/*  divdifc.h  13 April 1999  */

# define ERROR 0
# define FALSE 0
# define MAX(a,b) ( (a)>(b) ? (a) : (b) ) 
# define MIN(a,b) ( (a)>(b) ? (b) : (a) )
# define PI 3.14159265358979323846264338327950288419716939937510
# define SUCCESS 1
# define TRUE 1

void adddif ( float diftab[], int ntab, float xtab[], float xval, 
       float ytab[], float yval );
void antdif ( float diftab[], float anttab[], int ntab, float xtab[] );
void derdif ( float diftab[], float dertab[], int ntab, float xtab[] );
void dif_to_poly ( float diftab[], int ntab, float xtab[] );
void movdif ( float diftab[], int ntab, float xtab[], float xval );
void outdif ( float diftab[], int ntab, float xtab[], float ytab[] );
void poly_ant_cof ( int n, float poly_cof[], float poly_cof2[] );
void poly_ant_val ( int n, float poly_cof[], float xval, float *yval );
void poly_der_cof ( int n, float poly_cof[], float poly_cof2[] );
void poly_der_val ( int n, float poly_cof[], float xval, float *yval );
void poly_print ( int n, float poly_cof[] );
void poly_val ( int n, float poly_cof[], float xval, float *yval );
void pridif ( float diftab[], int ntab, float xtab[] );
void setdif ( float diftab[], int ntab, float xtab[], float ytab[] );
void valdif ( float diftab[], int ntab, float xtab[], float xval, 
       float *yval );
void zerdif ( float diftab[], int ntab, float xtab[] );