Scippy

SCIP

Solving Constraint Integer Programs

Detailed Description

pseudo-Boolean file reader (opb format)

Author
Stefan Heinz
Michael Winkler
Dominik Kamp

This file reader parses the opb format and is also used by the wbo reader for the wbo format. For a detailed description of this format see

The syntax of the input file format can be described by a simple Backus-Naur form. <formula> is the start symbol of this grammar.

<formula>::= <sequence_of_comments> [<objective>] | [<softheader>] <sequence_of_comments_or_constraints>

<sequence_of_comments>::= <comment> [<sequence_of_comments>] <comment>::= "*" <any_sequence_of_characters_other_than_EOL> <EOL> <sequence_of_comments_or_constraints>::=<comment_or_constraint> [<sequence_of_comments_or_constraints>] <comment_or_constraint>::=<comment>|<constraint>

<objective>::= "min:" <zeroOrMoreSpace> <sum> ";" <constraint>::= <sum> <relational_operator> <zeroOrMoreSpace> <integer> <zeroOrMoreSpace> ";"

<sum>::= <weightedterm> | <weightedterm> <sum> <weightedterm>::= <integer> <oneOrMoreSpace> <term> <oneOrMoreSpace>

<integer>::= <unsigned_integer> | "+" <unsigned_integer> | "-" <unsigned_integer> <unsigned_integer>::= <digit> | <digit><unsigned_integer>

<relational_operator>::= "\>=" | "="

<variablename>::= "x" <unsigned_integer>

<oneOrMoreSpace>::= " " [<oneOrMoreSpace>] <zeroOrMoreSpace>::= [" " <zeroOrMoreSpace>]

For linear pseudo-Boolean instances, <term> is defined as

<term>::=<variablename>

For non-linear instances, <term> is defined as

<term>::= <oneOrMoreLiterals> <oneOrMoreLiterals>::= <literal> | <literal> <oneOrMoreSpace> <oneOrMoreLiterals> <literal>::= <variablename> | "~"<variablename>

For wbo-files are the following additional/changed things possible.

<softheader>::= "soft:" [<unsigned integer>] ";"

<comment_or_constraint>::=<comment>|<constraint>|<softconstraint>

<softconstraint>::= "[" <zeroOrMoreSpace> <unsigned integer> <zeroOrMoreSpace> "]" <constraint>

Definition in file reader_opb.c.

#include "blockmemshell/memory.h"
#include <ctype.h>
#include "scip/cons_and.h"
#include "scip/cons_indicator.h"
#include "scip/cons_knapsack.h"
#include "scip/cons_linear.h"
#include "scip/cons_logicor.h"
#include "scip/cons_pseudoboolean.h"
#include "scip/cons_setppc.h"
#include "scip/cons_varbound.h"
#include "scip/debug.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_opb.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>
#include <strings.h>

Go to the source code of this file.

Macros

#define READER_NAME   "opbreader"
 
#define READER_DESC   "file reader for pseudo-Boolean problem in opb format"
 
#define READER_EXTENSION   "opb"
 
#define GENCONSNAMES   TRUE /* remove if no constraint names should be generated */
 
#define LINEAROBJECTIVE
 
#define INDICATORVARNAME   "indicatorvar" /* standard part of name for all indicator variables */
 
#define INDICATORSLACKVARNAME   "indslack" /* standard part of name for all indicator slack variables; should be the same in cons_indicator */
 
#define TOPCOSTCONSNAME   "topcostcons" /* standard name for artificial topcost constraint in wbo problems */
 
#define OPB_MAX_LINELEN   65536
 
#define OPB_MAX_PUSHEDTOKENS   2
 
#define OPB_INIT_COEFSSIZE   8192
 

Typedefs

typedef enum OpbExpType OPBEXPTYPE
 
typedef enum OpbSense OPBSENSE
 
typedef struct OpbInput OPBINPUT
 

Enumerations

enum  OpbExpType {
  OPB_EXP_NONE ,
  OPB_EXP_UNSIGNED ,
  OPB_EXP_SIGNED
}
 
enum  OpbSense {
  OPB_SENSE_NOTHING ,
  OPB_SENSE_LE ,
  OPB_SENSE_GE ,
  OPB_SENSE_EQ
}
 

Functions

static void syntaxError (SCIP *scip, OPBINPUT *opbinput, const char *msg)
 
static SCIP_Bool hasError (OPBINPUT *opbinput)
 
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, OPBEXPTYPE *exptype)
 
static SCIP_Bool getNextLine (SCIP *scip, OPBINPUT *opbinput)
 
static void swapPointers (char **pointer1, char **pointer2)
 
static SCIP_Bool getNextToken (SCIP *scip, OPBINPUT *opbinput)
 
static void pushToken (OPBINPUT *opbinput)
 
static void pushBufferToken (OPBINPUT *opbinput)
 
static void swapTokenBuffer (OPBINPUT *opbinput)
 
static SCIP_Bool isEndLine (OPBINPUT *opbinput)
 
static SCIP_Bool isSign (OPBINPUT *opbinput, int *sign)
 
static SCIP_Bool isValue (SCIP *scip, OPBINPUT *opbinput, SCIP_Real *value)
 
static SCIP_Bool isSense (OPBINPUT *opbinput, OPBSENSE *sense)
 
static SCIP_Bool isStartingSoftConstraintWeight (SCIP *scip, OPBINPUT *opbinput)
 
static SCIP_Bool isEndingSoftConstraintWeight (SCIP *scip, OPBINPUT *opbinput)
 
static SCIP_RETCODE createVariable (SCIP *scip, SCIP_VAR **var, char *name)
 
static SCIP_RETCODE getVariableOrTerm (SCIP *scip, OPBINPUT *opbinput, SCIP_VAR ***vars, int *nvars, int *varssize)
 
static SCIP_RETCODE readCoefficients (SCIP *const scip, OPBINPUT *const opbinput, char *const name, SCIP_VAR ***linvars, SCIP_Real **lincoefs, int *const nlincoefs, int *lincoefssize, SCIP_VAR ****terms, SCIP_Real **termcoefs, int **ntermvars, int *termcoefssize, int *const ntermcoefs, SCIP_Bool *const newsection, SCIP_Bool *const isNonlinear, SCIP_Bool *const issoftcons, SCIP_Real *const weight)
 
