(extended) MPS file reader
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 <assert.h>
#include <string.h>
#include <ctype.h>
#include "scip/reader_mps.h"
#include "scip/cons_knapsack.h"
#include "scip/cons_indicator.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_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 "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 | 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) |
static SCIP_RETCODE | readCols (MPSINPUT *mpsi, SCIP *scip) |
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) |
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) |
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) |
#define READER_NAME "mpsreader" |
Definition at line 54 of file reader_mps.c.
Referenced by SCIP_DECL_READERCOPY(), SCIP_DECL_READERFREE(), SCIP_DECL_READERREAD(), SCIP_DECL_READERWRITE(), and SCIPincludeReaderMps().
#define READER_DESC "file reader for MIQPs in IBM's Mathematical Programming System format" |
Definition at line 55 of file reader_mps.c.
Referenced by SCIPincludeReaderMps().
#define READER_EXTENSION "mps" |
Definition at line 56 of file reader_mps.c.
Referenced by SCIPincludeReaderMps().
#define DEFAULT_LINEARIZE_ANDS TRUE |
should possible "and" constraint be linearized when writing the mps file?
Definition at line 58 of file reader_mps.c.
Referenced by SCIPincludeReaderMps().
#define DEFAULT_AGGRLINEARIZATION_ANDS TRUE |
should an aggregated linearization for and constraints be used?
Definition at line 59 of file reader_mps.c.
Referenced by SCIPincludeReaderMps().
#define MPS_MAX_LINELEN 1024 |
Definition at line 65 of file reader_mps.c.
Referenced by mpsinputReadLine().
#define MPS_MAX_NAMELEN 256 |
Definition at line 66 of file reader_mps.c.
Referenced by checkConsnames(), checkVarnames(), mpsinputSetObjname(), mpsinputSetProbname(), printRecord(), printStart(), readBounds(), readCols(), readIndicators(), readRanges(), readRhs(), readSOS(), SCIP_DECL_HASHKEYEQ(), and SCIP_DECL_READERWRITE().
#define MPS_MAX_VALUELEN 26 |
Definition at line 67 of file reader_mps.c.
Referenced by printBoundSection(), printEntry(), printRecord(), and SCIP_DECL_READERWRITE().
#define MPS_MAX_FIELDLEN 20 |
Definition at line 68 of file reader_mps.c.
Referenced by computeFieldWidth().
#define PATCH_CHAR '_' |
Definition at line 70 of file reader_mps.c.
Referenced by patchField().
#define BLANK ' ' |
Definition at line 71 of file reader_mps.c.
Referenced by clearFrom(), mpsinputReadLine(), and patchField().
typedef enum MpsSection MPSSECTION |
Definition at line 100 of file reader_mps.c.
typedef struct MpsInput MPSINPUT |
Definition at line 126 of file reader_mps.c.
typedef struct SparseMatrix SPARSEMATRIX |
Definition at line 137 of file reader_mps.c.
typedef struct ConsNameFreq CONSNAMEFREQ |
Definition at line 145 of file reader_mps.c.
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 81 of file reader_mps.c.
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creates the mps input structure
scip | SCIP data structure |
mpsi | mps input structure |
fp | file object for the input file |
Definition at line 149 of file reader_mps.c.
References FALSE, MPS_NAME, SCIP_CALL, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIPallocBlockMemory, and SCIPgetBoolParam().
Referenced by readMps().
free the mps input structure
scip | SCIP data structure |
mpsi | mps input structure |
Definition at line 187 of file reader_mps.c.
References SCIPfreeBlockMemory.
Referenced by readMps().
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returns the current section
mpsi | mps input structure |
Definition at line 197 of file reader_mps.c.
Referenced by readMps(), and readRows().
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return the current value of field 0
mpsi | mps input structure |
Definition at line 208 of file reader_mps.c.
Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().
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return the current value of field 1
mpsi | mps input structure |
Definition at line 219 of file reader_mps.c.
Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().
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return the current value of field 2
mpsi | mps input structure |
Definition at line 230 of file reader_mps.c.
Referenced by readBounds(), readCols(), readIndicators(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().
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return the current value of field 3
mpsi | mps input structure |
Definition at line 241 of file reader_mps.c.
Referenced by readBounds(), readCols(), readIndicators(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), and readSOS().
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return the current value of field 4
mpsi | mps input structure |
Definition at line 252 of file reader_mps.c.
Referenced by readBounds(), readCols(), readIndicators(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), and readSOS().
