example_hb.c

/*
 * example_hb.c
 * 
 * Copyright 2011 Fernando Pujaico Rivera <fernando.pujaico.rivera@gmail.com>
 * 
 * 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., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 * 
 */
    
#include <stdio.h>
#include <stdlib.h>
#include <pds/pdsmath.h>
    
int main(int argc, char** argv)
{
        double x,y,z;
    
        for(x=0.0001;x<0.5;x=x+0.05)
        {
                y=pds_hb(x);
                z=pds_hbinv(y);         
    
                printf("x=%f\ty=hb(x)=%f\n",x,y);
                printf("z=hbinv(y)=%f\t",z);
                printf("ERROR=%f ppm\n",(x-z)*1000000/x);
        }
    
        return EXIT_SUCCESS;
}