CPLEX. Note that CPLEX does not allow ranged rows.

If the linear constraints are equations or ranged rows, we generate two indicator constraints.

The section has to come after the QMATRIX* sections.

Parameters

mpsi	mps input structure
scip	SCIP data structure

Definition at line 2347 of file reader_mps.c.

References FALSE, MPS_ENDATA, MPS_MAX_NAMELEN, mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_CONTINUOUS, SCIP_VARTYPE_IMPLINT, SCIPaddCoefLinear(), SCIPaddCons(), SCIPaddVar(), SCIPallocBufferArray, SCIPchgLhsLinear(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetName(), SCIPcreateConsIndicator(), SCIPcreateConsIndicatorLinCons(), SCIPcreateVar(), SCIPdebugMsg, SCIPdebugPrintCons, SCIPerrorMessage, SCIPfindCons(), SCIPfindVar(), SCIPfreeBufferArray, SCIPgetLhsLinear(), SCIPgetNegatedVar(), SCIPgetNVarsLinear(), SCIPgetRhsLinear(), SCIPgetValsLinear(), SCIPgetVarsLinear(), SCIPinfinity(), SCIPisInfinity(), SCIPisIntegral(), SCIPreleaseCons(), SCIPreleaseVar(), SCIPsnprintf(), SCIPvarGetType(), SCIPvarIsIntegral(), and TRUE.

Referenced by readMps().

◆ readMps()

static SCIP_RETCODE readMps	(	SCIP *	scip,
		const char *	filename,
		const char ***	varnames,
		const char ***	consnames,
		int *	varnamessize,
		int *	consnamessize,
		int *	nvarnames,
		int *	nconsnames
	)

static

Read LP in "MPS File Format".

A specification of the MPS format can be found at

http://plato.asu.edu/ftp/mps_format.txt, ftp://ftp.caam.rice.edu/pub/people/bixby/miplib/mps_format,

and in the

CPLEX Reference Manual

This routine should read all valid MPS format files. What it will not do, is to find all cases where a file is ill formed. If this happens it may complain and read nothing or read "something".

Parameters

scip	SCIP data structure
filename	name of the input file
varnames	storage for the variable names, or NULL
consnames	storage for the constraint names, or NULL
varnamessize	the size of the variable names storage, or NULL
consnamessize	the size of the constraint names storage, or NULL
nvarnames	the number of stored variable names, or NULL
nconsnames	the number of stored constraint names, or NULL

Definition at line 2584 of file reader_mps.c.

References FALSE, MPS_BOUNDS, MPS_COLUMNS, MPS_ENDATA, MPS_INDICATORS, MPS_LAZYCONS, MPS_OBJNAME, MPS_OBJSEN, MPS_QCMATRIX, MPS_QMATRIX, MPS_QUADOBJ, MPS_RANGES, MPS_RHS, MPS_ROWS, MPS_SOS, MPS_USERCUTS, mpsinputCreate(), mpsinputFree(), mpsinputHasError(), mpsinputObjsense(), mpsinputSection(), mpsinputSyntaxerror(), NULL, readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), readSOS(), SCIP_Bool, SCIP_CALL, SCIP_CALL_TERMINATE, SCIP_NOFILE, SCIP_OKAY, SCIP_READERROR, SCIPcreateProb(), SCIPerrorMessage, SCIPfclose(), SCIPfopen(), SCIPprintSysError(), SCIPsetObjsense(), and TRUE.

Referenced by SCIPreadMps().

◆ SCIP_DECL_HASHGETKEY() [1/2]

static SCIP_DECL_HASHGETKEY ( hashGetKeyNamefreq )

static

gets the key (i.e. the name) of the given namefreq

Definition at line 2698 of file reader_mps.c.

References ConsNameFreq::consname, and NULL.

◆ SCIP_DECL_HASHKEYEQ() [1/2]

static SCIP_DECL_HASHKEYEQ ( hashKeyEqString )

static

returns TRUE iff both keys (i.e. strings) are equal up to max length

Definition at line 2710 of file reader_mps.c.

References MPS_MAX_NAMELEN.

◆ SCIP_DECL_HASHGETKEY() [2/2]

static SCIP_DECL_HASHGETKEY ( hashGetKeyVar )

static

hash key retrieval function for variables

Definition at line 2720 of file reader_mps.c.

◆ SCIP_DECL_HASHKEYEQ() [2/2]

static SCIP_DECL_HASHKEYEQ ( hashKeyEqVar )

static

returns TRUE iff the indices of both variables are equal

Definition at line 2727 of file reader_mps.c.