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return the current value of field 5
mpsi | mps input structure |
Definition at line 263 of file reader_mps.c.
Referenced by readCols(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), and readSOS().
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returns the objective name
mpsi | mps input structure |
Definition at line 287 of file reader_mps.c.
Referenced by readCols(), readRhs(), and readRows().
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returns the objective sense
mpsi | mps input structure |
Definition at line 298 of file reader_mps.c.
Referenced by readMps(), and readQMatrix().
returns if an error was detected
mpsi | mps input structure |
Definition at line 309 of file reader_mps.c.
Referenced by readMps().
returns the value of the Bool "is integer" in the mps input
mpsi | mps input structure |
Definition at line 320 of file reader_mps.c.
Referenced by readCols().
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set the section in the mps input structure to given section
mpsi | mps input structure |
section | section that is set |
Definition at line 331 of file reader_mps.c.
Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().
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set the problem name in the mps input structure to given problem name
mpsi | mps input structure |
probname | name of the problem to set |
Definition at line 343 of file reader_mps.c.
References MPS_MAX_NAMELEN, and SCIPmemccpy().
Referenced by readName().
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set the objective name in the mps input structure to given objective name
mpsi | mps input structure |
objname | name of the objective function to set |
Definition at line 357 of file reader_mps.c.
References MPS_MAX_NAMELEN, and SCIPmemccpy().
Referenced by readObjname(), and readRows().
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set the objective sense in the mps input structure to given objective sense
mpsi | mps input structure |
sense | sense of the objective function |
Definition at line 371 of file reader_mps.c.
Referenced by readObjsen().
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mpsi | mps input structure |
Definition at line 382 of file reader_mps.c.
References MPS_ENDATA, SCIPerrorMessage, and TRUE.
Referenced by readBounds(), readCols(), readIndicators(), readMps(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().
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method post a ignore message
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 395 of file reader_mps.c.
References SCIPverbMessage().
Referenced by readBounds(), readCols(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().
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fill the line from pos
up to column 80 with blanks.
buf | buffer to clear |
pos | position to start the clearing process |
Definition at line 417 of file reader_mps.c.
References BLANK.
Referenced by mpsinputReadLine().
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change all blanks inside a field to PATCH_CHAR.
buf | buffer to patch |
beg | position to begin |
end | position to end |
Definition at line 431 of file reader_mps.c.
References BLANK, and PATCH_CHAR.
Referenced by mpsinputReadLine().
read a mps format data line and parse the fields.
mpsi | mps input structure |
Definition at line 452 of file reader_mps.c.
References BLANK, clearFrom(), FALSE, MPS_BOUNDS, MPS_COLUMNS, MPS_MAX_LINELEN, MPS_RANGES, MPS_RHS, number, patchField(), SCIP_Bool, SCIPdebugMessage, SCIPfgets(), SCIPstrtok(), and TRUE.
Referenced by readBounds(), readCols(), readIndicators(), readName(), readObjname(), readObjsen(), readQCMatrix(), readQMatrix(), readRanges(), readRhs(), readRows(), and readSOS().
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Insert str
as field 4 and shift all other fields up.
mpsi | mps input structure |
str | str to insert |
Definition at line 628 of file reader_mps.c.
Referenced by readBounds().
Insert name
as field 1 or 2 and shift all other fields up.
mpsi | mps input structure |
name | name to insert |
second | insert as second field? |
Definition at line 642 of file reader_mps.c.
Referenced by readBounds(), readRanges(), and readRhs().
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Process NAME section.
scip | SCIP data structure |
mpsi | mps input structure |
Definition at line 666 of file reader_mps.c.
References MPS_LAZYCONS, MPS_OBJNAME, MPS_OBJSEN, MPS_ROWS, MPS_USERCUTS, mpsinputField0(), mpsinputField1(), mpsinputReadLine(), mpsinputSetProbname(), mpsinputSetSection(), mpsinputSyntaxerror(), SCIP_OKAY, and SCIPdebugMsg.
Referenced by readMps().
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Process OBJSEN section. This Section is a CPLEX extension.
scip | SCIP data structure |
mpsi | mps input structure |
Definition at line 713 of file reader_mps.c.
References MPS_LAZYCONS, MPS_OBJNAME, MPS_ROWS, MPS_USERCUTS, mpsinputField0(), mpsinputField1(), mpsinputReadLine(), mpsinputSetObjsense(), mpsinputSetSection(), mpsinputSyntaxerror(), SCIP_OBJSENSE_MAXIMIZE, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, and SCIPdebugMsg.
