reader_gms.c File Reference

Detailed Description

GAMS file writer.

Author

Ambros Gleixner

Stefan Vigerske

Definition in file reader_gms.c.

#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include "scip/reader_gms.h"
#include "scip/cons_knapsack.h"
#include "scip/cons_linear.h"
#include "scip/cons_logicor.h"
#include "scip/cons_quadratic.h"
#include "scip/cons_soc.h"
#include "scip/cons_sos1.h"
#include "scip/cons_sos2.h"
#include "scip/cons_setppc.h"
#include "scip/cons_varbound.h"
#include "scip/cons_indicator.h"
#include "scip/cons_abspower.h"
#include "scip/cons_nonlinear.h"
#include "scip/cons_bivariate.h"
#include "scip/pub_misc.h"

Go to the source code of this file.

Macros
#define	READER_NAME   "gmsreader"
#define	READER_DESC   "file writer for MI(NL)(SOC)Ps in GAMS file format"
#define	READER_EXTENSION   "gms"
#define	GMS_MAX_LINELEN   256
#define	GMS_MAX_PRINTLEN   256
#define	GMS_MAX_NAMELEN   64
#define	GMS_PRINTLEN   100
#define	GMS_DEFAULT_BIGM   1e+6
#define	GMS_DEFAULT_INDICATORREFORM   's'
#define	GMS_DEFAULT_SIGNPOWER   FALSE

Functions
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	appendLineWithIndent (SCIP *scip, FILE *file, char *linebuffer, int *linecnt, const char *extension)
static void	conformName (char *name)
static SCIP_RETCODE	printConformName (SCIP *scip, char *t, int len, const char *name)
static SCIP_RETCODE	printActiveVariables (SCIP *scip, FILE *file, char *linebuffer, int *linecnt, const char *prefix, const char *suffix, int nvars, SCIP_VAR **vars, SCIP_Real *vals, SCIP_Bool transformed)
static SCIP_RETCODE	printLinearRow (SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, int nvars, SCIP_VAR **vars, SCIP_Real *vals, SCIP_Real rhs)
static SCIP_RETCODE	printLinearCons (SCIP *scip, FILE *file, const char *rowname, int nvars, SCIP_VAR **vars, SCIP_Real *vals, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed)
static SCIP_RETCODE	printQuadraticRow (SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nquadvarterms, SCIP_QUADVARTERM *quadvarterms, int nbilinterms, SCIP_BILINTERM *bilinterms, SCIP_Real rhs, SCIP_Bool transformed)
static SCIP_RETCODE	printQuadraticCons (SCIP *scip, FILE *file, const char *rowname, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nquadvarterms, SCIP_QUADVARTERM *quadvarterms, int nbilinterms, SCIP_BILINTERM *bilinterms, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed)
static SCIP_Bool	isGAMSprintableSOC (int nlhsvars, SCIP_VAR **lhsvars, SCIP_Real *lhscoeffs, SCIP_Real *lhsoffsets, SCIP_Real lhsconstant, SCIP_VAR *rhsvar, SCIP_Real rhscoef, SCIP_Real rhsoffset)
static SCIP_RETCODE	printSOCCons (SCIP *scip, FILE *file, const char *rowname, int nlhsvars, SCIP_VAR **lhsvars, SCIP_Real *lhscoeffs, SCIP_Real *lhsoffsets, SCIP_Real lhsconstant, SCIP_VAR *rhsvar, SCIP_Real rhscoef, SCIP_Real rhsoffset, SCIP_Bool transformed)
static SCIP_RETCODE	printIndicatorCons (SCIP *scip, FILE *file, const char *rowname, SCIP_VAR *z, SCIP_VAR *s, SCIP_Bool *sossetdeclr, SCIP_Bool transformed)
static SCIP_RETCODE	printSOSCons (SCIP *scip, FILE *file, const char *rowname, int nvars, SCIP_VAR **vars, int sostype, SCIP_Bool transformed)
static SCIP_RETCODE	printSignpowerRow (SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, SCIP_VAR *nonlinvar, SCIP_VAR *linvar, SCIP_Real exponent, SCIP_Real offset, SCIP_Real coeflinear, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool signpowerallowed, SCIP_Bool *nsmooth)
static SCIP_RETCODE	printSignpowerCons (SCIP *scip, FILE *file, const char *rowname, SCIP_VAR *nonlinvar, SCIP_VAR *linvar, SCIP_Real exponent, SCIP_Real offset, SCIP_Real coeflinear, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool signpowerallowed, SCIP_Bool *nsmooth)
static SCIP_RETCODE	printExpr (SCIP *scip, FILE *file, char *linebuffer, int *linecnt, SCIP_Bool *nsmooth, SCIP_Bool transformed, SCIP_EXPR *expr, SCIP_VAR **exprvars)
static SCIP_RETCODE	printNonlinearRow (SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nexprtrees, SCIP_EXPRTREE **exprtrees, SCIP_Real *exprtreecoefs, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool *nsmooth)
static SCIP_RETCODE	printNonlinearCons (SCIP *scip, FILE *file, const char *rowname, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nexprtrees, SCIP_EXPRTREE **exprtrees, SCIP_Real *exprtreecoefs, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool *nsmooth)
static SCIP_RETCODE	checkVarnames (SCIP *scip, SCIP_VAR **vars, int nvars)
static SCIP_RETCODE	checkConsnames (SCIP *scip, SCIP_CONS **conss, int nconss, SCIP_Bool transformed)
static	SCIP_DECL_READERCOPY (readerCopyGms)
static	SCIP_DECL_READERWRITE (readerWriteGms)
SCIP_RETCODE	SCIPincludeReaderGms (SCIP *scip)
SCIP_RETCODE	SCIPwriteGms (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	badchars [] = "#*+/-@$"

