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 reader and 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

◆ READER_NAME

#define READER_NAME "gmsreader"

Definition at line 55 of file reader_gms.c.

Referenced by SCIP_DECL_READERCOPY(), and SCIPincludeReaderGms().

◆ READER_DESC

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

Definition at line 59 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

◆ READER_EXTENSION

#define READER_EXTENSION "gms"

Definition at line 61 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

◆ GMS_MAX_LINELEN

#define GMS_MAX_LINELEN 256

Definition at line 64 of file reader_gms.c.

Referenced by SCIPwriteGms().

◆ GMS_MAX_PRINTLEN

#define GMS_MAX_PRINTLEN 256

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

Definition at line 65 of file reader_gms.c.

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

◆ GMS_MAX_NAMELEN

#define GMS_MAX_NAMELEN 64

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

Definition at line 66 of file reader_gms.c.

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

◆ GMS_PRINTLEN

#define GMS_PRINTLEN 100

Definition at line 67 of file reader_gms.c.

Referenced by appendLine().

◆ GMS_DEFAULT_BIGM

#define GMS_DEFAULT_BIGM 1e+6

Definition at line 68 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

◆ GMS_DEFAULT_INDICATORREFORM

#define GMS_DEFAULT_INDICATORREFORM 's'

Definition at line 69 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

◆ GMS_DEFAULT_SIGNPOWER

#define GMS_DEFAULT_SIGNPOWER FALSE

Definition at line 70 of file reader_gms.c.

Referenced by SCIPincludeReaderGms().

Function Documentation

◆ 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

scip	SCIP data structure
vars	vars array to get active variables for
scalars	scalars a_1, ..., a_n in linear sum a_1x_1 + ... + a_nx_n + c
nvars	pointer to number of variables and values in vars and vals array
constant	pointer to constant c in linear sum a_1x_1 + ... + a_nx_n + c
transformed	transformed constraint?

Definition at line 80 of file reader_gms.c.

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

Referenced by printActiveVariables(), and printLinearCons().

◆ clearLine()

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 123 of file reader_gms.c.

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

◆ endLine()

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 137 of file reader_gms.c.

References clearLine(), and SCIPinfoMessage().

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

◆ appendLine()

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 159 of file reader_gms.c.

References endLine(), GMS_MAX_PRINTLEN, GMS_PRINTLEN, and SCIPdebugMsg.

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

◆ appendLineWithIndent()

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 193 of file reader_gms.c.

References appendLine().

Referenced by printExpr(), and printNonlinearRow().

◆ conformName()

static void conformName ( char * name )

static

checks string for occurences of bad symbols and replace those by '_'

Parameters

name	string to adjust

Definition at line 210 of file reader_gms.c.

References badchars.

Referenced by printConformName().

◆ 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 234 of file reader_gms.c.

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

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

◆ printActiveVariables()

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 259 of file reader_gms.c.

References appendLine(), getActiveVariables(), GMS_MAX_NAMELEN, GMS_MAX_PRINTLEN, 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().

◆ printLinearRow()

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 414 of file reader_gms.c.

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

Referenced by printLinearCons().

◆ 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 498 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ printQuadraticRow()

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 586 of file reader_gms.c.

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

Referenced by printQuadraticCons().

◆ 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 705 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ isGAMSprintableSOC()

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 770 of file reader_gms.c.

References FALSE, SCIPvarIsActive(), and TRUE.

Referenced by printSOCCons(), and SCIPwriteGms().

◆ printSOCCons()

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 825 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ printIndicatorCons()

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 915 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ printSOSCons()

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 1043 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ printSignpowerRow()

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 1100 of file reader_gms.c.

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

Referenced by printSignpowerCons().

◆ 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 1304 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ printExpr()

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 1353 of file reader_gms.c.

References appendLineWithIndent(), GMS_MAX_PRINTLEN, 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().

◆ 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 1753 of file reader_gms.c.

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

Referenced by printNonlinearCons().

◆ 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 1833 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ checkVarnames()

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 1882 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ checkConsnames()

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 1941 of file reader_gms.c.

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

Referenced by SCIPwriteGms().

◆ SCIP_DECL_READERCOPY()

static SCIP_DECL_READERCOPY ( readerCopyGms )

static

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

Definition at line 2034 of file reader_gms.c.

References FALSE, READER_NAME, SCIP_CALL, SCIP_DECL_READERREAD(), SCIP_DIDNOTRUN, SCIP_ERROR, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_READERROR, SCIP_SUCCESS, SCIP_VERBLEVEL_FULL, SCIPdebugMsg, SCIPerrorMessage, SCIPgetVerbLevel(), SCIPincludeReaderGms(), SCIPreaderGetName(), and SCIPsnprintf().

◆ SCIP_DECL_READERWRITE()

static SCIP_DECL_READERWRITE ( readerWriteGms )

static

problem writing method of reader

Definition at line 2150 of file reader_gms.c.

References SCIP_CALL, SCIP_DECL_READERFREE(), SCIP_OKAY, and SCIPwriteGms().

Variable Documentation

◆ badchars

const char badchars[] = "#*+/-@$[](){}"

static

Definition at line 76 of file reader_gms.c.

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

SCIP

Detailed Description

Macros

Functions

Variables

Macro Definition Documentation

◆ READER_NAME

◆ READER_DESC

◆ READER_EXTENSION

◆ GMS_MAX_LINELEN

◆ GMS_MAX_PRINTLEN

◆ GMS_MAX_NAMELEN

◆ GMS_PRINTLEN

◆ GMS_DEFAULT_BIGM

◆ GMS_DEFAULT_INDICATORREFORM

◆ GMS_DEFAULT_SIGNPOWER

Function Documentation

◆ getActiveVariables()

◆ clearLine()

◆ endLine()

◆ appendLine()

◆ appendLineWithIndent()

◆ conformName()

◆ printConformName()

◆ printActiveVariables()

◆ printLinearRow()

◆ printLinearCons()

◆ printQuadraticRow()

◆ printQuadraticCons()

◆ isGAMSprintableSOC()

◆ printSOCCons()

◆ printIndicatorCons()

◆ printSOSCons()

◆ printSignpowerRow()

◆ printSignpowerCons()

◆ printExpr()

◆ printNonlinearRow()

◆ printNonlinearCons()

◆ checkVarnames()

◆ checkConsnames()

◆ SCIP_DECL_READERCOPY()

◆ SCIP_DECL_READERWRITE()

Variable Documentation

◆ badchars