reader_lp.c File Reference

Detailed Description

LP file reader.

Author

Tobias Achterberg

Marc Pfetsch

Stefan Heinz

Stefan Vigerske

Michael Winkler

Lars Schewe

Definition in file reader_lp.c.

#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include "scip/reader_lp.h"
#include "scip/cons_knapsack.h"
#include "scip/cons_linear.h"
#include "scip/cons_logicor.h"
#include "scip/cons_setppc.h"
#include "scip/cons_varbound.h"
#include "scip/cons_and.h"
#include "scip/cons_sos1.h"
#include "scip/cons_sos2.h"
#include "scip/cons_indicator.h"
#include "scip/cons_quadratic.h"
#include "scip/cons_soc.h"
#include "scip/cons_bounddisjunction.h"
#include "scip/pub_misc.h"

Go to the source code of this file.

Macros
#define	READER_NAME   "lpreader"
#define	READER_DESC   "file reader for MIPs in IBM CPLEX's LP file format"
#define	READER_EXTENSION   "lp"
#define	DEFAULT_LINEARIZE_ANDS   TRUE
#define	DEFAULT_AGGRLINEARIZATION_ANDS   TRUE
#define	LP_MAX_LINELEN   65536
#define	LP_MAX_PUSHEDTOKENS   2
#define	LP_INIT_COEFSSIZE   8192
#define	LP_INIT_QUADCOEFSSIZE   16
#define	LP_MAX_PRINTLEN   561
#define	LP_MAX_NAMELEN   256
#define	LP_PRINTLEN   100

Typedefs
typedef enum LpSection	LPSECTION
typedef enum LpExpType	LPEXPTYPE
typedef enum LpSense	LPSENSE
typedef struct LpInput	LPINPUT

Enumerations
enum	LpSection {   LP_START,   LP_OBJECTIVE,   LP_END,   LP_START,   LP_OBJECTIVE,   LP_CONSTRAINTS,   LP_BOUNDS,   LP_GENERALS,   LP_BINARIES,   LP_SEMICONTINUOUS,   LP_SOS,   LP_END }
enum	LpExpType {   LP_EXP_NONE,   LP_EXP_UNSIGNED,   LP_EXP_SIGNED,   LP_EXP_NONE,   LP_EXP_UNSIGNED,   LP_EXP_SIGNED }
enum	LpSense {   LP_SENSE_LE,   LP_SENSE_GE,   LP_SENSE_EQ,   LP_SENSE_NOTHING,   LP_SENSE_LE,   LP_SENSE_GE,   LP_SENSE_EQ }

Functions
static void	syntaxError (SCIP *scip, LPINPUT *lpinput, const char *msg)
static SCIP_Bool	hasError (LPINPUT *lpinput)
static SCIP_Bool	isDelimChar (char c)
static SCIP_Bool	isTokenChar (char c)
static SCIP_Bool	isValueChar (char c, char nextc, SCIP_Bool firstchar, SCIP_Bool *hasdot, LPEXPTYPE *exptype)
static SCIP_Bool	getNextLine (SCIP *scip, LPINPUT *lpinput)
static void	swapPointers (char **pointer1, char **pointer2)
static SCIP_Bool	getNextToken (SCIP *scip, LPINPUT *lpinput)
static void	pushToken (LPINPUT *lpinput)
static void	pushBufferToken (LPINPUT *lpinput)
static void	swapTokenBuffer (LPINPUT *lpinput)
static SCIP_Bool	isNewSection (SCIP *scip, LPINPUT *lpinput)
static SCIP_Bool	isSign (LPINPUT *lpinput, int *sign)
static SCIP_Bool	isValue (SCIP *scip, LPINPUT *lpinput, SCIP_Real *value)
static SCIP_Bool	isSense (LPINPUT *lpinput, LPSENSE *sense)
static SCIP_RETCODE	getVariable (SCIP *scip, char *name, SCIP_VAR **var, SCIP_Bool *created)
static SCIP_RETCODE	readStart (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	readCoefficients (SCIP *scip, LPINPUT *lpinput, SCIP_Bool isobjective, char *name, SCIP_VAR ***vars, SCIP_Real **coefs, int *ncoefs, SCIP_VAR ***quadvars1, SCIP_VAR ***quadvars2, SCIP_Real **quadcoefs, int *nquadcoefs, SCIP_Bool *newsection)
static SCIP_RETCODE	readObjective (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	createIndicatorConstraint (SCIP *scip, LPINPUT *lpinput, const char *name, SCIP_VAR *binvar, SCIP_Real binvalue)
static SCIP_RETCODE	readConstraints (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	readBounds (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	readGenerals (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	readBinaries (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	readSemicontinuous (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	readSos (SCIP *scip, LPINPUT *lpinput)
static SCIP_RETCODE	readLPFile (SCIP *scip, LPINPUT *lpinput, const char *filename)
static	SCIP_DECL_HASHGETKEY (hashGetKeyVar)
static	SCIP_DECL_HASHKEYEQ (hashKeyEqVar)
static	SCIP_DECL_HASHKEYVAL (hashKeyValVar)
static SCIP_RETCODE	getActiveVariables (SCIP *scip, SCIP_VAR ***vars, SCIP_Real **scalars, int *nvars, SCIP_Real *constant, SCIP_Bool transformed)
static void	clearLine (char *linebuffer, int *linecnt)
static void	endLine (SCIP *scip, FILE *file, char *linebuffer, int *linecnt)
static void	appendLine (SCIP *scip, FILE *file, char *linebuffer, int *linecnt, const char *extension)
static void	printRow (SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, SCIP_VAR **linvars, SCIP_Real *linvals, int nlinvars, SCIP_QUADVARTERM *quadvarterms, int nquadvarterms, SCIP_BILINTERM *bilinterms, int nbilinterms, SCIP_Real rhs)
static SCIP_RETCODE	printQuadraticCons (SCIP *scip, FILE *file, const char *rowname, SCIP_VAR **linvars, SCIP_Real *linvals, int nlinvars, SCIP_QUADVARTERM *quadvarterms, int nquadvarterms, SCIP_BILINTERM *bilinterms, int nbilinterms, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed)
static void	printSosCons (SCIP *scip, FILE *file, const char *rowname, SCIP_VAR **vars, SCIP_Real *weights, int nvars, int type)
static SCIP_RETCODE	printSOCCons (SCIP *scip, FILE *file, const char *rowname, SCIP_CONS *cons)
static SCIP_RETCODE	printAndCons (SCIP *scip, FILE *file, const char *consname, SCIP_CONS *cons, SCIP_Bool aggrlinearizationands, SCIP_Bool transformed)
static SCIP_RETCODE	collectAggregatedVars (SCIP *scip, SCIP_VAR **vars, int nvars, SCIP_VAR ***aggvars, int *naggvars, int *saggvars, SCIP_HASHTABLE *varAggregated)
static SCIP_RETCODE	printAggregatedCons (SCIP *scip, FILE *file, SCIP_Bool transformed, int nvars, int nAggregatedVars, SCIP_VAR **aggregatedVars)
static void	checkVarnames (SCIP *scip, SCIP_VAR **vars, int nvars)
static void	checkConsnames (SCIP *scip, SCIP_CONS **conss, int nconss, SCIP_Bool transformed)
static	SCIP_DECL_READERCOPY (readerCopyLp)
static	SCIP_DECL_READERFREE (readerFreeLp)
static	SCIP_DECL_READERREAD (readerReadLp)
static	SCIP_DECL_READERWRITE (readerWriteLp)
SCIP_RETCODE	SCIPincludeReaderLp (SCIP *scip)
SCIP_RETCODE	SCIPreadLp (SCIP *scip, SCIP_READER *reader, const char *filename, SCIP_RESULT *result)
SCIP_RETCODE	SCIPwriteLp (SCIP *scip, 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_CONS **conss, int nconss, SCIP_RESULT *result)

