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/*
* Copyright (C) 1996-2001, Thomas Andrews
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "tcl_incl.h"
typedef struct {
int count;
double weight;
double sum,sumsquared;
double max, min;
} SDev;
typedef struct {
int count;
double weight;
double maxx, maxy;
double minx, miny;
double sumx,sumy,sumxx,sumyy,sumxy;
} Correlation;
double sdev PROTO((SDev *));
double sdevAverage PROTO((SDev *));
void sdevReset PROTO((SDev *));
void sdevAddData PROTO((SDev *,double,double));
SDev *sdevNew PROTO(());
void sdevFree PROTO((ClientData));
int tcl_rand_cmd (TCLOBJ_PARAMS);
int tcl_sdev_define(TCL_PARAMS);
int tcl_correlation_define(TCLOBJ_PARAMS);
Correlation *correlationNew PROTO(());
void corrAddData PROTO((Correlation *,double,double,double));
double corrResult PROTO((Correlation *corr));
void corrReset PROTO((Correlation *));
void correlationFree PROTO((ClientData));
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