References FALSE, and TRUE.

◆ SCIP_DECL_HASHKEYVAL()

static SCIP_DECL_HASHKEYVAL ( hashKeyValVar )

static

returns the hash value of the key

Definition at line 2736 of file reader_mps.c.

References SCIPvarGetIndex().

◆ computeFieldWidth()

static unsigned int computeFieldWidth ( unsigned int width )

static

computes the field width such that the output file is nicely arranged

Parameters

width required width

Definition at line 2745 of file reader_mps.c.

References MAX, and MPS_MAX_FIELDLEN.

Referenced by printRecord(), and printStart().

◆ printRecord()

static void printRecord	(	SCIP *	scip,
		FILE *	file,
		const char *	col1,
		const char *	col2,
		unsigned int	maxnamelen
	)

static

output two strings in columns 1 and 2 with computed widths

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
col1	column 1
col2	column 2
maxnamelen	maximum name length

Definition at line 2756 of file reader_mps.c.

References computeFieldWidth(), MPS_MAX_NAMELEN, MPS_MAX_VALUELEN, NULL, SCIPinfoMessage(), and SCIPsnprintf().

Referenced by printBoundSection(), printColumnSection(), printEntry(), and SCIPwriteMps().

◆ printStart()

static void printStart	(	SCIP *	scip,
		FILE *	file,
		const char *	col1,
		const char *	col2,
		int	maxnamelen
	)

static

output two strings in columns 1 (width 2) and 2 (width 8)

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
col1	column 1
col2	column 2
maxnamelen	maximum name length (-1 if irrelevant)

Definition at line 2782 of file reader_mps.c.

References computeFieldWidth(), MPS_MAX_NAMELEN, NULL, SCIPinfoMessage(), and SCIPsnprintf().

Referenced by printBoundSection(), printColumnSection(), printEntry(), printRowType(), and SCIPwriteMps().

◆ printEntry()

static void printEntry	(	SCIP *	scip,
		FILE *	file,
		const char *	varname,
		const char *	consname,
		SCIP_Real	value,
		int *	recordcnt,
		unsigned int	maxnamelen
	)

static

prints the given data as column entry

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
varname	variable name
consname	constraint name
value	value to display
recordcnt	pointer to store the number of records per line
maxnamelen	maximum name length

Definition at line 2816 of file reader_mps.c.

References MPS_MAX_VALUELEN, NULL, printRecord(), printStart(), SCIPinfoMessage(), and SCIPsnprintf().

Referenced by printColumnSection(), printRangeSection(), and printRhsSection().

◆ printRowType()

static void printRowType	(	SCIP *	scip,
		FILE *	file,
		SCIP_Real	lhs,
		SCIP_Real	rhs,
		const char *	name
	)

static

prints the constraint type to file stream

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
lhs	left hand side
rhs	right hand side
name	constraint name

Definition at line 2854 of file reader_mps.c.

References NULL, printStart(), SCIPinfoMessage(), SCIPisEQ(), SCIPisGT(), SCIPisInfinity(), and SCIPsnprintf().

Referenced by SCIPwriteMps().

◆ initializeMatrix()

static SCIP_RETCODE initializeMatrix	(	SCIP *	scip,
		SPARSEMATRIX **	matrix,
		int	slots
	)

static

initializes the sparse matrix

Parameters

scip	SCIP data structure
matrix	pointer to sparse matrix containing the entries
slots	number of slots

Definition at line 2892 of file reader_mps.c.

References SCIP_CALL, SCIP_OKAY, SCIPallocBuffer, and SCIPallocBufferArray.

Referenced by SCIPwriteMps().

◆ checkSparseMatrixCapacity()

static SCIP_RETCODE checkSparseMatrixCapacity	(	SCIP *	scip,
		SPARSEMATRIX *	matrix,
		int	capacity
	)

static

this method takes care that the required capacity is available in the sparse matrix

Parameters

scip	SCIP data structure
matrix	sparse matrix for storing the coefficient
capacity	needed capacity

Definition at line 2910 of file reader_mps.c.

References SCIP_CALL, SCIP_OKAY, and SCIPreallocBufferArray.

Referenced by getLinearCoeffs(), and SCIPwriteMps().

◆ freeMatrix()

static void freeMatrix	(	SCIP *	scip,
		SPARSEMATRIX *	matrix
	)

static

frees the sparse matrix

Parameters

scip	SCIP data structure
matrix	sparse matrix to free

Definition at line 2928 of file reader_mps.c.