Variables
static const char	commentchars [] = "\\"

Macro Definition Documentation

#define READER_NAME   "lpreader"

Definition at line 54 of file reader_lp.c.

Referenced by SCIP_DECL_READERCOPY(), SCIP_DECL_READERFREE(), SCIP_DECL_READERWRITE(), SCIPincludeReaderLp(), and SCIPwriteLp().

#define READER_DESC   "file reader for MIPs in IBM CPLEX's LP file format"

Definition at line 55 of file reader_lp.c.

Referenced by SCIPincludeReaderLp().

#define READER_EXTENSION   "lp"

Definition at line 56 of file reader_lp.c.

Referenced by SCIPincludeReaderLp().

#define DEFAULT_LINEARIZE_ANDS   TRUE

Should possible "and"-constraints be linearized when writing the lp file?

Definition at line 58 of file reader_lp.c.

Referenced by SCIPincludeReaderLp(), and SCIPwriteLp().

#define DEFAULT_AGGRLINEARIZATION_ANDS   TRUE

Should an aggregated linearization for and constraints be used?

Definition at line 59 of file reader_lp.c.

Referenced by SCIPincludeReaderLp(), and SCIPwriteLp().

#define LP_MAX_LINELEN   65536

Definition at line 65 of file reader_lp.c.

Referenced by createIndicatorConstraint(), getNextLine(), getNextToken(), isNewSection(), readCoefficients(), readConstraints(), readObjective(), and SCIPreadLp().

#define LP_MAX_PUSHEDTOKENS   2

Definition at line 66 of file reader_lp.c.

Referenced by pushBufferToken(), pushToken(), and SCIPreadLp().

#define LP_INIT_COEFSSIZE   8192

Definition at line 67 of file reader_lp.c.

Referenced by readCoefficients().

#define LP_INIT_QUADCOEFSSIZE   16

Definition at line 68 of file reader_lp.c.

Referenced by readCoefficients().

#define LP_MAX_PRINTLEN   561

the maximum length of any line is 560 + '\0' = 561

Definition at line 69 of file reader_lp.c.

Referenced by appendLine(), printRow(), printSOCCons(), printSosCons(), and SCIPwriteLp().

#define LP_MAX_NAMELEN   256

the maximum length for any name is 255 + '\0' = 256

Definition at line 70 of file reader_lp.c.

Referenced by checkConsnames(), checkVarnames(), printAggregatedCons(), printAndCons(), printRow(), printSOCCons(), printSosCons(), and SCIPwriteLp().

#define LP_PRINTLEN   100

Definition at line 71 of file reader_lp.c.

Referenced by appendLine().

Typedef Documentation

typedef enum LpSection LPSECTION

Definition at line 87 of file reader_lp.c.

typedef enum LpExpType LPEXPTYPE

Definition at line 93 of file reader_lp.c.

typedef enum LpSense LPSENSE

Definition at line 99 of file reader_lp.c.

typedef struct LpInput LPINPUT

Definition at line 126 of file reader_lp.c.