static SCIP_RETCODE setObjective (SCIP *const scip, OPBINPUT *const opbinput, const char *sense, SCIP_Real const scale, SCIP_VAR **const linvars, SCIP_Real *const coefs, int const ncoefs, SCIP_VAR ***const terms, SCIP_Real *const termcoefs, int *const ntermvars, int const ntermcoefs)
 
static SCIP_RETCODE readConstraints (SCIP *scip, OPBINPUT *opbinput, SCIP_Real objscale, int *nNonlinearConss)
 
static SCIP_RETCODE getMaxAndConsDim (SCIP *scip, OPBINPUT *opbinput, SCIP_Real *objscale, SCIP_Real *objoffset)
 
static SCIP_RETCODE readOPBFile (SCIP *scip, OPBINPUT *opbinput, const char *filename)
 
static SCIP_RETCODE getBinVarsRepresentatives (SCIP *const scip, SCIP_VAR **const vars, int const nvars, SCIP_Bool const transformed)
 
static SCIP_RETCODE getActiveVariables (SCIP *scip, SCIP_VAR **vars, SCIP_Real *scalars, int *nvars, SCIP_Real *constant, SCIP_Bool transformed)
 
static SCIP_RETCODE computeAndConstraintInfos (SCIP *const scip, SCIP_Bool const transformed, SCIP_VAR ***resvars, int *nresvars, SCIP_VAR ****andvars, int **nandvars, SCIP_Bool *const existandconshdlr, SCIP_Bool *const existands)
 
static void clearBuffer (char *linebuffer, int *linecnt)
 
static void writeBuffer (SCIP *scip, FILE *file, char *linebuffer, int *linecnt)
 
static void appendBuffer (SCIP *scip, FILE *file, char *linebuffer, int *linecnt, const char *extension)
 
static SCIP_RETCODE writeOpbObjective (SCIP *const scip, FILE *const file, SCIP_VAR **const vars, int const nvars, SCIP_VAR **const resvars, int const nresvars, SCIP_VAR **const *const andvars, int const *const nandvars, SCIP_OBJSENSE const objsense, SCIP_Real const objscale, SCIP_Real const objoffset, char const *const multisymbol, SCIP_Bool const existands, SCIP_Bool const transformed)
 
static SCIP_RETCODE printNLRow (SCIP *const scip, FILE *const file, char const *const type, SCIP_VAR **const vars, SCIP_Real const *const vals, int const nvars, SCIP_Real lhs, SCIP_VAR **const resvars, int const nresvars, SCIP_VAR **const *const andvars, int const *const nandvars, SCIP_Longint weight, SCIP_Longint *const mult, char const *const multisymbol)
 
static SCIP_RETCODE printNonLinearCons (SCIP *const scip, FILE *const file, SCIP_VAR **const vars, SCIP_Real *const vals, int const nvars, SCIP_Real const lhs, SCIP_Real const rhs, SCIP_VAR **const resvars, int const nresvars, SCIP_VAR **const *const andvars, int const *const nandvars, SCIP_Longint weight, SCIP_Bool const transformed, char const *const multisymbol)
 
static SCIP_RETCODE printRow (SCIP *scip, FILE *file, const char *type, SCIP_VAR **vars, SCIP_Real *vals, int nvars, SCIP_Real lhs, SCIP_Longint weight, SCIP_Longint *mult, const char *multisymbol)
 
static SCIP_RETCODE printLinearCons (SCIP *scip, FILE *file, SCIP_VAR **vars, SCIP_Real *vals, int nvars, SCIP_Real lhs, SCIP_Real rhs, SCIP_Longint weight, SCIP_Bool transformed, const char *multisymbol)
 
static void determineTotalNumberLinearConss (SCIP *const scip, SCIP_CONS **const conss, int const nconss, int *nlinearconss, int *nindicatorconss)
 
static SCIP_RETCODE writeOpbConstraints (SCIP *const scip, FILE *const file, SCIP_CONS **const conss, int const nconss, SCIP_VAR **const vars, int const nvars, SCIP_VAR **const resvars, int const nresvars, SCIP_VAR **const *const andvars, int const *const nandvars, char const *const multisymbol, SCIP_Bool const existandconshdlr, SCIP_Bool const existands, SCIP_Bool const transformed)
 
static SCIP_RETCODE writeOpbFixedVars (SCIP *const scip, FILE *const file, SCIP_VAR **vars, int nvars, SCIP_HASHTABLE *const printedfixing, char const *const multisymbol, SCIP_Bool const transformed)
 
static SCIP_RETCODE writeOpbRelevantAnds (SCIP *const scip, FILE *const file, SCIP_VAR **const resvars, int const nresvars, SCIP_VAR **const *const andvars, int const *const nandvars, SCIP_HASHTABLE *const printedfixing, char const *const multisymbol, SCIP_Bool const transformed)
 
static SCIP_RETCODE writeOpb (SCIP *scip, FILE *file, const char *name, SCIP_Bool transformed, SCIP_OBJSENSE objsense, SCIP_Real objscale, SCIP_Real objoffset, SCIP_VAR **vars, int nvars, SCIP_CONS **conss, int nconss, SCIP_VAR **const resvars, int const nresvars, SCIP_VAR **const *const andvars, int const *const nandvars, SCIP_Bool const existandconshdlr, SCIP_Bool const existands, SCIP_RESULT *result)
 
SCIP_RETCODE SCIPreadOpb (SCIP *scip, SCIP_READER *reader, const char *filename, SCIP_RESULT *result)
 
SCIP_RETCODE SCIPwriteOpb (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_VAR **fixedvars, int nfixedvars, SCIP_CONS **conss, int nconss, SCIP_Bool genericnames, SCIP_RESULT *result)
 
static SCIP_DECL_READERCOPY (readerCopyOpb)
 
static SCIP_DECL_READERREAD (readerReadOpb)
 
static SCIP_DECL_READERWRITE (readerWriteOpb)
 
SCIP_RETCODE SCIPincludeReaderOpb (SCIP *scip)
 

Variables

static const char commentchars [] = "*"
 

Macro Definition Documentation

◆ READER_NAME

#define READER_NAME   "opbreader"

Definition at line 126 of file reader_opb.c.