Macro Definition Documentation

#define READER_NAME   "gmsreader"

Definition at line 55 of file reader_gms.c.

Referenced by SCIP_DECL_READERCOPY(), and SCIPincludeReaderGms().

#define READER_DESC   "file writer for MI(NL)(SOC)Ps in GAMS file format"

Definition at line 56 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

#define READER_EXTENSION   "gms"

Definition at line 57 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

#define GMS_MAX_LINELEN   256

Definition at line 60 of file reader_gms.c.

Referenced by SCIPwriteGms().

#define GMS_MAX_PRINTLEN   256

the maximum length of any line is 255 + '\0' = 256

Definition at line 61 of file reader_gms.c.

Referenced by appendLine(), printActiveVariables(), printExpr(), printIndicatorCons(), printLinearRow(), printNonlinearRow(), printQuadraticRow(), printSignpowerRow(), printSOCCons(), printSOSCons(), and SCIPwriteGms().

#define GMS_MAX_NAMELEN   64

the maximum length for any name is 63 + '\0' = 64

Definition at line 62 of file reader_gms.c.

Referenced by checkConsnames(), checkVarnames(), printActiveVariables(), printIndicatorCons(), printLinearRow(), printNonlinearRow(), printQuadraticRow(), printSignpowerRow(), printSOCCons(), printSOSCons(), and SCIPwriteGms().

#define GMS_PRINTLEN   100

Definition at line 63 of file reader_gms.c.

Referenced by appendLine().

#define GMS_DEFAULT_BIGM   1e+6

Definition at line 64 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

#define GMS_DEFAULT_INDICATORREFORM   's'

Definition at line 65 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

#define GMS_DEFAULT_SIGNPOWER   FALSE

Definition at line 66 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

Function Documentation

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	vars array to get active variables for
scalars	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 76 of file reader_gms.c.

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

Referenced by printActiveVariables(), and printLinearCons().

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 119 of file reader_gms.c.

References NULL.

Referenced by endLine(), printIndicatorCons(), printLinearRow(), printNonlinearRow(), printQuadraticRow(), printSignpowerRow(), printSOCCons(), printSOSCons(), and SCIPwriteGms().

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 133 of file reader_gms.c.