Referenced by readMps().
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Process OBJNAME section. This Section is a CPLEX extension.
scip | SCIP data structure |
mpsi | mps input structure |
Definition at line 765 of file reader_mps.c.
References MPS_LAZYCONS, MPS_ROWS, MPS_USERCUTS, mpsinputField0(), mpsinputField1(), mpsinputReadLine(), mpsinputSetObjname(), mpsinputSetSection(), mpsinputSyntaxerror(), SCIP_OKAY, and SCIPdebugMsg.
Referenced by readMps().
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Process ROWS, USERCUTS, or LAZYCONS section.
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 803 of file reader_mps.c.
References FALSE, MPS_COLUMNS, MPS_LAZYCONS, MPS_ROWS, MPS_USERCUTS, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputObjname(), mpsinputReadLine(), mpsinputSection(), mpsinputSetObjname(), mpsinputSetSection(), mpsinputSyntaxerror(), SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_VERBLEVEL_NORMAL, SCIPaddCons(), SCIPcreateConsLinear(), SCIPdebugMsg, SCIPfindCons(), SCIPinfinity(), SCIPreleaseCons(), and TRUE.
Referenced by readMps().
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Process COLUMNS section.
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 891 of file reader_mps.c.
References MPS_MAX_NAMELEN, MPS_RHS, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputIsInteger(), mpsinputObjname(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_CONTINUOUS, SCIP_VERBLEVEL_FULL, SCIPaddCoefLinear(), SCIPaddVar(), SCIPchgVarObj(), SCIPcreateVar(), SCIPdebugMsg, SCIPfindCons(), SCIPinfinity(), SCIPisZero(), SCIPmemccpy(), and SCIPreleaseVar().
Referenced by readMps().
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Process RHS section.
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 998 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(), SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPaddOrigObjoffset(), SCIPchgLhsLinear(), SCIPchgRhsLinear(), SCIPdebugMsg, SCIPfindCons(), SCIPgetLhsLinear(), SCIPgetRhsLinear(), SCIPisInfinity(), SCIPisZero(), SCIPmemccpy(), and SCIPwarningMessage().
Referenced by readMps().
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Process RANGES section
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 1145 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(), REALABS, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPchgLhsLinear(), SCIPchgRhsLinear(), SCIPdebugMsg, SCIPfindCons(), SCIPgetLhsLinear(), SCIPgetRhsLinear(), SCIPisEQ(), SCIPisInfinity(), SCIPmemccpy(), and SCIPwarningMessage().
Referenced by readMps().
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Process BOUNDS section.
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 1285 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(), 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().
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Process SOS section.
We read the SOS section, which is a nonstandard section introduced by CPLEX.
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 1663 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(), 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().
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Process QMATRIX or QUADOBJ section.
mpsi | mps input structure |
isQuadObj | whether we actually read a QUADOBJ section |
scip | SCIP data structure |
Definition at line 1849 of file reader_mps.c.
References FALSE, MPS_ENDATA, MPS_INDICATORS, MPS_QCMATRIX, mpsinputEntryIgnored(), mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputField5(), mpsinputObjsense(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), SCIP_Bool, SCIP_CALL, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIP_Real, SCIP_VARTYPE_CONTINUOUS, SCIP_VERBLEVEL_NORMAL, SCIPaddCons(), SCIPaddVar(), SCIPallocBufferArray, SCIPcalcMemGrowSize(), SCIPconsGetName(), SCIPcreateConsQuadratic(), SCIPcreateVar(), SCIPdebugMsg, SCIPdebugPrintCons, SCIPerrorMessage, SCIPfindVar(), SCIPfreeBufferArray, SCIPinfinity(), SCIPreallocBufferArray, SCIPreleaseCons(), SCIPreleaseVar(), SCIPvarGetName(), SCIPwarningMessage(), and TRUE.
Referenced by readMps().
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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.