◆ READER_DESC

#define READER_DESC   "file reader for pseudo-Boolean problem in opb format"

Definition at line 127 of file reader_opb.c.

◆ READER_EXTENSION

#define READER_EXTENSION   "opb"

Definition at line 128 of file reader_opb.c.

◆ GENCONSNAMES

#define GENCONSNAMES   TRUE /* remove if no constraint names should be generated */

Definition at line 130 of file reader_opb.c.

◆ LINEAROBJECTIVE

#define LINEAROBJECTIVE
Value:
TRUE /* will all non-linear parts inside the objective function be linearized or will
* an artificial integer variable be created which will represent the objective
* function
*/
#define TRUE
Definition: def.h:93

Definition at line 131 of file reader_opb.c.

◆ INDICATORVARNAME

#define INDICATORVARNAME   "indicatorvar" /* standard part of name for all indicator variables */

Definition at line 133 of file reader_opb.c.

◆ INDICATORSLACKVARNAME

#define INDICATORSLACKVARNAME   "indslack" /* standard part of name for all indicator slack variables; should be the same in cons_indicator */

Definition at line 134 of file reader_opb.c.

◆ TOPCOSTCONSNAME

#define TOPCOSTCONSNAME   "topcostcons" /* standard name for artificial topcost constraint in wbo problems */

Definition at line 135 of file reader_opb.c.

◆ OPB_MAX_LINELEN

#define OPB_MAX_LINELEN   65536

size of the line buffer for reading or writing

Definition at line 140 of file reader_opb.c.

◆ OPB_MAX_PUSHEDTOKENS

#define OPB_MAX_PUSHEDTOKENS   2

Definition at line 141 of file reader_opb.c.

◆ OPB_INIT_COEFSSIZE

#define OPB_INIT_COEFSSIZE   8192

Definition at line 142 of file reader_opb.c.

Typedef Documentation

◆ OPBEXPTYPE

typedef enum OpbExpType OPBEXPTYPE

Definition at line 151 of file reader_opb.c.

◆ OPBSENSE

typedef enum OpbSense OPBSENSE

Definition at line 160 of file reader_opb.c.

◆ OPBINPUT

typedef struct OpbInput OPBINPUT

Definition at line 186 of file reader_opb.c.

Enumeration Type Documentation

◆ OpbExpType

enum OpbExpType

Section in OPB File

Enumerator
OPB_EXP_NONE 
OPB_EXP_UNSIGNED 
OPB_EXP_SIGNED 

Definition at line 145 of file reader_opb.c.

◆ OpbSense

enum OpbSense
Enumerator
OPB_SENSE_NOTHING 
OPB_SENSE_LE 
OPB_SENSE_GE 
OPB_SENSE_EQ 

Definition at line 153 of file reader_opb.c.

Function Documentation

◆ syntaxError()

static void syntaxError ( SCIP scip,
OPBINPUT opbinput,
const char *  msg 
)
static

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

Parameters
scipSCIP data structure
opbinputOPB reading data
msgerror message

Definition at line 195 of file reader_opb.c.

References NULL, SCIPerrorMessage, and TRUE.

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

◆ hasError()

static SCIP_Bool hasError ( OPBINPUT opbinput)
static

returns whether a syntax error was detected

Parameters
opbinputOPB reading data

Definition at line 219 of file reader_opb.c.

References NULL.

Referenced by readCoefficients(), readConstraints(), readOPBFile(), and setObjective().

◆ isDelimChar()

static SCIP_Bool isDelimChar ( char  c)
static

returns whether the given character is a token delimiter

Parameters
cinput character

Definition at line 230 of file reader_opb.c.

References FALSE, and TRUE.

Referenced by getNextToken().

◆ isTokenChar()

static SCIP_Bool isTokenChar ( char  c)
static

returns whether the given character is a single token

Parameters
cinput character

Definition at line 251 of file reader_opb.c.

References FALSE, and TRUE.

Referenced by getNextToken(), and getVariableOrTerm().

◆ isValueChar()

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

returns whether the current character is member of a value string

Parameters
cinput character
nextcnext input character
firstcharis the given character the first char of the token?
hasdotpointer to update the dot flag
exptypepointer to update the exponent type

Definition at line 274 of file reader_opb.c.

References FALSE, NULL, OPB_EXP_NONE, OPB_EXP_SIGNED, OPB_EXP_UNSIGNED, and TRUE.

Referenced by getNextToken().

◆ getNextLine()

static SCIP_Bool getNextLine ( SCIP scip,
OPBINPUT opbinput 
)
static

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

Parameters
scipSCIP data structure
opbinputOPB reading data

Definition at line 318 of file reader_opb.c.

References commentchars, FALSE, NULL, SCIP_CALL_ABORT, SCIPcalcMemGrowSize(), SCIPdebugMsg, SCIPfgets(), SCIPreallocBlockMemoryArray, and TRUE.

Referenced by getNextToken().

◆ swapPointers()

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

swaps the addresses of two pointers

Parameters
pointer1first pointer
pointer2second pointer

Definition at line 373 of file reader_opb.c.

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

◆ getNextToken()

static SCIP_Bool getNextToken ( SCIP scip,
OPBINPUT opbinput 
)
static

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

Parameters
scipSCIP data structure
opbinputOPB reading data

Definition at line 387 of file reader_opb.c.

References FALSE, getNextLine(), isDelimChar(), isTokenChar(), isValueChar(), NULL, OPB_EXP_NONE, OPB_MAX_LINELEN, SCIP_Bool, SCIPdebugMsg, swapPointers(), and TRUE.

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

◆ pushToken()

static void pushToken ( OPBINPUT opbinput)
static

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

Parameters
opbinputOPB reading data

Definition at line 488 of file reader_opb.c.

References NULL, OPB_MAX_PUSHEDTOKENS, and swapPointers().

Referenced by getVariableOrTerm(), and readCoefficients().

◆ pushBufferToken()

static void pushBufferToken ( OPBINPUT opbinput)
static

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

Parameters
opbinputOPB reading data

Definition at line 501 of file reader_opb.c.

References NULL, OPB_MAX_PUSHEDTOKENS, and swapPointers().

Referenced by readCoefficients().