Enumeration Type Documentation

enum LpSection

Section in LP File

Enumerator
LP_START
LP_OBJECTIVE
LP_END
LP_START
LP_OBJECTIVE
LP_CONSTRAINTS
LP_BOUNDS
LP_GENERALS
LP_BINARIES
LP_SEMICONTINUOUS
LP_SOS
LP_END

Definition at line 83 of file reader_lp.c.

enum LpExpType

Enumerator
LP_EXP_NONE
LP_EXP_UNSIGNED
LP_EXP_SIGNED
LP_EXP_NONE
LP_EXP_UNSIGNED
LP_EXP_SIGNED

Definition at line 89 of file reader_lp.c.

enum LpSense

Enumerator
LP_SENSE_LE
LP_SENSE_GE
LP_SENSE_EQ
LP_SENSE_NOTHING
LP_SENSE_LE
LP_SENSE_GE
LP_SENSE_EQ

Definition at line 95 of file reader_lp.c.

Function Documentation

static void syntaxError ( SCIP *  scip, LPINPUT *  lpinput, const char *  msg  )

static

issues an error message and marks the LP data to have errors

Parameters

scip	SCIP data structure
lpinput	LP reading data
msg	error message

Definition at line 137 of file reader_lp.c.

References LP_END, NULL, SCIP_VERBLEVEL_MINIMAL, SCIPerrorMessage, SCIPsnprintf(), SCIPverbMessage(), and TRUE.

Referenced by createIndicatorConstraint(), readBinaries(), readBounds(), readCoefficients(), readConstraints(), readGenerals(), readSemicontinuous(), and readSos().

static SCIP_Bool hasError ( LPINPUT *  lpinput )

static

returns whether a syntax error was detected

Parameters

lpinput

LP reading data

Definition at line 164 of file reader_lp.c.

References NULL.

Referenced by createIndicatorConstraint(), readConstraints(), readLPFile(), and readObjective().

static SCIP_Bool isDelimChar ( char  c )

static

returns whether the given character is a token delimiter

Parameters

c	input character

Definition at line 175 of file reader_lp.c.

References FALSE, and TRUE.

Referenced by getNextToken().

static SCIP_Bool isTokenChar ( char  c )

static

returns whether the given character is a single token

Parameters

c	input character

Definition at line 196 of file reader_lp.c.

References FALSE, and TRUE.

Referenced by getNextToken().

static SCIP_Bool isValueChar ( char  c, char  nextc, SCIP_Bool  firstchar, SCIP_Bool *  hasdot, LPEXPTYPE *  exptype  )

static

returns whether the current character is member of a value string

Parameters

c	input character
nextc	next input character
firstchar	is the given character the first char of the token?
hasdot	pointer to update the dot flag
exptype	pointer to update the exponent type

Definition at line 220 of file reader_lp.c.

References FALSE, LP_EXP_NONE, LP_EXP_SIGNED, LP_EXP_UNSIGNED, NULL, and TRUE.

Referenced by getNextToken().

static SCIP_Bool getNextLine ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the next line from the input file into the line buffer; skips comments; returns whether a line could be read

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 264 of file reader_lp.c.

References BMSclearMemoryArray, commentchars, FALSE, LP_MAX_LINELEN, NULL, SCIPdebugMessage, SCIPfgets(), SCIPfseek(), SCIPwarningMessage(), and TRUE.

Referenced by getNextToken().

static void swapPointers ( char **  pointer1, char **  pointer2  )

static

swaps the addresses of two pointers

Parameters

pointer1	first pointer
pointer2	second pointer

Definition at line 355 of file reader_lp.c.

Referenced by getNextToken(), pushBufferToken(), pushToken(), and swapTokenBuffer().

static SCIP_Bool getNextToken ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the next token from the input file into the token buffer; returns whether a token was read

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 369 of file reader_lp.c.

References FALSE, getNextLine(), isDelimChar(), isTokenChar(), isValueChar(), LP_END, LP_EXP_NONE, LP_MAX_LINELEN, NULL, SCIP_Bool, SCIPdebugMessage, swapPointers(), and TRUE.

Referenced by createIndicatorConstraint(), isNewSection(), readBinaries(), readBounds(), readCoefficients(), readConstraints(), readGenerals(), readSemicontinuous(), readSos(), and readStart().

static void pushToken ( LPINPUT *  lpinput )

static

puts the current token on the token stack, such that it is read at the next call to getNextToken()

Parameters

lpinput

LP reading data

Definition at line 474 of file reader_lp.c.

References LP_MAX_PUSHEDTOKENS, NULL, and swapPointers().

Referenced by isNewSection(), readBounds(), readCoefficients(), readConstraints(), readSemicontinuous(), and readSos().

static void pushBufferToken ( LPINPUT *  lpinput )

static

puts the buffered token on the token stack, such that it is read at the next call to getNextToken()

Parameters

lpinput

LP reading data

Definition at line 487 of file reader_lp.c.

References LP_MAX_PUSHEDTOKENS, NULL, and swapPointers().

Referenced by readCoefficients(), readConstraints(), and readSos().

static void swapTokenBuffer ( LPINPUT *  lpinput )

static

swaps the current token with the token buffer

Parameters

lpinput

LP reading data

Definition at line 500 of file reader_lp.c.

References NULL, and swapPointers().

Referenced by isNewSection(), readCoefficients(), readConstraints(), and readSos().

static SCIP_Bool isNewSection ( SCIP *  scip, LPINPUT *  lpinput  )

static

checks whether the current token is a section identifier, and if yes, switches to the corresponding section

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 511 of file reader_lp.c.

References FALSE, getNextToken(), LP_BINARIES, LP_BOUNDS, LP_CONSTRAINTS, LP_END, LP_GENERALS, LP_MAX_LINELEN, LP_OBJECTIVE, LP_SEMICONTINUOUS, LP_SOS, NULL, pushToken(), SCIP_Bool, SCIP_OBJSENSE_MAXIMIZE, SCIP_OBJSENSE_MINIMIZE, SCIPdebugMessage, swapTokenBuffer(), and TRUE.