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 2051 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(), SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VERBLEVEL_NORMAL, SCIPaddCons(), SCIPallocBufferArray, SCIPcalcMemGrowSize(), SCIPconsGetName(), SCIPconsIsChecked(), SCIPconsIsDynamic(), SCIPconsIsEnforced(), SCIPconsIsInitial(), SCIPconsIsLocal(), SCIPconsIsModifiable(), SCIPconsIsPropagated(), SCIPconsIsRemovable(), SCIPconsIsSeparated(), SCIPcreateConsQuadratic(), SCIPdebugMsg, SCIPdebugPrintCons, SCIPdelCons(), SCIPerrorMessage, SCIPfindCons(), SCIPfindVar(), SCIPfreeBufferArray, SCIPgetLhsLinear(), SCIPgetNVarsLinear(), SCIPgetRhsLinear(), SCIPgetValsLinear(), SCIPgetVarsLinear(), SCIPreallocBufferArray, SCIPreleaseCons(), SCIPvarGetName(), and SCIPwarningMessage().
Referenced by readMps().
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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.
mpsi | mps input structure |
scip | SCIP data structure |
Definition at line 2226 of file reader_mps.c.
References FALSE, MPS_ENDATA, MPS_MAX_NAMELEN, mpsinputField0(), mpsinputField1(), mpsinputField2(), mpsinputField3(), mpsinputField4(), mpsinputReadLine(), mpsinputSetSection(), mpsinputSyntaxerror(), 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(), SCIPsnprintf(), SCIPvarGetType(), SCIPvarIsIntegral(), sign(), and TRUE.
Referenced by readMps().
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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".
scip | SCIP data structure |
filename | name of the input file |
Definition at line 2462 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(), 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 SCIP_DECL_READERREAD().
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gets the key (i.e. the name) of the given namefreq
Definition at line 2570 of file reader_mps.c.
References ConsNameFreq::consname.
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returns TRUE iff both keys (i.e. strings) are equal up to max length
Definition at line 2582 of file reader_mps.c.
References MPS_MAX_NAMELEN.
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hash key retrieval function for variables
Definition at line 2592 of file reader_mps.c.
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returns TRUE iff the indices of both variables are equal
Definition at line 2599 of file reader_mps.c.
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returns the hash value of the key
Definition at line 2608 of file reader_mps.c.
References SCIPvarGetIndex().
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computes the field width such that the output file is nicely arranged
width | required width |
Definition at line 2617 of file reader_mps.c.
References MAX, and MPS_MAX_FIELDLEN.
Referenced by printRecord(), and printStart().
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output two strings in columns 1 and 2 with computed widths
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 2628 of file reader_mps.c.
References computeFieldWidth(), MPS_MAX_NAMELEN, MPS_MAX_VALUELEN, SCIPinfoMessage(), and SCIPsnprintf().
Referenced by printBoundSection(), printColumnSection(), printEntry(), and SCIP_DECL_READERWRITE().
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output two strings in columns 1 (width 2) and 2 (width 8)
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 2654 of file reader_mps.c.
References computeFieldWidth(), MPS_MAX_NAMELEN, SCIPinfoMessage(), and SCIPsnprintf().
Referenced by printBoundSection(), printColumnSection(), printEntry(), printRowType(), and SCIP_DECL_READERWRITE().
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prints the given data as column entry
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 2688 of file reader_mps.c.
References MPS_MAX_VALUELEN, printRecord(), printStart(), SCIPinfoMessage(), and SCIPsnprintf().
Referenced by printColumnSection(), printRangeSection(), and printRhsSection().
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prints the constraint type to file stream
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 2726 of file reader_mps.c.
References printStart(), SCIPinfoMessage(), SCIPisEQ(), SCIPisGT(), SCIPisInfinity(), and SCIPsnprintf().
Referenced by SCIP_DECL_READERWRITE().
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initializes the sparse matrix
scip | SCIP data structure |
matrix | pointer to sparse matrix containing the entries |
slots | number of slots |
Definition at line 2764 of file reader_mps.c.
References SCIP_CALL, SCIP_OKAY, SCIPallocBuffer, and SCIPallocBufferArray.
Referenced by SCIP_DECL_READERWRITE().
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this method takes care that the required capacity is available in the sparse matrix
scip | SCIP data structure |
matrix | sparse matrix for storing the coefficient |
capacity | needed capacity |
Definition at line 2782 of file reader_mps.c.
References SCIP_CALL, SCIP_OKAY, and SCIPreallocBufferArray.
Referenced by getLinearCoeffs(), and SCIP_DECL_READERWRITE().
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frees the sparse matrix
scip | SCIP data structure |
matrix | sparse matrix to free |
Definition at line 2800 of file reader_mps.c.
References SCIPfreeBuffer, and SCIPfreeBufferArray.
Referenced by SCIP_DECL_READERWRITE().
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computes the coefficient for the given variables and linear constraint information
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 2815 of file reader_mps.c.