◆ swapTokenBuffer()

static void swapTokenBuffer ( OPBINPUT opbinput)
static

swaps the current token with the token buffer

Parameters
opbinputOPB reading data

Definition at line 514 of file reader_opb.c.

References NULL, and swapPointers().

Referenced by readCoefficients().

◆ isEndLine()

static SCIP_Bool isEndLine ( OPBINPUT opbinput)
static

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

Parameters
opbinputOPB reading data

Definition at line 525 of file reader_opb.c.

References FALSE, NULL, and TRUE.

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

◆ isSign()

static SCIP_Bool isSign ( OPBINPUT opbinput,
int *  sign 
)
static

returns whether the current token is a sign

Parameters
opbinputOPB reading data
signpointer to update the sign

Definition at line 539 of file reader_opb.c.

References FALSE, NULL, and TRUE.

Referenced by readCoefficients(), and readConstraints().

◆ isValue()

static SCIP_Bool isValue ( SCIP scip,
OPBINPUT opbinput,
SCIP_Real value 
)
static

returns whether the current token is a value

Parameters
scipSCIP data structure
opbinputOPB reading data
valuepointer to store the value (unchanged, if token is no value)

Definition at line 566 of file reader_opb.c.

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

Referenced by readCoefficients(), and readConstraints().

◆ isSense()

static SCIP_Bool isSense ( OPBINPUT opbinput,
OPBSENSE sense 
)
static

returns whether the current token is an equation sense

Parameters
opbinputOPB reading data
sensepointer to store the equation sense, or NULL

Definition at line 600 of file reader_opb.c.

References FALSE, NULL, OPB_SENSE_EQ, OPB_SENSE_GE, OPB_SENSE_LE, and TRUE.

Referenced by readCoefficients(), and readConstraints().

◆ isStartingSoftConstraintWeight()

static SCIP_Bool isStartingSoftConstraintWeight ( SCIP scip,
OPBINPUT opbinput 
)
static

returns whether the current token is a value

Parameters
scipSCIP data structure
opbinputOPB reading data

Definition at line 631 of file reader_opb.c.

References FALSE, NULL, and TRUE.

Referenced by readCoefficients().

◆ isEndingSoftConstraintWeight()

static SCIP_Bool isEndingSoftConstraintWeight ( SCIP scip,
OPBINPUT opbinput 
)
static

returns whether the current token is a value

Parameters
scipSCIP data structure
opbinputOPB reading data

Definition at line 647 of file reader_opb.c.

References FALSE, NULL, and TRUE.

Referenced by readCoefficients().

◆ createVariable()

static SCIP_RETCODE createVariable ( SCIP scip,
SCIP_VAR **  var,
char *  name 
)
static

create binary variable with given name

Parameters
scipSCIP data structure
varpointer to store the variable
namename for the variable

Definition at line 663 of file reader_opb.c.

References NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_VARTYPE_BINARY, SCIPaddVar(), SCIPcreateVar(), SCIPdebugMsg, SCIPgetBoolParam(), and SCIPreleaseVar().

Referenced by getVariableOrTerm(), and readConstraints().

◆ getVariableOrTerm()

static SCIP_RETCODE getVariableOrTerm ( SCIP scip,
OPBINPUT opbinput,
SCIP_VAR ***  vars,
int *  nvars,
int *  varssize 
)
static

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

Parameters
scipSCIP data structure
opbinputOPB reading data
varspointer to store the variables
nvarspointer to store the number of variables
varssizepointer to store the varsize, if changed (should already be initialized)

Definition at line 695 of file reader_opb.c.

References createVariable(), FALSE, getNextToken(), isTokenChar(), NULL, pushToken(), SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIPcalcMemGrowSize(), SCIPfindVar(), SCIPgetNegatedVar(), SCIPreallocBufferArray, syntaxError(), and TRUE.

Referenced by readCoefficients().

◆ readCoefficients()

static SCIP_RETCODE readCoefficients ( SCIP *const  scip,
OPBINPUT *const  opbinput,
char *const  name,
SCIP_VAR ***  linvars,
SCIP_Real **  lincoefs,
int *const  nlincoefs,
int *  lincoefssize,
SCIP_VAR ****  terms,
SCIP_Real **  termcoefs,
int **  ntermvars,
int *  termcoefssize,
int *const  ntermcoefs,
SCIP_Bool *const  newsection,
SCIP_Bool *const  isNonlinear,
SCIP_Bool *const  issoftcons,
SCIP_Real *const  weight 
)
static

reads an objective or constraint with name and coefficients

Parameters
scipSCIP data structure
opbinputOPB reading data
namepointer to store the name of the line; must be at least of size OPB_MAX_LINELEN
linvarspointer to store the array with linear variables (must be freed by caller)
lincoefspointer to store the array with linear coefficients (must be freed by caller)
nlincoefspointer to store the number of linear coefficients
lincoefssizepointer to store the size of linvars/lincoefs arrays
termspointer to store the array with nonlinear variables (must be freed by caller)
termcoefspointer to store the array with nonlinear coefficients (must be freed by caller)
ntermvarspointer to store the number of nonlinear variables in the terms (must be freed by caller)
termcoefssizepointer to store the size of terms/termcoefs
ntermcoefspointer to store the number of nonlinear coefficients
newsectionpointer to store whether a new section was encountered
isNonlinearpointer to store if we have a nonlinear constraint
issoftconspointer to store whether it is a soft constraint (for wbo files)
weightpointer to store the weight of the soft constraint

Definition at line 771 of file reader_opb.c.

References FALSE, getNextToken(), getVariableOrTerm(), hasError(), isEndingSoftConstraintWeight(), isEndLine(), isSense(), isSign(), isStartingSoftConstraintWeight(), isValue(), NULL, OPB_INIT_COEFSSIZE, pushBufferToken(), pushToken(), SCIP_Bool, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_Real, SCIPallocBlockMemoryArray, SCIPallocBufferArray, SCIPcalcMemGrowSize(), SCIPdebugMsg, SCIPdebugMsgPrint, SCIPfeof(), SCIPfreeBufferArray, SCIPgetNConss(), SCIPgetNVars(), SCIPisIntegral(), SCIPisZero(), SCIPmemccpy(), SCIPreallocBlockMemoryArray, SCIPvarGetName(), SCIPwarningMessage(), swapTokenBuffer(), syntaxError(), and TRUE.