Referenced by readBinaries(), readBounds(), readCoefficients(), readConstraints(), readGenerals(), readSemicontinuous(), readSos(), and readStart().

static SCIP_Bool isSign ( LPINPUT *  lpinput, int *  sign  )

static

returns whether the current token is a sign

Parameters

lpinput	LP reading data
sign	pointer to update the sign

Definition at line 722 of file reader_lp.c.

References FALSE, NULL, and TRUE.

Referenced by createIndicatorConstraint(), readBounds(), readCoefficients(), and readConstraints().

static SCIP_Bool isValue ( SCIP *  scip, LPINPUT *  lpinput, SCIP_Real *  value  )

static

returns whether the current token is a value

Parameters

scip	SCIP data structure
lpinput	LP reading data
value	pointer to store the value (unchanged, if token is no value)

Definition at line 747 of file reader_lp.c.

References FALSE, NULL, SCIPinfinity(), and TRUE.

Referenced by createIndicatorConstraint(), readBounds(), readCoefficients(), readConstraints(), and readSos().

static SCIP_Bool isSense ( LPINPUT *  lpinput, LPSENSE *  sense  )

static

returns whether the current token is an equation sense

Parameters

lpinput	LP reading data
sense	pointer to store the equation sense, or NULL

Definition at line 779 of file reader_lp.c.

References FALSE, LP_SENSE_EQ, LP_SENSE_GE, LP_SENSE_LE, NULL, and TRUE.

Referenced by createIndicatorConstraint(), readBounds(), readCoefficients(), and readConstraints().

static SCIP_RETCODE getVariable ( SCIP *  scip, char *  name, SCIP_VAR **  var, SCIP_Bool *  created  )

static

returns the variable with the given name, or creates a new variable if it does not exist

Parameters

scip	SCIP data structure
name	name of the variable
var	pointer to store the variable
created	pointer to store whether a new variable was created, or NULL

Definition at line 810 of file reader_lp.c.

References FALSE, NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_VARTYPE_CONTINUOUS, SCIPaddVar(), SCIPcreateVar(), SCIPdebugMessage, SCIPfindVar(), SCIPgetBoolParam(), SCIPinfinity(), SCIPreleaseVar(), and TRUE.

Referenced by readBinaries(), readBounds(), readCoefficients(), readGenerals(), and readSemicontinuous().

static SCIP_RETCODE readStart ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the header of the file

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 855 of file reader_lp.c.

References getNextToken(), isNewSection(), NULL, and SCIP_OKAY.

Referenced by readLPFile().

static SCIP_RETCODE readCoefficients ( SCIP *  scip, LPINPUT *  lpinput, SCIP_Bool  isobjective, char *  name, SCIP_VAR ***  vars, SCIP_Real **  coefs, int *  ncoefs, SCIP_VAR ***  quadvars1, SCIP_VAR ***  quadvars2, SCIP_Real **  quadcoefs, int *  nquadcoefs, SCIP_Bool *  newsection  )

static

reads an objective or constraint with name and coefficients

Parameters

scip	SCIP data structure
lpinput	LP reading data
isobjective	indicates whether we are currently reading the coefficients of the objective
name	pointer to store the name of the line; must be at least of size LP_MAX_LINELEN
vars	pointer to store the array with variables (must be freed by caller)
coefs	pointer to store the array with coefficients (must be freed by caller)
ncoefs	pointer to store the number of coefficients
quadvars1	pointer to store the array with first variables in quadratic terms (must be freed by caller)
quadvars2	pointer to store the array with second variables in quadratic terms (must be freed by caller)
quadcoefs	pointer to store the array with coefficients in quadratic terms (must be freed by caller)
nquadcoefs	pointer to store the number of quadratic coefficients
newsection	pointer to store whether a new section was encountered

Definition at line 876 of file reader_lp.c.

References FALSE, getNextToken(), getVariable(), isNewSection(), isSense(), isSign(), isValue(), LP_INIT_COEFSSIZE, LP_INIT_QUADCOEFSSIZE, LP_MAX_LINELEN, MAX, NULL, pushBufferToken(), pushToken(), SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocMemoryArray, SCIPdebugMessage, SCIPisZero(), SCIPmemccpy(), SCIPreallocMemoryArray, SCIPvarGetName(), SCIPwarningMessage(), swapTokenBuffer(), syntaxError(), and TRUE.

Referenced by createIndicatorConstraint(), readConstraints(), and readObjective().

static SCIP_RETCODE readObjective ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the objective section

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 1236 of file reader_lp.c.

References FALSE, hasError(), LP_MAX_LINELEN, NULL, readCoefficients(), SCIP_Bool, SCIP_CALL, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_CONTINUOUS, SCIPaddCons(), SCIPaddVar(), SCIPchgVarObj(), SCIPconsGetName(), SCIPcreateConsQuadratic(), SCIPcreateVar(), SCIPdebugMessage, SCIPdebugPrintCons, SCIPfreeMemoryArrayNull, SCIPinfinity(), SCIPreleaseCons(), SCIPreleaseVar(), SCIPvarGetObj(), and TRUE.

Referenced by readLPFile().

static SCIP_RETCODE createIndicatorConstraint ( SCIP *  scip, LPINPUT *  lpinput, const char *  name, SCIP_VAR *  binvar, SCIP_Real  binvalue  )

static

create indicator constraint

Parameters

scip	SCIP data structure
lpinput	LP reading data
name	name of indicator constraint
binvar	binary indicator variable
binvalue	value of indicator part (0/1)

Definition at line 1319 of file reader_lp.c.