References checkSparseMatrixCapacity(), ConsNameFreq::consname, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_NEGATED, SCIPallocBufferArray, SCIPduplicateBufferArray, SCIPfreeBufferArray, SCIPgetProbvarLinearSum(), SCIPisInfinity(), SCIPreallocBufferArray, SCIPvarGetNegatedVar(), SCIPvarGetOrigvarSum(), SCIPvarGetStatus(), and TRUE.
Referenced by SCIP_DECL_READERWRITE().
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check whether given variables are aggregated and put them into an array without duplication
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 2918 of file reader_mps.c.
References SCIP_CALL, SCIP_OKAY, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_MULTAGGR, SCIP_VARSTATUS_NEGATED, SCIPcalcMemGrowSize(), SCIPhashtableExists(), SCIPhashtableInsert(), SCIPreallocBlockMemoryArray, and SCIPvarGetStatus().
Referenced by SCIP_DECL_READERWRITE().
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method check if the variable names are not longer than MPS_MAX_NAMELEN - 1
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 2975 of file reader_mps.c.
References MAX, MPS_MAX_NAMELEN, SCIP_CALL, SCIP_OKAY, SCIPallocBufferArray, SCIPblkmem(), SCIPhashmapCreate(), SCIPhashmapExists(), SCIPhashmapInsert(), SCIPsnprintf(), SCIPvarGetName(), and SCIPwarningMessage().
Referenced by SCIP_DECL_READERWRITE().
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method check if the constraint names are not longer than MPS_MAX_NAMELEN - 1
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 3039 of file reader_mps.c.
References ConsNameFreq::consname, FALSE, ConsNameFreq::freq, MAX, MPS_MAX_NAMELEN, SCIP_CALL, SCIP_HASHSIZE_NAMES, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPblkmem(), SCIPconsGetName(), SCIPconsIsEnabled(), SCIPfreeBufferArray, SCIPhashtableCreate(), SCIPhashtableFree(), SCIPhashtableInsert(), SCIPhashtableRetrieve(), SCIPsnprintf(), SCIPwarningMessage(), and TRUE.
Referenced by SCIP_DECL_READERWRITE().
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outputs the COLUMNS section of the MPS format
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 3145 of file reader_mps.c.
References FALSE, printEntry(), printRecord(), printStart(), SCIP_Bool, SCIP_Real, SCIP_VARTYPE_CONTINUOUS, SCIPdebugMsg, SCIPhashmapExists(), SCIPhashmapGetImage(), SCIPhashtableExists(), SCIPinfoMessage(), SCIPsortPtrPtrReal(), SCIPvarGetName(), SCIPvarGetType(), and TRUE.
Referenced by SCIP_DECL_READERWRITE().
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outputs the right hand side section
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 |
Definition at line 3237 of file reader_mps.c.
References printEntry(), SCIPdebugMsg, SCIPinfoMessage(), and SCIPisInfinity().
Referenced by SCIP_DECL_READERWRITE().
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outputs the range section
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 3273 of file reader_mps.c.
References printEntry(), SCIP_Real, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPconsIsEnabled(), SCIPdebugMsg, SCIPgetLhsLinear(), SCIPgetLhsVarbound(), SCIPgetRhsLinear(), SCIPgetRhsVarbound(), SCIPinfoMessage(), SCIPisEQ(), SCIPisGT(), and SCIPisInfinity().
Referenced by SCIP_DECL_READERWRITE().
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print bound section name
scip | SCIP data structure |
file | output file, or NULL if standard output should be used |
Definition at line 3338 of file reader_mps.c.
References SCIPdebugMsg, and SCIPinfoMessage().
Referenced by printBoundSection().
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output bound section
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 3349 of file reader_mps.c.
References FALSE, MPS_MAX_VALUELEN, 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 SCIP_DECL_READERWRITE().
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copy method for reader plugins (called when SCIP copies plugins) ! [SnippetReaderCopyMps]
Definition at line 3612 of file reader_mps.c.
References READER_NAME, SCIP_CALL, SCIP_OKAY, SCIPincludeReaderMps(), and SCIPreaderGetName().
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! [SnippetReaderCopyMps] destructor of reader to free user data (called when SCIP is exiting) ! [SnippetReaderFreeMps]
Definition at line 3628 of file reader_mps.c.
References READER_NAME, SCIP_OKAY, SCIPfreeBlockMemory, SCIPreaderGetData(), and SCIPreaderGetName().
