extern SEXP

    PL2_expectationSym,

    PL2_covarianceSym,

    PL2_linearstatisticSym,

    PL2_expcovinfSym,

    PL2_expcovinfssSym,

    PL2_sumweightsSym,

    PL2_dimensionSym,

    PL2_MPinvSym,

    PL2_rankSym,

    PL2_svdmemSym,

    PL2_methodSym,

    PL2_jobuSym, 

    PL2_jobvSym, 

    PL2_uSym,

    PL2_vSym,

    PL2_sSym,

    PL2_pSym,

    PL2_teststatSym,

    PL2_pvalueSym,

    PL2_tolSym,

    PL2_maxptsSym,

    PL2_absepsSym,

    PL2_relepsSym,

    PL2_minsplitSym,

    PL2_minbucketSym,

    PL2_minprobSym,

    PL2_variablesSym, 

    PL2_transformationsSym, 

    PL2_is_nominalSym, 

    PL2_is_ordinalSym, 

    PL2_is_censoredSym, 

    PL2_orderingSym, 

    PL2_levelsSym, 

    PL2_scoresSym, 

    PL2_has_missingsSym, 

    PL2_whichNASym, 

    PL2_test_trafoSym, 

    PL2_predict_trafoSym, 

    PL2_nobsSym, 

    PL2_ninputsSym,

    PL2_linexpcov2sampleSym, 

    PL2_weightsSym, 

    PL2_varmemorySym,

    PL2_linexpcov2sampleSym, 

    PL2_weightsSym, 

    PL2_varmemorySym, 

    PL2_responsesSym, 

    PL2_inputsSym,

    PL2_testtypeSym, 

    PL2_nresampleSym,

    PL2_varctrlSym, 

    PL2_splitctrlSym, 

    PL2_gtctrlSym,

    PL2_mincriterionSym,

    PL2_randomsplitsSym,

    PL2_mtrySym,

    PL2_dontuseSym,

    PL2_dontusetmpSym,

    PL2_stumpSym,

    PL2_tgctrlSym,

    PL2_ntreeSym,

    PL2_replaceSym,

    PL2_fractionSym,

    PL2_traceSym,

    PL2_dropcriterionSym,

    PL2_compressSym,

    PL2_expandSym,

    PL2_varOnceSym;

int get_dimension(SEXP object);

int get_teststat(SEXP object);

double get_tol(SEXP object);

int get_pvalue(SEXP object);

int get_maxpts(SEXP object);

double get_abseps(SEXP object);

double get_releps(SEXP object);

double get_minsplit(SEXP object);

double get_minprob(SEXP object);

double get_minbucket(SEXP object);

SEXP get_transformation(SEXP object, int variable);

SEXP get_test_trafo(SEXP object);

SEXP get_predict_trafo(SEXP object);

SEXP get_variable(SEXP object, int variable);

int is_nominal(SEXP object, int variable);

int is_ordinal(SEXP object, int variable);

int is_censored(SEXP object, int variable);

int has_missings(SEXP object, int variable);

SEXP get_missings(SEXP object, int variable);

SEXP get_ordering(SEXP object, int variable);

SEXP get_levels(SEXP object, int variable);

SEXP get_scores(SEXP object, int variable); 

SEXP get_whichNA(SEXP object, int variable);

SEXP get_varmemory(SEXP object, int variable);

int get_nobs(SEXP object);

int get_ninputs(SEXP object);

SEXP get_weights(SEXP object);

int get_testtype(SEXP object);

int get_nresample(SEXP object);

SEXP get_varctrl(SEXP object);

SEXP get_splitctrl(SEXP object);

SEXP get_gtctrl(SEXP object);

double get_mincriterion(SEXP object);

int get_randomsplits(SEXP object);

SEXP get_mtry(SEXP object);

SEXP get_dontuse(SEXP object);

SEXP get_dontusetmp(SEXP object);

int get_stump(SEXP object);

int get_maxsurrogate(SEXP object);

SEXP get_tgctrl(SEXP object);

SEXP get_splitstatistics(SEXP object);

int get_savesplitstats(SEXP object);

int check_depth(SEXP object, int depth);

int get_ntree(SEXP object);

int get_replace(SEXP object);

double get_fraction(SEXP object);

int get_trace(SEXP object);

int get_dropcriterion(SEXP object);

SEXP get_compress(SEXP object);

SEXP get_expand(SEXP object);

int get_only_use_variable_once(SEXP object);