/** prints error message for return code via error message */
void SCIPretcodePrintError(
SCIP_RETCODE retcode /**< SCIP return code causing the error */
)
{
switch( retcode )
{
case SCIP_OKAY:
SCIPmessagePrintError("normal termination");
break;
case SCIP_ERROR:
SCIPmessagePrintError("unspecified error");
break;
case SCIP_NOMEMORY:
SCIPmessagePrintError("insufficient memory error");
break;
case SCIP_READERROR:
SCIPmessagePrintError("read error");
break;
case SCIP_WRITEERROR:
SCIPmessagePrintError("write error");
break;
case SCIP_NOFILE:
SCIPmessagePrintError("file not found error");
break;
case SCIP_FILECREATEERROR:
SCIPmessagePrintError("cannot create file");
break;
case SCIP_LPERROR:
SCIPmessagePrintError("error in LP solver");
break;
case SCIP_NOPROBLEM:
SCIPmessagePrintError("no problem exists");
break;
case SCIP_INVALIDCALL:
SCIPmessagePrintError("method cannot be called at this time in solution process");
break;
case SCIP_INVALIDDATA:
SCIPmessagePrintError("method cannot be called with this type of data");
break;
case SCIP_INVALIDRESULT:
SCIPmessagePrintError("method returned an invalid result code");
break;
case SCIP_PLUGINNOTFOUND:
SCIPmessagePrintError("a required plugin was not found");
break;
case SCIP_PARAMETERUNKNOWN:
SCIPmessagePrintError("the parameter with the given name was not found");
break;
case SCIP_PARAMETERWRONGTYPE:
SCIPmessagePrintError("the parameter is not of the expected type");
break;
case SCIP_PARAMETERWRONGVAL:
SCIPmessagePrintError("the value is invalid for the given parameter");
break;
case SCIP_KEYALREADYEXISTING:
SCIPmessagePrintError("the given key is already existing in table");
break;
case SCIP_MAXDEPTHLEVEL:
SCIPmessagePrintError("maximal branching depth level exceeded");
break;
default:
SCIPmessagePrintError("unknown error code");
break;
}
}
/** creates a presolver */
SCIP_RETCODE SCIPpresolCreate(
SCIP_PRESOL** presol, /**< pointer to store presolver */
SCIP_SET* set, /**< global SCIP settings */
SCIP_MESSAGEHDLR* messagehdlr, /**< message handler */
BMS_BLKMEM* blkmem, /**< block memory for parameter settings */
const char* name, /**< name of presolver */
const char* desc, /**< description of presolver */
int priority, /**< priority of the presolver (>= 0: before, < 0: after constraint handlers) */
int maxrounds, /**< maximal number of presolving rounds the presolver participates in (-1: no limit) */
SCIP_PRESOLTIMING timing, /**< timing mask of the presolver */
SCIP_DECL_PRESOLCOPY ((*presolcopy)), /**< copy method of presolver or NULL if you don't want to copy your plugin into sub-SCIPs */
SCIP_DECL_PRESOLFREE ((*presolfree)), /**< destructor of presolver to free user data (called when SCIP is exiting) */
SCIP_DECL_PRESOLINIT ((*presolinit)), /**< initialization method of presolver (called after problem was transformed) */
SCIP_DECL_PRESOLEXIT ((*presolexit)), /**< deinitialization method of presolver (called before transformed problem is freed) */
SCIP_DECL_PRESOLINITPRE((*presolinitpre)),/**< presolving initialization method of presolver (called when presolving is about to begin) */
SCIP_DECL_PRESOLEXITPRE((*presolexitpre)),/**< presolving deinitialization method of presolver (called after presolving has been finished) */
SCIP_DECL_PRESOLEXEC ((*presolexec)), /**< execution method of presolver */
SCIP_PRESOLDATA* presoldata /**< presolver data */
)
{
char paramname[SCIP_MAXSTRLEN];
char paramdesc[SCIP_MAXSTRLEN];
assert(presol != NULL);
assert(name != NULL);
assert(desc != NULL);
/* the interface change from delay flags to timings cannot be recognized at compile time: Exit with an appropriate
* error message
*/
if( timing < SCIP_PRESOLTIMING_FAST || timing > SCIP_PRESOLTIMING_ALWAYS )
{
SCIPmessagePrintError("ERROR: 'PRESOLDELAY'-flag no longer available since SCIP 3.2, use an appropriate "
"'SCIP_PRESOLTIMING' for <%s> presolver instead.\n", name);
return SCIP_PARAMETERWRONGVAL;
}
SCIP_ALLOC( BMSallocMemory(presol) );
SCIP_ALLOC( BMSduplicateMemoryArray(&(*presol)->name, name, strlen(name)+1) );
SCIP_ALLOC( BMSduplicateMemoryArray(&(*presol)->desc, desc, strlen(desc)+1) );
(*presol)->presolcopy = presolcopy;
(*presol)->presolfree = presolfree;
(*presol)->presolinit = presolinit;
(*presol)->presolexit = presolexit;
(*presol)->presolinitpre = presolinitpre;
(*presol)->presolexitpre = presolexitpre;
(*presol)->presolexec = presolexec;
(*presol)->presoldata = presoldata;
SCIP_CALL( SCIPclockCreate(&(*presol)->setuptime, SCIP_CLOCKTYPE_DEFAULT) );
SCIP_CALL( SCIPclockCreate(&(*presol)->presolclock, SCIP_CLOCKTYPE_DEFAULT) );
(*presol)->initialized = FALSE;
/* add parameters */
(void) SCIPsnprintf(paramname, SCIP_MAXSTRLEN, "presolving/%s/priority", name);
(void) SCIPsnprintf(paramdesc, SCIP_MAXSTRLEN, "priority of presolver <%s>", name);
SCIP_CALL( SCIPsetAddIntParam(set, messagehdlr, blkmem, paramname, paramdesc,
&(*presol)->priority, TRUE, priority, INT_MIN/4, INT_MAX/4,
paramChgdPresolPriority, (SCIP_PARAMDATA*)(*presol)) ); /*lint !e740*/
(void) SCIPsnprintf(paramname, SCIP_MAXSTRLEN, "presolving/%s/maxrounds", name);
SCIP_CALL( SCIPsetAddIntParam(set, messagehdlr, blkmem, paramname,
"maximal number of presolving rounds the presolver participates in (-1: no limit)",
&(*presol)->maxrounds, FALSE, maxrounds, -1, INT_MAX, NULL, NULL) ); /*lint !e740*/
(void) SCIPsnprintf(paramname, SCIP_MAXSTRLEN, "presolving/%s/timing", name);
(void) SCIPsnprintf(paramdesc, SCIP_MAXSTRLEN, "timing mask of presolver <%s> (%u:FAST, %u:MEDIUM, %u:EXHAUSTIVE)",
name, SCIP_PRESOLTIMING_FAST, SCIP_PRESOLTIMING_MEDIUM, SCIP_PRESOLTIMING_EXHAUSTIVE);
SCIP_CALL( SCIPsetAddIntParam(set, messagehdlr, blkmem, paramname, paramdesc,
(int*)&(*presol)->timing, TRUE, (int)timing, (int) SCIP_PRESOLTIMING_FAST, (int) SCIP_PRESOLTIMING_ALWAYS, NULL, NULL) ); /*lint !e740*/
return SCIP_OKAY;
}