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

Referenced by appendLine(), printIndicatorCons(), printLinearRow(), printNonlinearRow(), printQuadraticRow(), printSignpowerRow(), printSOCCons(), printSOSCons(), and SCIPwriteGms().

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 GMS_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 extend the line

Definition at line 155 of file reader_gms.c.

References endLine(), GMS_MAX_PRINTLEN, GMS_PRINTLEN, NULL, and SCIPdebugMessage.

Referenced by appendLineWithIndent(), printActiveVariables(), printIndicatorCons(), printLinearRow(), printNonlinearRow(), printQuadraticRow(), printSignpowerRow(), printSOCCons(), printSOSCons(), and SCIPwriteGms().

static void appendLineWithIndent ( 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 GMS_PRINTLEN indents the line by some spaces if it is a new line

Parameters

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

Definition at line 189 of file reader_gms.c.

References appendLine().

Referenced by printExpr(), and printNonlinearRow().

static void conformName ( char *  name )

static

checks string for occurences of '#', '*', '+', '/', and '-' and replaces those by '_'

Parameters

name	string to adjust

Definition at line 206 of file reader_gms.c.

References badchars, and NULL.

Referenced by printConformName().

static SCIP_RETCODE printConformName ( SCIP *  scip, char *  t, int  len, const char *  name  )

static

Parameters

scip	SCIP data structure
t	target string
len	length of t
name	source string or format string

Definition at line 230 of file reader_gms.c.

References conformName(), NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIPgetBoolParam(), and SCIPsnprintf().

Referenced by printActiveVariables(), printIndicatorCons(), printLinearRow(), printNonlinearRow(), printQuadraticRow(), printSignpowerRow(), printSOCCons(), printSOSCons(), and SCIPwriteGms().

static SCIP_RETCODE printActiveVariables ( SCIP *  scip, FILE *  file, char *  linebuffer, int *  linecnt, const char *  prefix, const char *  suffix, int  nvars, SCIP_VAR **  vars, SCIP_Real *  vals, SCIP_Bool  transformed  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
linebuffer	line
linecnt	number of characters in line
prefix	prefix (maybe NULL)
suffix	suffix (maybe NULL)
nvars	number of variables
vars	array of variables
vals	array of values (or NULL if all ones)
transformed	transformed constraint?

Definition at line 255 of file reader_gms.c.

References appendLine(), getActiveVariables(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, NULL, printConformName(), SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPduplicateBufferArray, SCIPfreeBufferArray, SCIPisEQ(), SCIPisZero(), SCIPsnprintf(), and SCIPvarGetName().

Referenced by printExpr(), printIndicatorCons(), printNonlinearRow(), printQuadraticRow(), printSignpowerRow(), printSOCCons(), printSOSCons(), and SCIPwriteGms().

static SCIP_RETCODE printLinearRow ( SCIP *  scip, FILE *  file, const char *  rowname, const char *  rownameextension, const char *  type, int  nvars, SCIP_VAR **  vars, SCIP_Real *  vals, 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 ("=e=", "=l=", or "=g=")
nvars	number of variables
vars	array of variables
vals	array of values
rhs	right hand side

Definition at line 410 of file reader_gms.c.

References appendLine(), clearLine(), endLine(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, NULL, printConformName(), SCIP_CALL, SCIP_OKAY, SCIPisZero(), SCIPsnprintf(), and SCIPvarGetName().

Referenced by printLinearCons().

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

static

prints given linear constraint information in GAMS format to file stream

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	name of the row
nvars	number of variables
vars	array of variables
vals	array of coefficients values (or NULL if all coefficient values are 1)
lhs	left hand side
rhs	right hand side
transformed	transformed constraint?

