radfn.h

it is tree Dtree algorithm. so see it. it is in c++

/*----------------------------------------------------------------------
  File    : radfn.h
  Contents: radial function management
            (for clustering, radial basis function networks,
             learning vector quantization etc.)
  Author  : Christian Borgelt
  History : 15.08.2003 file created from file cluster1.c
            24.02.2004 parameterization changed
            13.08.2004 argument 'a' changed to const
----------------------------------------------------------------------*/
#ifndef __RADFN__
#define __RADFN__

/*----------------------------------------------------------------------
  Type Definitions
----------------------------------------------------------------------*/
typedef double RADFN (double d2, const double *a);

/*----------------------------------------------------------------------
  Functions
----------------------------------------------------------------------*/
extern double rf_cauchy (double d2, const double *a);
extern double rf_gauss  (double d2, const double *a);

#endif