References SCIPfreeBuffer, and SCIPfreeBufferArray.

Referenced by SCIPwriteMps().

◆ getLinearCoeffs()

static SCIP_RETCODE getLinearCoeffs	(	SCIP *	scip,
		const char *	consname,
		SCIP_VAR **	vars,
		SCIP_Real *	vals,
		int	nvars,
		SCIP_Bool	transformed,
		SPARSEMATRIX *	matrix,
		SCIP_Real *	rhs
	)

static

computes the coefficient for the given variables and linear constraint information

Parameters

scip	SCIP data structure
consname	name of the constraint
vars	array of variables
vals	array of coefficients values (or NULL if all coefficient values are 1)
nvars	number of variables
transformed	transformed constraint?
matrix	sparse matrix for storing the coefficient
rhs	pointer to right hand side

Definition at line 2943 of file reader_mps.c.

References checkSparseMatrixCapacity(), ConsNameFreq::consname, NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_NEGATED, SCIPallocBufferArray, SCIPduplicateBufferArray, SCIPfreeBufferArray, SCIPgetProbvarLinearSum(), SCIPisInfinity(), SCIPreallocBufferArray, SCIPvarGetNegatedVar(), SCIPvarGetOrigvarSum(), SCIPvarGetStatus(), and TRUE.

Referenced by SCIPwriteMps().

◆ collectAggregatedVars()

static SCIP_RETCODE collectAggregatedVars	(	SCIP *	scip,
		SCIP_VAR **	vars,
		int	nvars,
		SCIP_VAR ***	aggvars,
		int *	naggvars,
		int *	saggvars,
		SCIP_HASHTABLE *	varAggregated
	)

static

check whether given variables are aggregated and put them into an array without duplication

Parameters

scip	SCIP data structure
vars	variable array
nvars	number of active variables in the problem
aggvars	pointer to array storing the aggregated variables on output
naggvars	pointer to number of aggregated variables on output
saggvars	pointer to number of slots in aggvars array
varAggregated	hashtable for checking duplicates

Definition at line 3046 of file reader_mps.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_MULTAGGR, SCIP_VARSTATUS_NEGATED, SCIPcalcMemGrowSize(), SCIPhashtableExists(), SCIPhashtableInsert(), SCIPreallocBlockMemoryArray, and SCIPvarGetStatus().

Referenced by SCIPwriteMps().

◆ checkVarnames()

static SCIP_RETCODE checkVarnames	(	SCIP *	scip,
		SCIP_VAR **	vars,
		int	nvars,
		unsigned int *	maxnamelen,
		const char ***	varnames,
		SCIP_HASHMAP **	varnameHashmap
	)

static

method check if the variable names are not longer than MPS_MAX_NAMELEN - 1

Parameters

scip	SCIP data structure
vars	array of variables
nvars	number of variables
maxnamelen	pointer to store the maximum name length
varnames	pointer to array of variable names
varnameHashmap	pointer to hash map storing variable, variable name mapping

Definition at line 3103 of file reader_mps.c.

References MAX, MPS_MAX_NAMELEN, NULL, SCIP_CALL, SCIP_OKAY, SCIPallocBufferArray, SCIPblkmem(), SCIPhashmapCreate(), SCIPhashmapExists(), SCIPhashmapInsert(), SCIPsnprintf(), SCIPvarGetName(), and SCIPwarningMessage().

Referenced by SCIPwriteMps().

◆ checkConsnames()

static SCIP_RETCODE checkConsnames	(	SCIP *	scip,
		SCIP_CONS **	conss,
		int	nconss,
		SCIP_Bool	transformed,
		unsigned int *	maxnamelen,
		const char ***	consnames,
		SCIP_Bool *	error
	)

static

method check if the constraint names are not longer than MPS_MAX_NAMELEN - 1

Parameters

scip	SCIP data structure
conss	array of all constraints
nconss	number of all constraints
transformed	TRUE iff problem is the transformed problem
maxnamelen	pointer to store the maximum name length
consnames	pointer to array of constraint names
error	pointer to store whether all constraint names exist

Definition at line 3167 of file reader_mps.c.