Definition at line 494 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

static SCIP_RETCODE printQuadraticRow ( SCIP *  scip, FILE *  file, const char *  rowname, const char *  rownameextension, const char *  type, int  nlinvars, SCIP_VAR **  linvars, SCIP_Real *  lincoeffs, int  nquadvarterms, SCIP_QUADVARTERM *  quadvarterms, int  nbilinterms, SCIP_BILINTERM *  bilinterms, SCIP_Real  rhs, SCIP_Bool  transformed  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
rownameextension	row name extension
type	row type ("=e=", "=l=", or "=g=")
nlinvars	number of linear terms
linvars	variables in linear part
lincoeffs	coefficients of variables in linear part
nquadvarterms	number of quadratic variable terms
quadvarterms	quadratic variable terms
nbilinterms	number of bilinear terms
bilinterms	bilinear terms
rhs	right hand side
transformed	transformed constraint?

Definition at line 582 of file reader_gms.c.

References appendLine(), clearLine(), endLine(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, NULL, printActiveVariables(), printConformName(), SCIP_CALL, SCIP_OKAY, SCIPisZero(), SCIPsnprintf(), SCIP_QuadVarTerm::var, SCIP_BilinTerm::var1, and SCIP_BilinTerm::var2.

Referenced by printQuadraticCons().

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

static

prints given quadratic constraint information in GAMS format to file stream

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	name of the row
nlinvars	number of linear terms
linvars	variables in linear part
lincoeffs	coefficients of variables in linear part
nquadvarterms	number of quadratic variable terms
quadvarterms	quadratic variable terms
nbilinterms	number of bilinear terms
bilinterms	bilinear terms
lhs	left hand side
rhs	right hand side
transformed	transformed constraint?

Definition at line 701 of file reader_gms.c.

References NULL, printQuadraticRow(), SCIP_CALL, SCIP_OKAY, SCIPisEQ(), and SCIPisInfinity().

Referenced by SCIPwriteGms().

static SCIP_Bool isGAMSprintableSOC ( int  nlhsvars, SCIP_VAR **  lhsvars, SCIP_Real *  lhscoeffs, SCIP_Real *  lhsoffsets, SCIP_Real  lhsconstant, SCIP_VAR *  rhsvar, SCIP_Real  rhscoef, SCIP_Real  rhsoffset  )

static

check GAMS limitations on SOC constraints returns true of constraint can be written as conic equation in GAMS (using equation type =C=)

Parameters

nlhsvars	number of variables on left hand side
lhsvars	variables on left hand side
lhscoeffs	coefficients of variables on left hand side, or NULL if == 1.0
lhsoffsets	offsets of variables on left hand side, or NULL if == 0.0
lhsconstant	constant on left hand side
rhsvar	variable on right hand side
rhscoef	coefficient of variable on right hand side
rhsoffset	offset of variable on right hand side

Definition at line 766 of file reader_gms.c.

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

Referenced by printSOCCons(), and SCIPwriteGms().

static SCIP_RETCODE printSOCCons ( SCIP *  scip, FILE *  file, const char *  rowname, int  nlhsvars, SCIP_VAR **  lhsvars, SCIP_Real *  lhscoeffs, SCIP_Real *  lhsoffsets, SCIP_Real  lhsconstant, SCIP_VAR *  rhsvar, SCIP_Real  rhscoef, SCIP_Real  rhsoffset, SCIP_Bool  transformed  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
nlhsvars	number of variables on left hand side
lhsvars	variables on left hand side
lhscoeffs	coefficients of variables on left hand side, or NULL if == 1.0
lhsoffsets	offsets of variables on left hand side, or NULL if == 0.0
lhsconstant	constant on left hand side
rhsvar	variable on right hand side
rhscoef	coefficient of variable on right hand side
rhsoffset	offset of variable on right hand side
transformed	transformed constraint?

Definition at line 821 of file reader_gms.c.

References appendLine(), clearLine(), endLine(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, isGAMSprintableSOC(), NULL, printActiveVariables(), printConformName(), SCIP_CALL, SCIP_OKAY, and SCIPsnprintf().

Referenced by SCIPwriteGms().

static SCIP_RETCODE printIndicatorCons ( SCIP *  scip, FILE *  file, const char *  rowname, SCIP_VAR *  z, SCIP_VAR *  s, SCIP_Bool *  sossetdeclr, SCIP_Bool  transformed  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
z	indicating variable (binary)
s	slack variable
sossetdeclr	buffer to store whether we declared the SOS set for indicator reform
transformed	transformed constraint?