Referenced by readConstraints().

◆ setObjective()

static SCIP_RETCODE setObjective ( SCIP *const  scip,
OPBINPUT *const  opbinput,
const char *  sense,
SCIP_Real const  scale,
SCIP_VAR **const  linvars,
SCIP_Real *const  coefs,
int const  ncoefs,
SCIP_VAR ***const  terms,
SCIP_Real *const  termcoefs,
int *const  ntermvars,
int const  ntermcoefs 
)
static

set the objective section

Parameters
scipSCIP data structure
opbinputOPB reading data
senseobjective sense
scaleobjective scale
linvarsarray of linear variables
coefsarray of objective values for linear variables
ncoefsnumber of coefficients for linear part
termsarray with nonlinear variables
termcoefsarray of objective values for nonlinear variables
ntermvarsnumber of nonlinear variables in the terms
ntermcoefsnumber of nonlinear coefficients

Definition at line 1136 of file reader_opb.c.

References ARTIFICIALVARNAMEPREFIX, FALSE, hasError(), isEndLine(), NULL, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OBJSENSE_MAXIMIZE, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_INTEGER, SCIPaddCons(), SCIPaddOrigObjoffset(), SCIPaddVar(), SCIPaddVarObj(), SCIPchgVarBranchPriority(), SCIPcreateConsAnd(), SCIPcreateConsPseudoboolean(), SCIPcreateVar(), SCIPdebugAddSolVal, SCIPdebugGetSolVal, SCIPdebugPrintCons, SCIPisFeasEQ(), SCIPisFeasGE(), SCIPisFeasLE(), SCIPisFeasZero(), SCIPreleaseCons(), SCIPreleaseVar(), SCIPsnprintf(), SCIPvarGetNegationVar(), SCIPvarIsNegated(), and TRUE.

Referenced by readConstraints().

◆ readConstraints()

static SCIP_RETCODE readConstraints ( SCIP scip,
OPBINPUT opbinput,
SCIP_Real  objscale,
int *  nNonlinearConss 
)
static

◆ getMaxAndConsDim()

static SCIP_RETCODE getMaxAndConsDim ( SCIP scip,
OPBINPUT opbinput,
SCIP_Real objscale,
SCIP_Real objoffset 
)
static

tries to read the first comment line which usually contains information about the max size of "and" products

Parameters
scipSCIP data structure
opbinputOPB reading data
objscalepointer to store objective scale
objoffsetpointer to store objective offset

Definition at line 1582 of file reader_opb.c.

References commentchars, delimchars, FALSE, NULL, SCIP_Bool, SCIP_CALL_ABORT, SCIP_OKAY, SCIP_READERROR, SCIPcalcMemGrowSize(), SCIPdebugMsg, SCIPfeof(), SCIPfgets(), SCIPreallocBlockMemoryArray, and TRUE.

Referenced by readOPBFile().

◆ readOPBFile()

◆ getBinVarsRepresentatives()

static SCIP_RETCODE getBinVarsRepresentatives ( SCIP *const  scip,
SCIP_VAR **const  vars,
int const  nvars,
SCIP_Bool const  transformed 
)
static

transforms given and constraint variables to the corresponding active or negated variables

Parameters
scipSCIP data structure
varsvars array to get active variables for
nvarspointer to number of variables and values in vars and vals array
transformedtransformed constraint?

Definition at line 1803 of file reader_opb.c.

References NULL, SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIPdebugMsg, SCIPgetBinvarRepresentative(), SCIPgetNegatedVar(), SCIPisEQ(), SCIPisZero(), and SCIPvarGetOrigvarSum().

Referenced by computeAndConstraintInfos().

◆ getActiveVariables()

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
scipSCIP data structure
varsvars array to get active variables for
scalarsscalars a_1, ..., a_n in linear sum a_1*x_1 + ... + a_n*x_n + c
nvarspointer to number of variables and values in vars and vals array
constantpointer to constant c in linear sum a_1*x_1 + ... + a_n*x_n + c
transformedtransformed constraint?

Definition at line 1867 of file reader_opb.c.

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

Referenced by printLinearCons(), and printNonLinearCons().

◆ computeAndConstraintInfos()

static SCIP_RETCODE computeAndConstraintInfos ( SCIP *const  scip,
SCIP_Bool const  transformed,
SCIP_VAR ***  resvars,
int *  nresvars,
SCIP_VAR ****  andvars,
int **  nandvars,
SCIP_Bool *const  existandconshdlr,
SCIP_Bool *const  existands 
)
static
Parameters
scipSCIP data structure
transformedtransformed problem?
resvarspointer to store all resultant variables
nresvarspointer to store the number of all resultant variables
andvarspointer to store to all resultant variables their corresponding active( or negated) and-constraint variables
nandvarspointer to store the number of all corresponding and-variables to their corresponding resultant variable
existandconshdlrpointer to store whether the and-constrainthandler exists
existandspointer to store if their exists some and-constraints

Definition at line 1912 of file reader_opb.c.

References a, FALSE, getBinVarsRepresentatives(), NULL, r, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPallocBufferArray, SCIPallocMemoryArray, SCIPconsGetHdlr(), SCIPconshdlrGetConss(), SCIPconshdlrGetName(), SCIPconshdlrGetNConss(), SCIPdebug, SCIPdebugMsg, SCIPduplicateMemoryArray, SCIPfindConshdlr(), SCIPfreeBufferArray, SCIPgetNOrigConss(), SCIPgetNVarsAnd(), SCIPgetOrigConss(), SCIPgetResultantAnd(), SCIPgetVarsAnd(), SCIPprintVar(), SCIPreallocMemoryArray, SCIPsortedvecFindPtr(), SCIPsortPtrPtrInt(), SCIPwarningMessage(), and TRUE.

◆ clearBuffer()

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

clears the given line buffer

Parameters
linebufferline
linecntnumber of characters in line

Definition at line 2116 of file reader_opb.c.

References NULL.

Referenced by printNLRow(), printRow(), writeBuffer(), writeOpbFixedVars(), writeOpbObjective(), and writeOpbRelevantAnds().

◆ writeBuffer()

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

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

Parameters
scipSCIP data structure
fileoutput file (or NULL for standard output)
linebufferline
linecntnumber of characters in line

Definition at line 2131 of file reader_opb.c.

