Scippy

    SCIP

    Solving Constraint Integer Programs

    Functions
    presol_sparsify.h File Reference

    Detailed Description

    cancel non-zeros of the constraint matrix

    Author
    Dieter Weninger
    Leona Gottwald
    Ambros Gleixner

    This presolver attempts to cancel non-zero entries of the constraint matrix by adding scaled equalities to other constraints.

    Definition in file presol_sparsify.h.

    #include "scip/def.h"
    #include "scip/type_retcode.h"
    #include "scip/type_scip.h"

    Go to the source code of this file.

    Functions

    SCIP_RETCODE SCIPincludePresolSparsify (SCIP *scip)
     

    Function Documentation

    ◆ SCIPincludePresolSparsify()

    SCIP_RETCODE SCIPincludePresolSparsify ( SCIP *  scip)

    creates the sparsify presolver and includes it in SCIP

    Parameters
    scipSCIP data structure

    Definition at line 1053 of file presol_sparsify.c.

    References DEFAULT_CANCELLINEAR, DEFAULT_ENABLECOPY, DEFAULT_MAX_BIN_FILLIN, DEFAULT_MAX_CONT_FILLIN, DEFAULT_MAX_INT_FILLIN, DEFAULT_MAXCONSIDEREDNONZEROS, DEFAULT_MAXNONZEROS, DEFAULT_MAXRETRIEVEFAC, DEFAULT_PRESERVEINTCOEFS, DEFAULT_ROWSORT, DEFAULT_WAITINGFAC, FALSE, NULL, PRESOL_DESC, PRESOL_MAXROUNDS, PRESOL_NAME, PRESOL_PRIORITY, PRESOL_TIMING, SCIP_CALL, SCIP_OKAY, SCIP_REAL_MAX, SCIPaddBoolParam(), SCIPaddCharParam(), SCIPaddIntParam(), SCIPaddRealParam(), SCIPallocBlockMemory, SCIPincludePresolBasic(), SCIPsetPresolCopy(), SCIPsetPresolFree(), SCIPsetPresolInit(), and TRUE.

    Referenced by SCIP_DECL_PRESOLCOPY(), and SCIPincludeDefaultPlugins().