Definition at line 911 of file reader_gms.c.

References appendLine(), clearLine(), endLine(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, NULL, printActiveVariables(), printConformName(), SCIP_CALL, SCIP_ERROR, SCIP_OKAY, SCIP_Real, SCIPerrorMessage, SCIPgetCharParam(), SCIPgetRealParam(), SCIPinfoMessage(), SCIPisInfinity(), SCIPsnprintf(), SCIPvarGetName(), SCIPvarGetUbGlobal(), SCIPvarIsBinary(), SCIPwarningMessage(), and TRUE.

Referenced by SCIPwriteGms().

static SCIP_RETCODE printSOSCons ( SCIP *  scip, FILE *  file, const char *  rowname, int  nvars, SCIP_VAR **  vars, int  sostype, SCIP_Bool  transformed  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
nvars	number of variables in SOS
vars	variables in SOS
sostype	type of SOS: 1 or 2
transformed	transformed constraint?

Definition at line 1023 of file reader_gms.c.

References appendLine(), clearLine(), endLine(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, NULL, printActiveVariables(), printConformName(), SCIP_CALL, SCIP_OKAY, SCIP_Real, and SCIPsnprintf().

Referenced by SCIPwriteGms().

static SCIP_RETCODE printSignpowerRow ( SCIP *  scip, FILE *  file, const char *  rowname, const char *  rownameextension, const char *  type, SCIP_VAR *  nonlinvar, SCIP_VAR *  linvar, SCIP_Real  exponent, SCIP_Real  offset, SCIP_Real  coeflinear, SCIP_Real  rhs, SCIP_Bool  transformed, SCIP_Bool  signpowerallowed, SCIP_Bool *  nsmooth  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
rownameextension	row name extension
type	row type ("=e=", "=l=", or "=g=")
nonlinvar	nonlinear variable
linvar	linear variable, may be NULL
exponent	exponent of nonlinear variable
offset	offset of nonlinear variable
coeflinear	coefficient of linear variable
rhs	right hand side
transformed	transformed constraint?
signpowerallowed	allowed to use signpower operator in GAMS?
nsmooth	buffer to store whether we printed a nonsmooth function

Definition at line 1080 of file reader_gms.c.

References appendLine(), clearLine(), endLine(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, NULL, printActiveVariables(), printConformName(), SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIPfloor(), SCIPisIntegral(), SCIPisNegative(), SCIPisPositive(), SCIPisZero(), SCIPsnprintf(), SCIPvarGetLbGlobal(), SCIPvarGetUbGlobal(), and TRUE.

Referenced by printSignpowerCons().

static SCIP_RETCODE printSignpowerCons ( SCIP *  scip, FILE *  file, const char *  rowname, SCIP_VAR *  nonlinvar, SCIP_VAR *  linvar, SCIP_Real  exponent, SCIP_Real  offset, SCIP_Real  coeflinear, SCIP_Real  lhs, SCIP_Real  rhs, SCIP_Bool  transformed, SCIP_Bool  signpowerallowed, SCIP_Bool *  nsmooth  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
nonlinvar	nonlinear variable
linvar	linear variable, may be NULL
exponent	exponent of nonlinear variable
offset	offset of nonlinear variable
coeflinear	coefficient of linear variable
lhs	left hand side
rhs	right hand side
transformed	transformed constraint?
signpowerallowed	allowed to use signpower operator in GAMS?
nsmooth	buffer to store whether we printed a nonsmooth function

Definition at line 1284 of file reader_gms.c.

References NULL, printSignpowerRow(), SCIP_CALL, SCIP_OKAY, SCIPisEQ(), and SCIPisInfinity().