References FALSE, getNextToken(), hasError(), isSense(), isSign(), isValue(), LP_MAX_LINELEN, LP_SENSE_EQ, LP_SENSE_GE, LP_SENSE_LE, LP_SENSE_NOTHING, NULL, readCoefficients(), SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_BINARY, SCIPaddCons(), SCIPchgVarLb(), SCIPchgVarType(), SCIPchgVarUb(), SCIPcreateConsIndicator(), SCIPdebugMessage, SCIPdebugPrintCons, SCIPerrorMessage, SCIPfreeMemoryArrayNull, SCIPgetNegatedVar(), SCIPisFeasEQ(), SCIPreleaseCons(), SCIPsnprintf(), SCIPvarGetLbGlobal(), SCIPvarGetUbGlobal(), syntaxError(), and TRUE.

Referenced by readConstraints().

static SCIP_RETCODE readConstraints ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the constraints section

Read linear and indicator constraints.

The CPLEX manual says that indicator constraints are of the following form:

[constraintname:] binaryvariable = value -> linear constraint

We also accept "<->".

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 1529 of file reader_lp.c.

References createIndicatorConstraint(), FALSE, getNextToken(), hasError(), isNewSection(), isSense(), isSign(), isValue(), LP_MAX_LINELEN, LP_SENSE_EQ, LP_SENSE_GE, LP_SENSE_LE, LP_SENSE_NOTHING, NULL, pushBufferToken(), pushToken(), readCoefficients(), SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIPaddCons(), SCIPcreateConsLinear(), SCIPcreateConsQuadratic(), SCIPdebugMessage, SCIPdebugPrintCons, SCIPerrorMessage, SCIPfreeMemoryArrayNull, SCIPinfinity(), SCIPisEQ(), SCIPreleaseCons(), swapTokenBuffer(), syntaxError(), and TRUE.

Referenced by readLPFile().

static SCIP_RETCODE readBounds ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the bounds section

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 1764 of file reader_lp.c.

References getNextToken(), getVariable(), isNewSection(), isSense(), isSign(), isValue(), LP_SENSE_EQ, LP_SENSE_GE, LP_SENSE_LE, LP_SENSE_NOTHING, NULL, pushToken(), SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIPchgVarLb(), SCIPchgVarUb(), SCIPdebugMessage, SCIPerrorMessage, SCIPinfinity(), SCIPvarGetLbGlobal(), SCIPvarGetName(), SCIPvarGetUbGlobal(), sign(), and syntaxError().

Referenced by readLPFile().

static SCIP_RETCODE readGenerals ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the generals section

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 1935 of file reader_lp.c.

References getNextToken(), getVariable(), isNewSection(), NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_INTEGER, SCIPchgVarType(), SCIPisFeasIntegral(), SCIPvarGetLbGlobal(), SCIPvarGetName(), SCIPvarGetUbGlobal(), SCIPwarningMessage(), and syntaxError().

Referenced by readLPFile().

static SCIP_RETCODE readBinaries ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the binaries section

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 1980 of file reader_lp.c.

References getNextToken(), getVariable(), isNewSection(), NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_BINARY, SCIPchgVarLb(), SCIPchgVarType(), SCIPchgVarUb(), SCIPisFeasEQ(), SCIPisFeasZero(), SCIPisInfinity(), SCIPvarGetLbGlobal(), SCIPvarGetName(), SCIPvarGetUbGlobal(), SCIPwarningMessage(), and syntaxError().

Referenced by readLPFile().

static SCIP_RETCODE readSemicontinuous ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the semi-continuous section

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 2034 of file reader_lp.c.

References FALSE, getNextToken(), getVariable(), isNewSection(), NULL, pushToken(), SCIP_Bool, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_Real, SCIPaddCons(), SCIPchgVarLb(), SCIPcreateConsBounddisjunction(), SCIPdebugMessage, SCIPdebugPrintCons, SCIPreleaseCons(), SCIPsnprintf(), SCIPvarGetLbGlobal(), SCIPvarGetName(), syntaxError(), and TRUE.

Referenced by readLPFile().

static SCIP_RETCODE readSos ( SCIP *  scip, LPINPUT *  lpinput  )

static

reads the sos section

The format is as follows:

SOS <constraint name>: [S1|S2]:: {<variable name>:<weight>} ... <constraint name>: [S1|S2]:: {<variable name>:<weight>}

Parameters

scip	SCIP data structure
lpinput	LP reading data

Definition at line 2132 of file reader_lp.c.

References FALSE, getNextToken(), isNewSection(), isValue(), NULL, pushBufferToken(), pushToken(), SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_Real, SCIPABORT, SCIPaddCons(), SCIPaddVarSOS1(), SCIPaddVarSOS2(), SCIPconsGetName(), SCIPcreateConsSOS1(), SCIPcreateConsSOS2(), SCIPdebugMessage, SCIPdebugPrintCons, SCIPerrorMessage, SCIPfindVar(), SCIPmemccpy(), SCIPreleaseCons(), SCIPsnprintf(), SCIPvarGetName(), swapTokenBuffer(), syntaxError(), and TRUE.

Referenced by readLPFile().

static SCIP_RETCODE readLPFile ( SCIP *  scip, LPINPUT *  lpinput, const char *  filename  )

static

reads an LP file

Parameters

scip	SCIP data structure
lpinput	LP reading data
filename	name of the input file

Definition at line 2335 of file reader_lp.c.

References hasError(), LP_BINARIES, LP_BOUNDS, LP_CONSTRAINTS, LP_END, LP_GENERALS, LP_OBJECTIVE, LP_SEMICONTINUOUS, LP_SOS, LP_START, NULL, readBinaries(), readBounds(), readConstraints(), readGenerals(), readObjective(), readSemicontinuous(), readSos(), readStart(), SCIP_CALL, SCIP_INVALIDDATA, SCIP_NOFILE, SCIP_OKAY, SCIPcreateProb(), SCIPerrorMessage, SCIPfclose(), SCIPfopen(), and SCIPprintSysError().