References clearBuffer(), NULL, OPB_MAX_LINELEN, and SCIPinfoMessage().

Referenced by appendBuffer(), printNLRow(), printRow(), writeOpbFixedVars(), writeOpbObjective(), and writeOpbRelevantAnds().

◆ appendBuffer()

static void appendBuffer ( 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 buffer get full

Parameters
scipSCIP data structure
fileoutput file (or NULL for standard output)
linebufferline buffer
linecntnumber of characters in line
extensionstring to extent the line

Definition at line 2154 of file reader_opb.c.

References NULL, OPB_MAX_LINELEN, and writeBuffer().

Referenced by printNLRow(), printRow(), writeOpbFixedVars(), writeOpbObjective(), and writeOpbRelevantAnds().

◆ writeOpbObjective()

static SCIP_RETCODE writeOpbObjective ( SCIP *const  scip,
FILE *const  file,
SCIP_VAR **const  vars,
int const  nvars,
SCIP_VAR **const  resvars,
int const  nresvars,
SCIP_VAR **const *const  andvars,
int const *const  nandvars,
SCIP_OBJSENSE const  objsense,
SCIP_Real const  objscale,
SCIP_Real const  objoffset,
char const *const  multisymbol,
SCIP_Bool const  existands,
SCIP_Bool const  transformed 
)
static

write objective function

Parameters
scipSCIP data structure
fileoutput file, or NULL if standard output should be used
varsarray with active (binary) variables
nvarsnumber of active variables in the problem
resvarsarray of resultant variables
nresvarsnumber of resultant variables
andvarscorresponding array of and-variables
nandvarsarray of numbers of corresponding and-variables
objsenseobjective sense
objscalescalar applied to objective function; external objective value is extobj = objsense * objscale * (intobj + objoffset)
objoffsetobjective offset from bound shifting and fixing
multisymbolthe multiplication symbol to use between coefficient and variable
existandsdoes some and-constraints exist?
transformedTRUE iff problem is the transformed problem

Definition at line 2177 of file reader_opb.c.

References a, appendBuffer(), clearBuffer(), FALSE, INDICATORVARNAME, NULL, OPB_MAX_LINELEN, SCIP_Bool, SCIP_INVALIDDATA, SCIP_Longint, SCIP_LONGINT_FORMAT, SCIP_LONGINT_MAX, SCIP_OBJSENSE_MAXIMIZE, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_NEGATED, SCIP_VARSTATUS_ORIGINAL, SCIPABORT, SCIPconsGetHdlr(), SCIPconshdlrGetConss(), SCIPconshdlrGetName(), SCIPconshdlrGetNConss(), SCIPdebugMsg, SCIPerrorMessage, SCIPfindCons(), SCIPfindConshdlr(), SCIPgetCapacityKnapsack(), SCIPgetNVarsKnapsack(), SCIPgetNVarsLinear(), SCIPgetNVarsSetppc(), SCIPgetRhsLinear(), SCIPgetVarsKnapsack(), SCIPgetVarsLinear(), SCIPgetVarsSetppc(), SCIPinfoMessage(), SCIPisIntegral(), SCIPisZero(), SCIPround(), SCIPsnprintf(), SCIPsortedvecFindPtr(), SCIPvarGetIndex(), SCIPvarGetName(), SCIPvarGetNegationVar(), SCIPvarGetObj(), SCIPvarGetStatus(), SCIPvarIsNegated(), TOPCOSTCONSNAME, TRUE, w, and writeBuffer().

Referenced by writeOpb().

◆ printNLRow()

static SCIP_RETCODE printNLRow ( SCIP *const  scip,
FILE *const  file,
char const *const  type,
SCIP_VAR **const  vars,
SCIP_Real const *const  vals,
int const  nvars,
SCIP_Real  lhs,
SCIP_VAR **const  resvars,
int const  nresvars,
SCIP_VAR **const *const  andvars,
int const *const  nandvars,
SCIP_Longint  weight,
SCIP_Longint *const  mult,
char const *const  multisymbol 
)
static
Parameters
scipSCIP data structure
fileoutput file (or NULL for standard output)
typerow type ("=" or ">=")
varsarray of variables
valsarray of values
nvarsnumber of variables
lhsleft hand side
resvarsarray of resultant variables
nresvarsnumber of resultant variables
andvarscorresponding array of and-variables
nandvarsarray of numbers of corresponding and-variables
weightif we found a soft constraint this is the weight, otherwise 0
multmultiplier for the coefficients
multisymbolthe multiplication symbol to use between coefficient and variable

Definition at line 2549 of file reader_opb.c.

References a, ABS, appendBuffer(), clearBuffer(), NULL, OPB_MAX_LINELEN, SCIP_Bool, SCIP_INVALIDDATA, SCIP_Longint, SCIP_LONGINT_FORMAT, SCIP_LONGINT_MAX, SCIP_OKAY, SCIP_Real, SCIPerrorMessage, SCIPinfoMessage(), SCIPisIntegral(), SCIPisZero(), SCIPround(), SCIPsnprintf(), SCIPsortedvecFindPtr(), SCIPvarGetIndex(), SCIPvarGetName(), SCIPvarGetNegationVar(), SCIPvarIsNegated(), and writeBuffer().

Referenced by printNonLinearCons().

◆ printNonLinearCons()

static SCIP_RETCODE printNonLinearCons ( SCIP *const  scip,
FILE *const  file,
SCIP_VAR **const  vars,
SCIP_Real *const  vals,
int const  nvars,
SCIP_Real const  lhs,
SCIP_Real const  rhs,
SCIP_VAR **const  resvars,
int const  nresvars,
SCIP_VAR **const *const  andvars,
int const *const  nandvars,
SCIP_Longint  weight,
SCIP_Bool const  transformed,
char const *const  multisymbol 
)
static

prints given maybe non-linear constraint information in OPB format to file stream

Parameters
scipSCIP data structure
fileoutput file (or NULL for standard output)
varsarray of variables
valsarray of coefficients values (or NULL if all coefficient values are 1)
nvarsnumber of variables
lhsleft hand side
rhsright hand side
resvarsarray of resultant variables
nresvarsnumber of resultant variables
andvarscorresponding array of and-variables
nandvarsarray of numbers of corresponding and-variables
weightif we found a soft constraint this is the weight, otherwise 0
transformedtransformed constraint?
multisymbolthe multiplication symbol to use between coefficient and variable

Definition at line 2683 of file reader_opb.c.

