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/*****************************************************************************/
/* lfit.h */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* This file should be included in all external (dynamically linked) library */
/* extensions designed for the `lfit` program. This file provides the object */
/* `lfitfunction` which shall be used to bind the external functions to the */
/* main `lfit` code. The modules must be compiled using the command */
/* gcc ... -fPIC -o module.so module.c ... -shared */
/* (with the additional compilation flags and object modules) */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* (c) 1996, 2002, 2004-2005, 2006, 2007-2008, 2009; */
/* Pal, Andras (apal@szofi.net) */
/*****************************************************************************/
#ifndef __LFIT_H_INCLUDED
#define __LFIT_H_INCLUDED 1
/*****************************************************************************/
#define LFITFUNCTION_NONDIFFERENTIABLE 0x00
#define LFITFUNCTION_DIFFERENTIABLE 0x02
#define LFITFUNCTION_LINEAR 0x03
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
typedef struct
{ char *name; /* name of the given function */
int flags; /* see LFITFUNCTION_* above */
int nvar; /* number of adjustable variables */
int nidv; /* number of independent parameters */
int (*function) /* the callback function itself: */
(double *vars, /* - array of the adj. variables */
double *idvs, /* - array of the indep. param's */
double *ret, /* - return value */
double *diff); /* - partial derivatives */
} lfitfunction;
/*****************************************************************************/
typedef struct
{ char *description;
} psnfunctinfo;
typedef struct
{ char *name;
int type,major,minor;
int argnum,precedency,associativity;
int (*funct)(double *);
short *diff;
char *string;
int strength,affixation;
psnfunctinfo *info;
} psnlfit;
/*****************************************************************************/
#endif
/*****************************************************************************/
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