Referenced by SCIPwriteGms().

static SCIP_RETCODE printExpr ( SCIP *  scip, FILE *  file, char *  linebuffer, int *  linecnt, SCIP_Bool *  nsmooth, SCIP_Bool  transformed, SCIP_EXPR *  expr, SCIP_VAR **  exprvars  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
linebuffer	line buffer of length GMS_MAX_PRINTLEN
linecnt	number of characters in line so far
nsmooth	buffer to store whether we printed a nonsmooth function
transformed	expression belongs to transformed constraint?
expr	expression to print
exprvars	variables of expression

Definition at line 1333 of file reader_gms.c.

References appendLineWithIndent(), GMS_MAX_PRINTLEN, NULL, printActiveVariables(), SCIP_Bool, SCIP_CALL, SCIP_EXPR_ABS, SCIP_EXPR_CONST, SCIP_EXPR_COS, SCIP_EXPR_DIV, SCIP_EXPR_EXP, SCIP_EXPR_INTPOWER, SCIP_EXPR_LINEAR, SCIP_EXPR_LOG, SCIP_EXPR_MAX, SCIP_EXPR_MIN, SCIP_EXPR_MINUS, SCIP_EXPR_MUL, SCIP_EXPR_PARAM, SCIP_EXPR_PLUS, SCIP_EXPR_POLYNOMIAL, SCIP_EXPR_PRODUCT, SCIP_EXPR_QUADRATIC, SCIP_EXPR_REALPOWER, SCIP_EXPR_SIGN, SCIP_EXPR_SIGNPOWER, SCIP_EXPR_SIN, SCIP_EXPR_SQRT, SCIP_EXPR_SQUARE, SCIP_EXPR_SUM, SCIP_EXPR_TAN, SCIP_EXPR_VARIDX, SCIP_OKAY, SCIP_Real, SCIPerrorMessage, SCIPexprGetChildren(), SCIPexprGetIntPowerExponent(), SCIPexprGetLinearCoefs(), SCIPexprGetLinearConstant(), SCIPexprGetMonomialChildIndices(), SCIPexprGetMonomialCoef(), SCIPexprGetMonomialExponents(), SCIPexprGetMonomialNFactors(), SCIPexprGetMonomials(), SCIPexprGetNChildren(), SCIPexprGetNMonomials(), SCIPexprGetNQuadElements(), SCIPexprGetOperator(), SCIPexprGetOpIndex(), SCIPexprGetOpReal(), SCIPexprGetPolynomialConstant(), SCIPexprGetQuadConstant(), SCIPexprGetQuadElements(), SCIPexprGetQuadLinearCoefs(), SCIPexprGetRealPowerExponent(), SCIPexprGetSignPowerExponent(), SCIPexpropGetName(), SCIPgetBoolParam(), SCIPround(), SCIPsnprintf(), SCIPwarningMessage(), and TRUE.

Referenced by printNonlinearRow().

static SCIP_RETCODE printNonlinearRow ( SCIP *  scip, FILE *  file, const char *  rowname, const char *  rownameextension, const char *  type, int  nlinvars, SCIP_VAR **  linvars, SCIP_Real *  lincoeffs, int  nexprtrees, SCIP_EXPRTREE **  exprtrees, SCIP_Real *  exprtreecoefs, SCIP_Real  rhs, SCIP_Bool  transformed, SCIP_Bool *  nsmooth  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
rownameextension	row name extension
type	row type ("=e=", "=l=", or "=g=")
nlinvars	number of linear terms
linvars	variables in linear part
lincoeffs	coefficients of variables in linear part
nexprtrees	number of expression trees
exprtrees	expression trees
exprtreecoefs	expression tree coefficients
rhs	right hand side
transformed	transformed constraint?
nsmooth	buffer to store whether we printed a nonsmooth function

Definition at line 1732 of file reader_gms.c.

References appendLine(), appendLineWithIndent(), clearLine(), endLine(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, NULL, printActiveVariables(), printConformName(), printExpr(), SCIP_CALL, SCIP_OKAY, SCIPexprtreeGetRoot(), SCIPexprtreeGetVars(), SCIPisZero(), and SCIPsnprintf().