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

Referenced by writeOpbConstraints().

◆ printRow()

static SCIP_RETCODE printRow ( SCIP scip,
FILE *  file,
const char *  type,
SCIP_VAR **  vars,
SCIP_Real vals,
int  nvars,
SCIP_Real  lhs,
SCIP_Longint  weight,
SCIP_Longint mult,
const char *  multisymbol 
)
static
Parameters
scipSCIP data structure
fileoutput file (or NULL for standard output)
typerow type ("=" or ">=")
varsarray of variables
valsarray of values
nvarsnumber of variables
lhsleft hand side
weightif we found a soft constraint this is the weight, otherwise 0
multmultiplier for the coefficients
multisymbolthe multiplication symbol to use between coefficient and variable

Definition at line 2786 of file reader_opb.c.

References ABS, appendBuffer(), clearBuffer(), INDICATORVARNAME, NULL, OPB_MAX_LINELEN, SCIP_Bool, SCIP_INVALIDDATA, SCIP_Longint, SCIP_LONGINT_FORMAT, SCIP_LONGINT_MAX, SCIP_OKAY, SCIP_Real, SCIPerrorMessage, SCIPinfoMessage(), SCIPisIntegral(), SCIPisZero(), SCIPround(), SCIPsnprintf(), SCIPvarGetName(), SCIPvarGetNegationVar(), SCIPvarIsNegated(), and writeBuffer().

Referenced by printLinearCons().

◆ printLinearCons()

static SCIP_RETCODE printLinearCons ( SCIP scip,
FILE *  file,
SCIP_VAR **  vars,
SCIP_Real vals,
int  nvars,
SCIP_Real  lhs,
SCIP_Real  rhs,
SCIP_Longint  weight,
SCIP_Bool  transformed,
const char *  multisymbol 
)
static

prints given linear constraint information in OPB format to file stream

Parameters
scipSCIP data structure
fileoutput file (or NULL for standard output)
varsarray of variables
valsarray of coefficients values (or NULL if all coefficient values are 1)
nvarsnumber of variables
lhsleft hand side
rhsright hand side
weightif we found a soft constraint this is the weight, otherwise 0
transformedtransformed constraint?
multisymbolthe multiplication symbol to use between coefficient and variable

Definition at line 2881 of file reader_opb.c.

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

Referenced by writeOpbConstraints().

◆ determineTotalNumberLinearConss()

static void determineTotalNumberLinearConss ( SCIP *const  scip,
SCIP_CONS **const  conss,
int const  nconss,
int *  nlinearconss,
int *  nindicatorconss 
)
static

determine total number of split linear and indicator constraints

Parameters
scipSCIP data structure
conssarray with constraints of the problem
nconssnumber of constraints in the problem
nlinearconsspointer to store the total number of split linear constraints
nindicatorconsspointer to store the total number of indicator constraints

Definition at line 2975 of file reader_opb.c.

References NULL, SCIP_Bool, SCIP_Real, SCIPconsGetHdlr(), SCIPconsGetLhs(), SCIPconsGetRhs(), SCIPconshdlrGetName(), SCIPgetIndVarPseudoboolean(), SCIPisEQ(), and SCIPisInfinity().

Referenced by writeOpb().

◆ writeOpbConstraints()

static SCIP_RETCODE writeOpbConstraints ( SCIP *const  scip,
FILE *const  file,
SCIP_CONS **const  conss,
int const  nconss,
SCIP_VAR **const  vars,
int const  nvars,
SCIP_VAR **const  resvars,
int const  nresvars,
SCIP_VAR **const *const  andvars,
int const *const  nandvars,
char const *const  multisymbol,
SCIP_Bool const  existandconshdlr,
SCIP_Bool const  existands,
SCIP_Bool const  transformed 
)
static

write constraints

Parameters
scipSCIP data structure
fileoutput file, or NULL if standard output should be used
conssarray with constraints of the problem
nconssnumber of constraints in the problem
varsarray with active (binary) variables
nvarsnumber of active variables in the problem
resvarsarray of resultant variables
nresvarsnumber of resultant variables
andvarscorresponding array of and-variables
nandvarsarray of numbers of corresponding and-variables
multisymbolthe multiplication symbol to use between coefficient and variable
existandconshdlrdoes and-constrainthandler exist?
existandsdoes some and-constraints exist?
transformedTRUE iff problem is the transformed problem

Definition at line 3053 of file reader_opb.c.

References FALSE, NULL, printLinearCons(), printNonLinearCons(), SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_Longint, SCIP_OKAY, SCIP_Real, SCIP_SETPPCTYPE_COVERING, SCIP_SETPPCTYPE_PACKING, SCIP_SETPPCTYPE_PARTITIONING, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_MULTAGGR, SCIP_VARSTATUS_NEGATED, SCIP_VARTYPE_BINARY, SCIPallocBufferArray, SCIPblkmem(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetConss(), SCIPconshdlrGetName(), SCIPconshdlrGetNConss(), SCIPconsIsEnabled(), SCIPconsIsTransformed(), SCIPduplicateBufferArray, SCIPerrorMessage, SCIPfindConshdlr(), SCIPfreeBufferArray, SCIPgetBinaryVarIndicator(), SCIPgetCapacityKnapsack(), SCIPgetIndVarPseudoboolean(), SCIPgetLhsLinear(), SCIPgetLhsVarbound(), SCIPgetLinearConsIndicator(), SCIPgetLinearConsPseudoboolean(), SCIPgetNVarsKnapsack(), SCIPgetNVarsLinear(), SCIPgetNVarsLogicor(), SCIPgetNVarsSetppc(), SCIPgetRhsLinear(), SCIPgetRhsVarbound(), SCIPgetSlackVarIndicator(), SCIPgetTypeSetppc(), SCIPgetValsLinear(), SCIPgetVarsKnapsack(), SCIPgetVarsLinear(), SCIPgetVarsLogicor(), SCIPgetVarsSetppc(), SCIPgetVarVarbound(), SCIPgetVbdcoefVarbound(), SCIPgetVbdvarVarbound(), SCIPgetWeightsKnapsack(), SCIPhashmapCreate(), SCIPhashmapFree(), SCIPhashmapGetImage(), SCIPhashmapInsert(), SCIPinfinity(), SCIPinfoMessage(), SCIPprintCons(), SCIPround(), SCIPvarGetNegationVar(), SCIPvarGetObj(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPwarningMessage(), TOPCOSTCONSNAME, and TRUE.