Referenced by SCIPreadLp().

static SCIP_DECL_HASHGETKEY ( hashGetKeyVar  )

static

hash key retrieval function for variables

Definition at line 2413 of file reader_lp.c.

static SCIP_DECL_HASHKEYEQ ( hashKeyEqVar  )

static

returns TRUE iff the indices of both variables are equal

Definition at line 2420 of file reader_lp.c.

References FALSE, and TRUE.

static SCIP_DECL_HASHKEYVAL ( hashKeyValVar  )

static

returns the hash value of the key

Definition at line 2429 of file reader_lp.c.

References NULL, SCIP_Bool, SCIPinfoMessage(), SCIPvarGetIndex(), SCIPvarGetName(), and SCIPvarGetProbindex().

static SCIP_RETCODE getActiveVariables ( SCIP *  scip, SCIP_VAR ***  vars, SCIP_Real **  scalars, int *  nvars, SCIP_Real *  constant, SCIP_Bool  transformed  )

static

transforms given variables, scalars, and constant to the corresponding active variables, scalars, and constant

Parameters

scip	SCIP data structure
vars	pointer to vars array to get active variables for
scalars	pointer to scalars a_1, ..., a_n in linear sum a_1*x_1 + ... + a_n*x_n + c
nvars	pointer to number of variables and values in vars and vals array
constant	pointer to constant c in linear sum a_1*x_1 + ... + a_n*x_n + c
transformed	transformed constraint?

Definition at line 2472 of file reader_lp.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPgetProbvarLinearSum(), SCIPreallocBufferArray, SCIPvarGetOrigvarSum(), and TRUE.

Referenced by printAggregatedCons(), and printQuadraticCons().

static void clearLine ( char *  linebuffer, int *  linecnt  )

static

clears the given line buffer

Parameters

linebuffer	line
linecnt	number of characters in line

Definition at line 2517 of file reader_lp.c.

References NULL.

Referenced by endLine(), printRow(), printSOCCons(), printSosCons(), and SCIPwriteLp().

static void endLine ( SCIP *  scip, FILE *  file, char *  linebuffer, int *  linecnt  )

static

ends the given line with '\0' and prints it to the given file stream

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
linebuffer	line
linecnt	number of characters in line

Definition at line 2531 of file reader_lp.c.

References clearLine(), NULL, and SCIPinfoMessage().

Referenced by appendLine(), printRow(), printSOCCons(), printSosCons(), and SCIPwriteLp().

static void appendLine ( SCIP *  scip, FILE *  file, char *  linebuffer, int *  linecnt, const char *  extension  )

static

appends extension to line and prints it to the give file stream if the line exceeded the length given in the define LP_PRINTLEN

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
linebuffer	line
linecnt	number of characters in line
extension	string to extent the line

Definition at line 2553 of file reader_lp.c.

References endLine(), LP_MAX_PRINTLEN, LP_PRINTLEN, NULL, and SCIPdebugMessage.

Referenced by printRow(), printSOCCons(), printSosCons(), and SCIPwriteLp().

static void printRow ( SCIP *  scip, FILE *  file, const char *  rowname, const char *  rownameextension, const char *  type, SCIP_VAR **  linvars, SCIP_Real *  linvals, int  nlinvars, SCIP_QUADVARTERM *  quadvarterms, int  nquadvarterms, SCIP_BILINTERM *  bilinterms, int  nbilinterms, SCIP_Real  rhs  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
rownameextension	row name extension
type	row type ("=", "<=", or ">=")
linvars	array of linear variables
linvals	array of linear coefficient values
nlinvars	number of linear variables
quadvarterms	quadratic variable terms
nquadvarterms	number of quadratic variable terms
bilinterms	bilinear terms
nbilinterms	number of bilinear terms
rhs	right hand side

Definition at line 2584 of file reader_lp.c.

References appendLine(), clearLine(), endLine(), LP_MAX_NAMELEN, LP_MAX_PRINTLEN, NULL, SCIPisZero(), SCIPsnprintf(), and SCIPvarGetName().

Referenced by printAggregatedCons(), and printQuadraticCons().

static SCIP_RETCODE printQuadraticCons ( SCIP *  scip, FILE *  file, const char *  rowname, SCIP_VAR **  linvars, SCIP_Real *  linvals, int  nlinvars, SCIP_QUADVARTERM *  quadvarterms, int  nquadvarterms, SCIP_BILINTERM *  bilinterms, int  nbilinterms, SCIP_Real  lhs, SCIP_Real  rhs, SCIP_Bool  transformed  )

static

prints given (linear or) quadratic constraint information in LP format to file stream

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	name of the row
linvars	array of linear variables
linvals	array of linear coefficients values (or NULL if all linear coefficient values are 1)
nlinvars	number of linear variables
quadvarterms	quadratic variable terms
nquadvarterms	number of quadratic variable terms
bilinterms	bilinear terms
nbilinterms	number of bilinear terms
lhs	left hand side
rhs	right hand side
transformed	transformed constraint?

Definition at line 2719 of file reader_lp.c.

References getActiveVariables(), NULL, printRow(), SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPduplicateBufferArray, SCIPfreeBufferArray, SCIPisEQ(), and SCIPisInfinity().

Referenced by printAndCons(), and SCIPwriteLp().

static void printSosCons ( SCIP *  scip, FILE *  file, const char *  rowname, SCIP_VAR **  vars, SCIP_Real *  weights, int  nvars, int  type  )

static

prints given SOS constraint information in LP format to file stream

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	name of the row
vars	array of variables
weights	array of weight values (or NULL)
nvars	number of variables
type	SOS type (SOS1 or SOS2)

Definition at line 2818 of file reader_lp.c.