References ConsNameFreq::consname, FALSE, ConsNameFreq::freq, MAX, MPS_MAX_NAMELEN, NULL, SCIP_CALL, SCIP_HASHSIZE_NAMES, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPblkmem(), SCIPconsGetName(), SCIPconsIsEnabled(), SCIPfreeBufferArray, SCIPhashtableCreate(), SCIPhashtableFree(), SCIPhashtableInsert(), SCIPhashtableRetrieve(), SCIPsnprintf(), SCIPwarningMessage(), and TRUE.

Referenced by SCIPwriteMps().

◆ printColumnSection()

static void printColumnSection	(	SCIP *	scip,
		FILE *	file,
		SPARSEMATRIX *	matrix,
		SCIP_HASHMAP *	varnameHashmap,
		SCIP_HASHTABLE *	indicatorSlackHash,
		unsigned int	maxnamelen
	)

static

outputs the COLUMNS section of the MPS format

Parameters

scip	SCIP data structure
file	output file, or NULL if standard output should be used
matrix	sparse matrix containing the entries
varnameHashmap	map from SCIP_VAR* to variable name
indicatorSlackHash	hashtable containing slack variables from indicators (or NULL)
maxnamelen	maximum name length

Definition at line 3273 of file reader_mps.c.

References FALSE, NULL, printEntry(), printRecord(), printStart(), SCIP_Bool, SCIP_Real, SCIP_VARTYPE_CONTINUOUS, SCIPdebugMsg, SCIPhashmapExists(), SCIPhashmapGetImage(), SCIPhashtableExists(), SCIPinfoMessage(), SCIPsortPtrPtrReal(), SCIPvarGetName(), SCIPvarGetType(), and TRUE.

Referenced by SCIPwriteMps().

◆ printRhsSection()

static void printRhsSection	(	SCIP *	scip,
		FILE *	file,
		int	nconss,
		const char **	consnames,
		SCIP_Real *	rhss,
		unsigned int	maxnamelen,
		SCIP_Real	objoffset
	)

static

outputs the right hand side section

Parameters

scip	SCIP data structure
file	output file, or NULL if standard output should be used
nconss	number of constraints
consnames	constraint names
rhss	right hand side array
maxnamelen	maximum name length
objoffset	objective offset

Definition at line 3365 of file reader_mps.c.

References NULL, printEntry(), SCIPdebugMsg, SCIPinfoMessage(), SCIPisInfinity(), and SCIPisZero().

Referenced by SCIPwriteMps().

◆ printRangeSection()

static void printRangeSection	(	SCIP *	scip,
		FILE *	file,
		SCIP_CONS **	conss,
		int	nconss,
		const char **	consnames,
		SCIP_Bool	transformed,
		unsigned int	maxnamelen
	)

static

outputs the range section

Parameters

scip	SCIP data structure
file	output file, or NULL if standard output should be used
conss	constraint array
nconss	number of constraints
consnames	constraint names
transformed	TRUE iff problem is the transformed problem
maxnamelen	maximum name length

Definition at line 3408 of file reader_mps.c.

References NULL, printEntry(), SCIP_Real, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPconsIsEnabled(), SCIPdebugMsg, SCIPgetLhsLinear(), SCIPgetLhsVarbound(), SCIPgetRhsLinear(), SCIPgetRhsVarbound(), SCIPinfoMessage(), SCIPisEQ(), SCIPisGT(), and SCIPisInfinity().

Referenced by SCIPwriteMps().

◆ printBoundSectionName()

static void printBoundSectionName	(	SCIP *	scip,
		FILE *	file
	)

static

print bound section name

Parameters

scip	SCIP data structure
file	output file, or NULL if standard output should be used

Definition at line 3473 of file reader_mps.c.

References SCIPdebugMsg, and SCIPinfoMessage().

Referenced by printBoundSection().

◆ printBoundSection()

static void printBoundSection	(	SCIP *	scip,
		FILE *	file,
		SCIP_VAR **	vars,
		int	nvars,
		SCIP_VAR **	aggvars,
		int	naggvars,
		SCIP_VAR **	fixvars,
		int	nfixvars,
		SCIP_Bool	transformed,
		const char **	varnames,
		SCIP_HASHTABLE *	indicatorSlackHash,
		unsigned int	maxnamelen
	)

static

output bound section

Parameters

scip	SCIP data structure
file	output file, or NULL if standard output should be used
vars	active variables
nvars	number of active variables
aggvars	needed aggregated variables
naggvars	number of aggregated variables
fixvars	all fixed variables (or NULL if nfixvars is 0)
nfixvars	number of fixed variables
transformed	TRUE iff problem is the transformed problem
varnames	array with variable names
indicatorSlackHash	hashtable containing slack variables from indicators (or NULL)
maxnamelen	maximum name length

Definition at line 3484 of file reader_mps.c.