Referenced by writeOpb().

◆ writeOpbFixedVars()

static SCIP_RETCODE writeOpbFixedVars ( SCIP *const  scip,
FILE *const  file,
SCIP_VAR **  vars,
int  nvars,
SCIP_HASHTABLE *const  printedfixing,
char const *const  multisymbol,
SCIP_Bool const  transformed 
)
static
Parameters
scipSCIP data structure
fileoutput file, or NULL if standard output should be used
varsarray with active (binary) variables
nvarsnumber of active variables in the problem
printedfixinghashmap to store if a fixed variable was already printed
multisymbolthe multiplication symbol to use between coefficient and variable
transformedTRUE iff problem is the transformed problem

Definition at line 3581 of file reader_opb.c.

References appendBuffer(), clearBuffer(), FALSE, NULL, OPB_MAX_LINELEN, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPgetBinvarRepresentative(), SCIPhashtableExists(), SCIPhashtableInsert(), SCIPisFeasIntegral(), SCIPsnprintf(), SCIPvarGetLbLocal(), SCIPvarGetLbOriginal(), SCIPvarGetName(), SCIPvarGetNegationVar(), SCIPvarGetUbLocal(), SCIPvarGetUbOriginal(), and writeBuffer().

Referenced by writeOpb().

◆ writeOpbRelevantAnds()

static SCIP_RETCODE writeOpbRelevantAnds ( SCIP *const  scip,
FILE *const  file,
SCIP_VAR **const  resvars,
int const  nresvars,
SCIP_VAR **const *const  andvars,
int const *const  nandvars,
SCIP_HASHTABLE *const  printedfixing,
char const *const  multisymbol,
SCIP_Bool const  transformed 
)
static
Parameters
scipSCIP data structure
fileoutput file, or NULL if standard output should be used
resvarsarray of resultant variables
nresvarsnumber of resultant variables
andvarscorresponding array of and-variables
nandvarsarray of numbers of corresponding and-variables
printedfixinghashmap to store if a fixed variable was already printed
multisymbolthe multiplication symbol to use between coefficient and variable
transformedTRUE iff problem is the transformed problem

Definition at line 3655 of file reader_opb.c.

References a, appendBuffer(), clearBuffer(), FALSE, NULL, OPB_MAX_LINELEN, r, SCIP_Bool, SCIP_CALL, SCIP_Longint, SCIP_LONGINT_FORMAT, SCIP_OKAY, SCIP_Real, SCIPgetBinvarRepresentative(), SCIPhashtableInsert(), SCIPisFeasIntegral(), SCIPsnprintf(), SCIPsortedvecFindPtr(), SCIPvarGetLbLocal(), SCIPvarGetLbOriginal(), SCIPvarGetName(), SCIPvarGetNegationVar(), SCIPvarGetUbLocal(), SCIPvarGetUbOriginal(), SCIPvarIsActive(), SCIPvarIsNegated(), TRUE, and writeBuffer().

Referenced by writeOpb().

◆ writeOpb()

static SCIP_RETCODE writeOpb ( SCIP scip,
FILE *  file,
const char *  name,
SCIP_Bool  transformed,
SCIP_OBJSENSE  objsense,
SCIP_Real  objscale,
SCIP_Real  objoffset,
SCIP_VAR **  vars,
int  nvars,
SCIP_CONS **  conss,
int  nconss,
SCIP_VAR **const  resvars,
int const  nresvars,
SCIP_VAR **const *const  andvars,
int const *const  nandvars,
SCIP_Bool const  existandconshdlr,
SCIP_Bool const  existands,
SCIP_RESULT result 
)
static
Parameters
scipSCIP data structure
fileoutput file, or NULL if standard output should be used
nameproblem name
transformedTRUE iff problem is the transformed problem
objsenseobjective sense
objscalescalar applied to objective function; external objective value is extobj = objsense * objscale * (intobj + objoffset)
objoffsetobjective offset from bound shifting and fixing
varsarray with active (binary) variables
nvarsnumber of active variables in the problem
conssarray with constraints of the problem
nconssnumber of constraints in the problem
resvarsarray of resultant variables
nresvarsnumber of resultant variables
andvarscorresponding array of and-variables
nandvarsarray of numbers of corresponding and-variables
existandconshdlrdoes and-constrainthandler exist?
existandsdoes some and-constraints exist?
resultpointer to store the result of the file writing call

Definition at line 3920 of file reader_opb.c.

References determineTotalNumberLinearConss(), NULL, OPB_MAX_LINELEN, READER_NAME, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_SUCCESS, SCIPblkmem(), SCIPgetBoolParam(), SCIPhashtableCreate(), SCIPhashtableFree(), SCIPinfoMessage(), SCIPsnprintf(), writeOpbConstraints(), writeOpbFixedVars(), writeOpbObjective(), and writeOpbRelevantAnds().

◆ SCIP_DECL_READERCOPY()

static SCIP_DECL_READERCOPY ( readerCopyOpb  )
static

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

Definition at line 4261 of file reader_opb.c.

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

◆ SCIP_DECL_READERREAD()

static SCIP_DECL_READERREAD ( readerReadOpb  )
static

problem reading method of reader

Definition at line 4276 of file reader_opb.c.

References SCIP_CALL, SCIP_OKAY, and SCIPreadOpb().

◆ SCIP_DECL_READERWRITE()

static SCIP_DECL_READERWRITE ( readerWriteOpb  )
static

problem writing method of reader

Definition at line 4287 of file reader_opb.c.

References SCIP_CALL, SCIP_OKAY, and SCIPwriteOpb().

Variable Documentation

◆ commentchars

const char commentchars[] = "*"
static

Definition at line 188 of file reader_opb.c.

Referenced by getMaxAndConsDim(), and getNextLine().