References appendLine(), clearLine(), endLine(), LP_MAX_NAMELEN, LP_MAX_PRINTLEN, NULL, SCIPsnprintf(), and SCIPvarGetName().

Referenced by SCIPwriteLp().

static SCIP_RETCODE printSOCCons ( SCIP *  scip, FILE *  file, const char *  rowname, SCIP_CONS *  cons  )

static

prints given soc constraint in LP format to file stream

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	name of the row
cons	second order cone constraint

Definition at line 2877 of file reader_lp.c.

References appendLine(), clearLine(), endLine(), LP_MAX_NAMELEN, LP_MAX_PRINTLEN, NULL, SCIP_OKAY, SCIP_Real, SCIPgetLhsCoefsSOC(), SCIPgetLhsConstantSOC(), SCIPgetLhsOffsetsSOC(), SCIPgetLhsVarsSOC(), SCIPgetNLhsVarsSOC(), SCIPgetRhsCoefSOC(), SCIPgetRhsOffsetSOC(), SCIPgetRhsVarSOC(), SCIPisZero(), SCIPsnprintf(), and SCIPvarGetName().

Referenced by SCIPwriteLp().

static SCIP_RETCODE printAndCons ( SCIP *  scip, FILE *  file, const char *  consname, SCIP_CONS *  cons, SCIP_Bool  aggrlinearizationands, SCIP_Bool  transformed  )

static

prints a linearization of an and-constraint into the given file

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
consname	name of the constraint
cons	and constraint
aggrlinearizationands	print weak or strong realaxation
transformed	transformed constraint?

Definition at line 3027 of file reader_lp.c.

References LP_MAX_NAMELEN, NULL, printQuadraticCons(), SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPfreeBufferArray, SCIPgetNVarsAnd(), SCIPgetResultantAnd(), SCIPgetVarsAnd(), SCIPinfinity(), and SCIPsnprintf().

Referenced by SCIPwriteLp().

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 3114 of file reader_lp.c.

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

Referenced by SCIPwriteLp().

static SCIP_RETCODE printAggregatedCons ( SCIP *  scip, FILE *  file, SCIP_Bool  transformed, int  nvars, int  nAggregatedVars, SCIP_VAR **  aggregatedVars  )

static

print aggregated variable-constraints

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
transformed	TRUE iff problem is the transformed problem
nvars	number of active variables in the problem
nAggregatedVars	number of aggregated variables
aggregatedVars	array storing the aggregated variables

Definition at line 3170 of file reader_lp.c.

References getActiveVariables(), LP_MAX_NAMELEN, NULL, printRow(), SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPfreeBufferArray, SCIPsnprintf(), and SCIPvarGetName().

Referenced by SCIPwriteLp().

static void checkVarnames ( SCIP *  scip, SCIP_VAR **  vars, int  nvars  )

static

method check if the variable names are not longer than LP_MAX_NAMELEN

Parameters

scip	SCIP data structure
vars	array of variables
nvars	number of variables

Definition at line 3223 of file reader_lp.c.

References FALSE, LP_MAX_NAMELEN, NULL, SCIP_Bool, SCIPvarGetName(), SCIPwarningMessage(), and TRUE.

Referenced by SCIPwriteLp().

static void checkConsnames ( SCIP *  scip, SCIP_CONS **  conss, int  nconss, SCIP_Bool  transformed  )

static

method check if the constraint names are not longer than LP_MAX_NAMELEN

Parameters

scip	SCIP data structure
conss	array of constraints
nconss	number of constraints
transformed	TRUE iff problem is the transformed problem

Definition at line 3260 of file reader_lp.c.

References FALSE, LP_MAX_NAMELEN, NULL, SCIP_Bool, SCIP_Real, SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetName(), SCIPconsIsEnabled(), SCIPconsIsTransformed(), SCIPgetLhsLinear(), SCIPisEQ(), SCIPwarningMessage(), and TRUE.

Referenced by SCIPwriteLp().

static SCIP_DECL_READERCOPY ( readerCopyLp  )

static

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

Definition at line 3331 of file reader_lp.c.

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

static SCIP_DECL_READERFREE ( readerFreeLp  )

static

destructor of reader to free user data (called when SCIP is exiting)

Definition at line 3345 of file reader_lp.c.

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

static SCIP_DECL_READERREAD ( readerReadLp  )

static

problem reading method of reader

Definition at line 3359 of file reader_lp.c.

References SCIP_CALL, SCIP_OKAY, and SCIPreadLp().

static SCIP_DECL_READERWRITE ( readerWriteLp  )

static

problem writing method of reader

Definition at line 3370 of file reader_lp.c.

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

SCIP_RETCODE SCIPincludeReaderLp

(

SCIP *

scip

)

includes the lp file reader in SCIP

Parameters

scip	SCIP data structure

Definition at line 3387 of file reader_lp.c.

References DEFAULT_AGGRLINEARIZATION_ANDS, DEFAULT_LINEARIZE_ANDS, NULL, READER_DESC, READER_EXTENSION, READER_NAME, SCIP_CALL, SCIP_OKAY, SCIPaddBoolParam(), SCIPallocMemory, SCIPincludeReaderBasic(), SCIPsetReaderCopy(), SCIPsetReaderFree(), SCIPsetReaderRead(), SCIPsetReaderWrite(), and TRUE.

Referenced by SCIP_DECL_READERCOPY(), and SCIPincludeDefaultPlugins().

