/*
 * resample.h - based on code from version 3.6-0 of the Eclipse library (ESO)
 *   by Nicolas Devillard
 *
 * see http://www.eso.org/eclipse for further details
 */
#ifndef _PDL_RESAMPLE_H_
#define _PDL_RESAMPLE_H_
#include <stdlib.h>
#include <math.h>
#ifndef NULL
#define NULL (0L)
#endif
/* Number of tabulations in kernel  */
#define TABSPERPIX      (1000)
#define KERNEL_WIDTH    (2.0)
#define KERNEL_SAMPLES  (1+(int)(TABSPERPIX * KERNEL_WIDTH))
#define TANH_STEEPNESS  (5.0)
#ifndef PI_NUMB
#define PI_NUMB     (3.1415926535897932384626433832795)
#endif
#ifndef M_PI
#define M_PI PI_NUMB
#endif
/* declare functions */
double
poly2d_compute( int ncoeff, double *c, double u, double *vpow );
double   *
generate_interpolation_kernel(char * kernel_type);
#endif