libgretl1-dev 1.9.6-1build1 / usr / include / gretl / gretl_utils.h

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/* 
 *  gretl -- Gnu Regression, Econometrics and Time-series Library
 *  Copyright (C) 2001 Allin Cottrell and Riccardo "Jack" Lucchetti
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */

#ifndef GRETL_UTILS_H
#define GRETL_UTILS_H

#include "libgretl.h"

#include <float.h>
#include <limits.h>

#define floateq(x, y)  (fabs((x) - (y)) < DBL_EPSILON)
#define floatneq(x, y) (fabs((x) - (y)) > DBL_EPSILON)
#define floatgt(x, y)  ((x) - (y) > DBL_EPSILON)
#define floatlt(x, y)  ((y) - (x) > DBL_EPSILON)

#define ok_int(x) (x <= (double) INT_MAX && x >= (double) INT_MIN)

enum {
    SESSION_CLEAR_ALL,
    SESSION_CLEAR_DATASET,
    SESSION_CLEAR_OTHER
};

void libgretl_init (void);

void libgretl_session_cleanup (int mode);

void libgretl_cleanup (void);

double date (int nt, int pd, const double sd0);

/* checks on variables */

int gretl_isdummy (int t1, int t2, const double *x);

int gretl_iszero (int t1, int t2, const double *x);

int gretl_isconst (int t1, int t2, const double *x);

int gretl_isunits (int t1, int t2, const double *x);

int gretl_isint (int t1, int t2, const double *x);

int gretl_iscount (int t1, int t2, const double *x);

int gretl_isdiscrete (int t1, int t2, const double *x);

int gretl_is_oprobit_ok (int t1, int t2, const double *x);

int true_const (int v, const DATASET *dset);

/* setting observations */

char *format_obs (char *obs, int maj, int min, int pd);

int set_obs (const char *line, DATASET *dset, gretlopt opt);

/* sorting and comparison */

int gretl_compare_doubles (const void *a, const void *b);

int gretl_inverse_compare_doubles (const void *a, const void *b);

int count_distinct_values (const double *x, int n);

int count_distinct_int_values (const int *x, int n);

int rearrange_id_array (double *x, int m, int n);

int gretl_compare_ints (const void *a, const void *b);

/* miscellaneous */

void printlist (const int *list, const char *msg);

double gretl_double_from_string (const char *s, int *err);

int gretl_int_from_string (const char *s, int *err);

int positive_int_from_string (const char *s);

int varnum_from_string (const char *str, DATASET *dset);

GretlType gretl_type_from_name (const char *s, const DATASET *dset);

double *copyvec (const double *src, int n);

void doubles_array_free (double **X, int m);

double **doubles_array_new (int m, int n);

double **doubles_array_new0 (int m, int n);

int doubles_array_adjust_length (double **X, int m, int new_n);

double **data_array_from_model (const MODEL *pmod, double **Z, 
				int missv);

int ijton (int i, int j, int nrows);

int transcribe_array (double *targ, const double *src, 
		      const DATASET *dset); 

int gretl_copy_file (const char *src, const char *dest);

int gretl_delete_var_by_name (const char *s, PRN *prn);

#ifndef WIN32
int gretl_spawn (char *cmdline);
#endif

/* model selection criteria */

int gretl_calculate_criteria (double ess, int n, int k,
			      double *ll, double *aic, double *bic, 
			      double *hqc);

int ls_criteria (MODEL *pmod);

/* hypothesis tests mechanism */

int get_last_test_type (void);

void record_test_result (double teststat, double pval, char *blurb);

void record_matrix_test_result (gretl_matrix *tests, 
				gretl_matrix *pvals);

void record_LR_test_result (double teststat, double pval, double lnl,
			    char *blurb);

double get_last_test_statistic (char *blurb);

double get_last_pvalue (char *blurb);

double get_last_lnl (char *blurb);

gretl_matrix *get_last_test_matrix (int *err);

gretl_matrix *get_last_pvals_matrix (int *err);

/* timer */

double gretl_stopwatch (void);

#endif /* GRETL_UTILS_H */

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