Referenced by printNonlinearCons().

static SCIP_RETCODE printNonlinearCons ( SCIP *  scip, FILE *  file, const char *  rowname, int  nlinvars, SCIP_VAR **  linvars, SCIP_Real *  lincoeffs, int  nexprtrees, SCIP_EXPRTREE **  exprtrees, SCIP_Real *  exprtreecoefs, SCIP_Real  lhs, SCIP_Real  rhs, SCIP_Bool  transformed, SCIP_Bool *  nsmooth  )

static

Parameters

scip	SCIP data structure
file	output file (or NULL for standard output)
rowname	row name
nlinvars	number of linear terms
linvars	variables in linear part
lincoeffs	coefficients of variables in linear part
nexprtrees	number of expression trees
exprtrees	expression trees
exprtreecoefs	expression tree coefficients
lhs	left hand side
rhs	right hand side
transformed	transformed constraint?
nsmooth	buffer to store whether we printed a nonsmooth function

Definition at line 1812 of file reader_gms.c.

References NULL, printNonlinearRow(), SCIP_CALL, SCIP_OKAY, SCIPisEQ(), and SCIPisInfinity().

Referenced by SCIPwriteGms().

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

static

method check if the variable names are not longer than GMS_MAX_NAMELEN

Parameters

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

Definition at line 1861 of file reader_gms.c.

References badchars, GMS_MAX_NAMELEN, NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIPgetBoolParam(), SCIPinfoMessage(), SCIPvarGetName(), and SCIPwarningMessage().

Referenced by SCIPwriteGms().

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

static

method check if the constraint names are not longer than GMS_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 1920 of file reader_gms.c.

References badchars, GMS_MAX_NAMELEN, NULL, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetName(), SCIPconsIsEnabled(), SCIPconsIsTransformed(), SCIPgetBoolParam(), SCIPgetLhsLinear(), SCIPgetLhsQuadratic(), SCIPgetRhsQuadratic(), SCIPinfoMessage(), SCIPisEQ(), and SCIPwarningMessage().

Referenced by SCIPwriteGms().

static SCIP_DECL_READERCOPY ( readerCopyGms  )

static

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

Definition at line 2013 of file reader_gms.c.

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

static SCIP_DECL_READERWRITE ( readerWriteGms  )

static

problem writing method of reader

Definition at line 2129 of file reader_gms.c.

References SCIP_CALL, SCIP_OKAY, and SCIPwriteGms().

SCIP_RETCODE SCIPincludeReaderGms

(

SCIP *

scip

)

includes the gms file reader in SCIP

Parameters

scip	SCIP data structure

Definition at line 2156 of file reader_gms.c.

References FALSE, GMS_DEFAULT_BIGM, GMS_DEFAULT_INDICATORREFORM, GMS_DEFAULT_SIGNPOWER, NULL, READER_DESC, READER_EXTENSION, READER_NAME, SCIP_CALL, SCIP_OKAY, SCIP_REAL_MAX, SCIPaddBoolParam(), SCIPaddCharParam(), SCIPaddRealParam(), SCIPincludeReaderBasic(), SCIPsetReaderCopy(), SCIPsetReaderFree(), SCIPsetReaderRead(), and SCIPsetReaderWrite().

Referenced by SCIP_DECL_READERCOPY(), and SCIPincludeDefaultPlugins().

SCIP_RETCODE SCIPwriteGms	(	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 gms 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 2203 of file reader_gms.c.