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! [SnippetReaderFreeMps] problem reading method of reader
Definition at line 3643 of file reader_mps.c.
References READER_NAME, readMps(), SCIP_CALL, SCIP_NOFILE, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_READERROR, SCIP_SUCCESS, and SCIPreaderGetName().
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problem writing method of reader
Definition at line 3670 of file reader_mps.c.
References checkConsnames(), checkSparseMatrixCapacity(), checkVarnames(), collectAggregatedVars(), ConsNameFreq::consname, FALSE, freeMatrix(), getLinearCoeffs(), initializeMatrix(), SCIP_QuadVarTerm::lincoef, MAX, MPS_MAX_NAMELEN, MPS_MAX_VALUELEN, printBoundSection(), printColumnSection(), printRangeSection(), printRecord(), printRhsSection(), printRowType(), printStart(), READER_NAME, SCIP_Bool, SCIP_CALL, SCIP_Longint, SCIP_OBJSENSE_MAXIMIZE, SCIP_OKAY, SCIP_Real, SCIP_SETPPCTYPE_COVERING, SCIP_SETPPCTYPE_PACKING, SCIP_SETPPCTYPE_PARTITIONING, SCIP_SUCCESS, SCIP_VARSTATUS_AGGREGATED, SCIP_VARSTATUS_FIXED, SCIP_VARTYPE_IMPLINT, SCIPallocBlockMemoryArray, SCIPallocBufferArray, SCIPblkmem(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetName(), SCIPconsIsEnabled(), SCIPdebugMsg, SCIPfindConshdlr(), SCIPfreeBlockMemoryArray, SCIPfreeBufferArray, SCIPgetBilinTermsQuadratic(), SCIPgetBinaryVarIndicator(), SCIPgetCapacityKnapsack(), SCIPgetCoefsLinearVarsQuadratic(), SCIPgetLhsCoefsSOC(), SCIPgetLhsConstantSOC(), SCIPgetLhsLinear(), SCIPgetLhsOffsetsSOC(), SCIPgetLhsQuadratic(), SCIPgetLhsVarbound(), SCIPgetLhsVarsSOC(), SCIPgetLinearConsIndicator(), SCIPgetLinearVarsQuadratic(), SCIPgetNBilinTermsQuadratic(), SCIPgetNLhsVarsSOC(), SCIPgetNLinearVarsQuadratic(), SCIPgetNQuadVarTermsQuadratic(), SCIPgetNVarsAnd(), SCIPgetNVarsKnapsack(), SCIPgetNVarsLinear(), SCIPgetNVarsLogicor(), SCIPgetNVarsSetppc(), SCIPgetNVarsSOS1(), SCIPgetNVarsSOS2(), SCIPgetQuadVarTermsQuadratic(), SCIPgetResultantAnd(), SCIPgetRhsCoefSOC(), SCIPgetRhsLinear(), SCIPgetRhsOffsetSOC(), SCIPgetRhsQuadratic(), SCIPgetRhsVarbound(), SCIPgetRhsVarSOC(), SCIPgetSlackVarIndicator(), SCIPgetTypeSetppc(), SCIPgetValsLinear(), SCIPgetVarsAnd(), SCIPgetVarsKnapsack(), SCIPgetVarsLinear(), SCIPgetVarsLogicor(), SCIPgetVarsSetppc(), SCIPgetVarsSOS1(), SCIPgetVarsSOS2(), SCIPgetVarVarbound(), SCIPgetVbdcoefVarbound(), SCIPgetVbdvarVarbound(), SCIPgetWeightsKnapsack(), SCIPgetWeightsSOS1(), SCIPgetWeightsSOS2(), SCIPhashmapExists(), SCIPhashmapFree(), SCIPhashmapGetImage(), SCIPhashmapInsert(), SCIPhashtableCreate(), SCIPhashtableExists(), SCIPhashtableFree(), SCIPhashtableInsert(), SCIPinfinity(), SCIPinfoMessage(), SCIPisEQ(), SCIPisInfinity(), SCIPisZero(), SCIPprintOrigProblem(), SCIPprintTransProblem(), SCIPreaderGetData(), SCIPreaderGetName(), SCIPreallocBufferArray, SCIPsnprintf(), SCIPvarGetName(), SCIPvarGetNegatedVar(), SCIPvarGetNLocksDown(), SCIPvarGetNLocksUp(), SCIPvarGetObj(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarIsNegated(), SCIPwarningMessage(), TRUE, and SCIP_QuadVarTerm::var.