SCIP_RETCODE SCIPreadLp	(	SCIP *	scip,
		SCIP_READER *	reader,
		const char *	filename,
		SCIP_RESULT *	result
	)

reads problem from file

Parameters

scip	SCIP data structure
reader	the file reader itself
filename	full path and name of file to read, or NULL if stdin should be used
result	pointer to store the result of the file reading call

Definition at line 3421 of file reader_lp.c.

References FALSE, LP_MAX_LINELEN, LP_MAX_PUSHEDTOKENS, LP_START, NULL, readLPFile(), SCIP_CALL, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_READERROR, SCIP_SUCCESS, SCIPallocMemoryArray, SCIPfreeMemoryArray, SCIPgetBoolParam(), and SCIPsetObjsense().

Referenced by SCIP_DECL_READERREAD().

SCIP_RETCODE SCIPwriteLp	(	SCIP *	scip,
		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_CONS **	conss,
		int	nconss,
		SCIP_RESULT *	result
	)

writes problem to file

Parameters

scip	SCIP data structure
file	output file, or NULL if standard output should be used
name	problem name
transformed	TRUE iff problem is the transformed problem
objsense	objective sense
objscale	scalar applied to objective function; external objective value is extobj = objsense * objscale * (intobj + objoffset)
objoffset	objective offset from bound shifting and fixing
vars	array with active variables ordered binary, integer, implicit, continuous
nvars	number of active variables in the problem
nbinvars	number of binary variables
nintvars	number of general integer variables
nimplvars	number of implicit integer variables
ncontvars	number of continuous variables
conss	array with constraints of the problem
nconss	number of constraints in the problem
result	pointer to store the result of the file writing call

Definition at line 3493 of file reader_lp.c.

References appendLine(), checkConsnames(), checkVarnames(), clearLine(), collectAggregatedVars(), DEFAULT_AGGRLINEARIZATION_ANDS, DEFAULT_LINEARIZE_ANDS, endLine(), LP_MAX_NAMELEN, LP_MAX_PRINTLEN, MAX, NULL, printAggregatedCons(), printAndCons(), printQuadraticCons(), printSOCCons(), printSosCons(), READER_NAME, SCIP_Bool, SCIP_CALL, SCIP_Longint, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIP_Real, SCIP_SETPPCTYPE_COVERING, SCIP_SETPPCTYPE_PACKING, SCIP_SETPPCTYPE_PARTITIONING, SCIP_SUCCESS, SCIP_VARSTATUS_NEGATED, SCIP_VARSTATUS_ORIGINAL, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_INTEGER, SCIPallocBlockMemoryArray, SCIPallocBufferArray, SCIPblkmem(), SCIPcalcHashtableSize(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetConss(), SCIPconshdlrGetName(), SCIPconshdlrGetNConss(), SCIPconsIsDeleted(), SCIPconsIsEnabled(), SCIPconsIsTransformed(), SCIPdebugMessage, SCIPfindConshdlr(), SCIPfindReader(), SCIPfreeBlockMemoryArray, SCIPfreeBufferArray, SCIPgetBilinTermsQuadratic(), SCIPgetBinaryVarIndicator(), SCIPgetCapacityKnapsack(), SCIPgetCoefsLinearVarsQuadratic(), SCIPgetLhsLinear(), SCIPgetLhsQuadratic(), SCIPgetLhsVarbound(), SCIPgetLhsVarsSOC(), SCIPgetLinearConsIndicator(), SCIPgetLinearVarsQuadratic(), SCIPgetNBilinTermsQuadratic(), SCIPgetNLhsVarsSOC(), SCIPgetNLinearVarsQuadratic(), SCIPgetNQuadVarTermsQuadratic(), SCIPgetNVarsKnapsack(), SCIPgetNVarsLinear(), SCIPgetNVarsLogicor(), SCIPgetNVarsSetppc(), SCIPgetNVarsSOS1(), SCIPgetNVarsSOS2(), SCIPgetQuadVarTermsQuadratic(), SCIPgetRhsLinear(), SCIPgetRhsQuadratic(), SCIPgetRhsVarbound(), SCIPgetRhsVarSOC(), SCIPgetSlackVarIndicator(), SCIPgetTypeSetppc(), SCIPgetValsLinear(), SCIPgetVarsKnapsack(), SCIPgetVarsLinear(), SCIPgetVarsLogicor(), SCIPgetVarsSetppc(), SCIPgetVarsSOS1(), SCIPgetVarsSOS2(), SCIPgetVarVarbound(), SCIPgetVbdcoefVarbound(), SCIPgetVbdvarVarbound(), SCIPgetWeightsKnapsack(), SCIPgetWeightsSOS1(), SCIPgetWeightsSOS2(), SCIPhashmapCreate(), SCIPhashmapExists(), SCIPhashmapFree(), SCIPhashmapSetImage(), SCIPhashtableCreate(), SCIPhashtableFree(), SCIPinfinity(), SCIPinfoMessage(), SCIPisFeasEQ(), SCIPisInfinity(), SCIPisZero(), SCIPprintCons(), SCIPreaderGetData(), SCIPsnprintf(), SCIPvarGetLbGlobal(), SCIPvarGetLbLocal(), SCIPvarGetLbOriginal(), SCIPvarGetName(), SCIPvarGetNegatedVar(), SCIPvarGetObj(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarGetUbGlobal(), SCIPvarGetUbLocal(), SCIPvarGetUbOriginal(), SCIPvarIsNegated(), SCIPwarningMessage(), and TRUE.

Referenced by SCIP_DECL_READERWRITE().

Variable Documentation

const char commentchars[] = "\\"

static

Definition at line 128 of file reader_lp.c.

Referenced by getNextLine().