type_reader.h File Reference

Detailed Description

type definitions for input file readers

Author

Tobias Achterberg

Definition in file type_reader.h.

#include "scip/def.h"
#include "scip/type_rational.h"
#include "scip/type_cons.h"
#include "scip/type_retcode.h"
#include "scip/type_result.h"
#include "scip/type_scip.h"
#include "scip/type_var.h"

Go to the source code of this file.

Macros
#define	SCIP_DECL_READERCOPY(x)   SCIP_RETCODE x (SCIP* scip, SCIP_READER* reader)
#define	SCIP_DECL_READERFREE(x)   SCIP_RETCODE x (SCIP* scip, SCIP_READER* reader)
#define	SCIP_DECL_READERREAD(x)   SCIP_RETCODE x (SCIP* scip, SCIP_READER* reader, const char* filename, SCIP_RESULT* result)
#define	SCIP_DECL_READERWRITE(x)

Typedefs
typedef struct SCIP_Reader	SCIP_READER
typedef struct SCIP_ReaderData	SCIP_READERDATA

Macro Definition Documentation

SCIP_DECL_READERCOPY

#define SCIP_DECL_READERCOPY

(

x

)

SCIP_RETCODE x (SCIP* scip, SCIP_READER* reader)

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

input:

• scip : SCIP main data structure
• reader : the reader itself

Definition at line 63 of file type_reader.h.

SCIP_DECL_READERFREE

#define SCIP_DECL_READERFREE

(

x

)

SCIP_RETCODE x (SCIP* scip, SCIP_READER* reader)

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

input:

• scip : SCIP main data structure
• reader : the reader itself

Definition at line 72 of file type_reader.h.

SCIP_DECL_READERREAD

#define SCIP_DECL_READERREAD

(

x

)

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

problem reading method of reader

input:

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

possible return values for *result:

• SCIP_SUCCESS : the reader read the file correctly and created an appropriate problem
• SCIP_DIDNOTRUN : the reader is not responsible for given input file

If the reader detected an error in the input file, it should return with RETCODE SCIP_READERROR or SCIP_NOFILE.

Definition at line 88 of file type_reader.h.

SCIP_DECL_READERWRITE

#define SCIP_DECL_READERWRITE

(

x

)

Value:

      SCIP_RETCODE x (SCIP* scip, SCIP_READER* reader, FILE* file, \
      const char* filename, const char* name, SCIP_PROBDATA* probdata, SCIP_Bool transformed, \
      SCIP_OBJSENSE objsense, SCIP_Real objoffset, SCIP_Real objscale, \
      SCIP_RATIONAL* objoffsetexact, SCIP_RATIONAL* objscaleexact, \
      SCIP_VAR** vars, int nvars, int nbinvars, int nintvars, int nimplvars, int ncontvars, \
      SCIP_VAR** fixedvars, int nfixedvars, int startnvars, \
      SCIP_CONS** conss, int nconss, int maxnconss, int startnconss, \
      SCIP_Bool genericnames, SCIP_RESULT* result)

problem writing method of reader; NOTE: if the parameter "genericnames" is TRUE, then SCIP already set all variable and constraint names to generic names; therefore, this method should always use SCIPvarGetName() and SCIPconsGetName();

input:

• scip : SCIP main data structure
• reader : the reader itself
• file : output file, or NULL if standard output should be used
• filename : name of output file, if available, otherwise NULL
• name : problem name
• probdata : user problem data set by the reader
• transformed : TRUE iff problem is the transformed problem
• objsense : objective sense
• objoffset : objective offset from bound shifting and fixing
• objscale : scalar applied to objective function; external objective value is extobj = objsense * objscale * (intobj + objoffset)
• objoffsetexact : exact objective offset from bound shifting and fixing
• objscaleexact : exact scalar applied to objective function; external objective value is extobjexact = objsense * objscaleexact * (intobjexact + objoffsetexact)
• 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
• fixedvars : array with fixed and aggregated variables
• nfixedvars : number of fixed and aggregated variables in the problem
• startnvars : number of variables existing when problem solving started
• conss : array with constraints of the problem
• nconss : number of constraints in the problem
• maxnconss : maximum number of constraints existing at the same time
• startnconss : number of constraints existing when problem solving started
• genericnames : using generic variable and constraint names?
• result : pointer to store the result of the file reading call

possible return values for *result:

• SCIP_SUCCESS : the reader wrote the file correctly
• SCIP_DIDNOTRUN : the reader is not responsible for given input file

If the reader detected an error while writing the output file, it should return with RETCODE SCIP_WRITEERROR

Definition at line 131 of file type_reader.h.

Typedef Documentation

SCIP_READER

typedef struct SCIP_Reader SCIP_READER

reader data structure

Definition at line 53 of file type_reader.h.

SCIP_READERDATA

typedef struct SCIP_ReaderData SCIP_READERDATA

reader specific data

Definition at line 54 of file type_reader.h.