References appendLine(), checkConsnames(), checkVarnames(), clearLine(), endLine(), FALSE, GMS_MAX_LINELEN, GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, isGAMSprintableSOC(), NULL, printActiveVariables(), printConformName(), printIndicatorCons(), printLinearCons(), printNonlinearCons(), printQuadraticCons(), printSignpowerCons(), printSOCCons(), printSOSCons(), SCIP_Bool, SCIP_CALL, SCIP_Longint, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIP_Real, SCIP_SETPPCTYPE_COVERING, SCIP_SETPPCTYPE_PACKING, SCIP_SETPPCTYPE_PARTITIONING, SCIP_STAGE_EXITPRESOLVE, SCIP_STAGE_INITPRESOLVE, SCIP_SUCCESS, SCIP_VARSTATUS_NEGATED, SCIP_VARSTATUS_ORIGINAL, SCIP_VARTYPE_IMPLINT, SCIPallocBufferArray, SCIPceil(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetName(), SCIPconsIsEnabled(), SCIPconsIsTransformed(), SCIPexprgraphGetTree(), SCIPexprtreeFree(), SCIPexprtreeGetMaxDegree(), SCIPfeasFloor(), SCIPfloor(), SCIPfreeBufferArray, SCIPgetBilinTermsQuadratic(), SCIPgetBinaryVarIndicator(), SCIPgetBoolParam(), SCIPgetCapacityKnapsack(), SCIPgetCoefLinearAbspower(), SCIPgetCoefsLinearVarsQuadratic(), SCIPgetExponentAbspower(), SCIPgetExprgraphNodeNonlinear(), SCIPgetExprgraphNonlinear(), SCIPgetExprtreeBivariate(), SCIPgetExprtreeCoefsNonlinear(), SCIPgetExprtreesNonlinear(), SCIPgetLhsAbspower(), SCIPgetLhsBivariate(), SCIPgetLhsCoefsSOC(), SCIPgetLhsConstantSOC(), SCIPgetLhsLinear(), SCIPgetLhsNonlinear(), SCIPgetLhsOffsetsSOC(), SCIPgetLhsQuadratic(), SCIPgetLhsVarbound(), SCIPgetLhsVarsSOC(), SCIPgetLinearCoefBivariate(), SCIPgetLinearCoefsNonlinear(), SCIPgetLinearVarAbspower(), SCIPgetLinearVarBivariate(), SCIPgetLinearVarsNonlinear(), SCIPgetLinearVarsQuadratic(), SCIPgetNBilinTermsQuadratic(), SCIPgetNExprtreesNonlinear(), SCIPgetNLhsVarsSOC(), SCIPgetNLinearVarsNonlinear(), SCIPgetNLinearVarsQuadratic(), SCIPgetNonlinearVarAbspower(), SCIPgetNQuadVarTermsQuadratic(), SCIPgetNVarsKnapsack(), SCIPgetNVarsLinear(), SCIPgetNVarsLogicor(), SCIPgetNVarsSetppc(), SCIPgetNVarsSOS1(), SCIPgetNVarsSOS2(), SCIPgetOffsetAbspower(), SCIPgetQuadVarTermsQuadratic(), SCIPgetRhsAbspower(), SCIPgetRhsBivariate(), SCIPgetRhsCoefSOC(), SCIPgetRhsLinear(), SCIPgetRhsNonlinear(), SCIPgetRhsOffsetSOC(), SCIPgetRhsQuadratic(), SCIPgetRhsVarbound(), SCIPgetRhsVarSOC(), SCIPgetSlackVarIndicator(), SCIPgetStage(), SCIPgetTypeSetppc(), SCIPgetValsLinear(), SCIPgetVarsKnapsack(), SCIPgetVarsLinear(), SCIPgetVarsLogicor(), SCIPgetVarsSetppc(), SCIPgetVarsSOS1(), SCIPgetVarsSOS2(), SCIPgetVarVarbound(), SCIPgetVbdcoefVarbound(), SCIPgetVbdvarVarbound(), SCIPgetWeightsKnapsack(), SCIPinfinity(), SCIPinfoMessage(), SCIPisEQ(), SCIPisFeasEQ(), SCIPisInfinity(), SCIPisZero(), SCIPprintCons(), SCIPsnprintf(), SCIPvarGetLbLocal(), SCIPvarGetLbOriginal(), SCIPvarGetName(), SCIPvarGetObj(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarGetUbLocal(), SCIPvarGetUbOriginal(), SCIPvarIsActive(), SCIPwarningMessage(), and TRUE.

Referenced by SCIP_DECL_READERWRITE().

Variable Documentation

const char badchars[] = "#*+/-@$"

static

Definition at line 72 of file reader_gms.c.

Referenced by checkConsnames(), checkVarnames(), and conformName().