/** creates the dualagg presolver and includes it in SCIP */
SCIP_RETCODE SCIPincludePresolDualagg(
SCIP* scip /**< SCIP data structure */
)
{
SCIP_PRESOL* presol;
/* include presolver */
SCIP_CALL( SCIPincludePresolBasic(scip, &presol, PRESOL_NAME, PRESOL_DESC, PRESOL_PRIORITY, PRESOL_MAXROUNDS,
PRESOL_TIMING, presolExecDualagg, NULL) );
return SCIP_OKAY;
}
/** creates the inttobinary presolver and includes it in SCIP */
SCIP_RETCODE SCIPincludePresolInttobinary(
SCIP* scip /**< SCIP data structure */
)
{
SCIP_PRESOLDATA* presoldata;
SCIP_PRESOL* presolptr;
/* create inttobinary presolver data */
presoldata = NULL;
/* include presolver */
SCIP_CALL( SCIPincludePresolBasic(scip, &presolptr, PRESOL_NAME, PRESOL_DESC, PRESOL_PRIORITY, PRESOL_MAXROUNDS, PRESOL_DELAY,
presolExecInttobinary,
presoldata) );
assert(presolptr != NULL);
SCIP_CALL( SCIPsetPresolCopy(scip, presolptr, presolCopyInttobinary) );
return SCIP_OKAY;
}
/** creates the boundshift presolver and includes it in SCIP */
SCIP_RETCODE SCIPincludePresolBoundshift(
SCIP* scip /**< SCIP data structure */
)
{
SCIP_PRESOLDATA* presoldata;
SCIP_PRESOL* presolptr;
/* create boundshift presolver data */
SCIP_CALL( SCIPallocMemory(scip, &presoldata) );
initPresoldata(presoldata);
/* include presolver */
SCIP_CALL( SCIPincludePresolBasic(scip, &presolptr, PRESOL_NAME, PRESOL_DESC, PRESOL_PRIORITY, PRESOL_MAXROUNDS, PRESOL_DELAY,
presolExecBoundshift,
presoldata) );
assert(presolptr != NULL);
SCIP_CALL( SCIPsetPresolCopy(scip, presolptr, presolCopyBoundshift) );
SCIP_CALL( SCIPsetPresolFree(scip, presolptr, presolFreeBoundshift) );
/* add probing presolver parameters */
SCIP_CALL( SCIPaddLongintParam(scip,
"presolving/boundshift/maxshift",
"absolute value of maximum shift",
&presoldata->maxshift, TRUE, DEFAULT_MAXSHIFT, 0LL, SCIP_LONGINT_MAX, NULL, NULL) );
SCIP_CALL( SCIPaddBoolParam(scip,
"presolving/boundshift/flipping",
"is flipping allowed (multiplying with -1)?",
&presoldata->flipping, TRUE, DEFAULT_FLIPPING, NULL, NULL) );
SCIP_CALL( SCIPaddBoolParam(scip,
"presolving/boundshift/integer",
"shift only integer ranges?",
&presoldata->integer, TRUE, DEFAULT_INTEGER, NULL, NULL) );
return SCIP_OKAY;
}