References FALSE, MPS_MAX_VALUELEN, NULL, printBoundSectionName(), printRecord(), printStart(), SCIP_Bool, SCIP_Real, SCIP_VARSTATUS_FIXED, SCIP_VARTYPE_BINARY, SCIPhashtableExists(), SCIPinfoMessage(), SCIPisEQ(), SCIPisFeasEQ(), SCIPisFeasZero(), SCIPisInfinity(), SCIPisZero(), SCIPsnprintf(), SCIPvarGetLbLocal(), SCIPvarGetLbOriginal(), SCIPvarGetName(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarGetUbLocal(), SCIPvarGetUbOriginal(), and TRUE.

Referenced by SCIPwriteMps().

◆ SCIP_DECL_READERCOPY()

static SCIP_DECL_READERCOPY ( readerCopyMps )

static

copy method for reader plugins (called when SCIP copies plugins) ! [SnippetReaderCopyMps]

Definition at line 3747 of file reader_mps.c.

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

◆ SCIP_DECL_READERFREE()

static SCIP_DECL_READERFREE ( readerFreeMps )

static

! [SnippetReaderCopyMps] destructor of reader to free user data (called when SCIP is exiting) ! [SnippetReaderFreeMps]

Definition at line 3763 of file reader_mps.c.

References NULL, READER_NAME, SCIP_OKAY, SCIPfreeBlockMemory, SCIPreaderGetData(), and SCIPreaderGetName().

◆ SCIP_DECL_READERREAD()

static SCIP_DECL_READERREAD ( readerReadMps )

static

! [SnippetReaderFreeMps] problem reading method of reader

Definition at line 3778 of file reader_mps.c.

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

◆ SCIP_DECL_READERWRITE()

static SCIP_DECL_READERWRITE ( readerWriteMps )

static

problem writing method of reader

Definition at line 3791 of file reader_mps.c.

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

SCIP

Detailed Description

Data Structures

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

◆ READER_NAME

◆ READER_DESC

◆ READER_EXTENSION

◆ DEFAULT_LINEARIZE_ANDS

◆ DEFAULT_AGGRLINEARIZATION_ANDS

◆ MPS_MAX_LINELEN

◆ MPS_MAX_NAMELEN

◆ MPS_MAX_VALUELEN

◆ MPS_MAX_FIELDLEN

◆ PATCH_CHAR

◆ BLANK

Typedef Documentation

◆ MPSSECTION

◆ MPSINPUT

◆ SPARSEMATRIX

◆ CONSNAMEFREQ

Enumeration Type Documentation

◆ MpsSection

Function Documentation

◆ mpsinputCreate()

◆ mpsinputFree()

◆ mpsinputSection()

◆ mpsinputField0()

◆ mpsinputField1()

◆ mpsinputField2()

◆ mpsinputField3()

◆ mpsinputField4()

◆ mpsinputField5()

◆ mpsinputObjname()

◆ mpsinputObjsense()

◆ mpsinputHasError()

◆ mpsinputIsInteger()

◆ mpsinputSetSection()

◆ mpsinputSetProbname()

◆ mpsinputSetObjname()

◆ mpsinputSetObjsense()

◆ mpsinputSyntaxerror()

◆ mpsinputEntryIgnored()

◆ clearFrom()

◆ patchField()

◆ mpsinputReadLine()

◆ mpsinputInsertField4()

◆ mpsinputInsertName()

◆ addVarNameToStorage()

◆ addConsNameToStorage()

◆ readName()

◆ readObjsen()

◆ readObjname()

◆ readRows()

◆ readCols()

◆ readRhs()

◆ readRanges()

◆ readBounds()

◆ readSOS()

◆ readQMatrix()

◆ readQCMatrix()

◆ readIndicators()

◆ readMps()

◆ SCIP_DECL_HASHGETKEY() [1/2]

◆ SCIP_DECL_HASHKEYEQ() [1/2]

◆ SCIP_DECL_HASHGETKEY() [2/2]

◆ SCIP_DECL_HASHKEYEQ() [2/2]

◆ SCIP_DECL_HASHKEYVAL()

◆ computeFieldWidth()

◆ printRecord()

◆ printStart()

◆ printEntry()

◆ printRowType()

◆ initializeMatrix()

◆ checkSparseMatrixCapacity()

◆ freeMatrix()

◆ getLinearCoeffs()