``Edebug.c''

#include <stdio.h>
#include <math.h>
#include "physics.h"
#include "p480.h"
#include "nrutil.h"

main()
{
  /* Grid information */
  double *r,*dr;
  int N;

  /* Physics vectors */
  double *V;

  /* Working variables */
  int k,match;
  double x;
  double E,E1,E2,tol;

  /* Value of pi */
  double pi;
  pi=4.*atan(1.);

  /* Input energy bounds */
  printf("E1="); scanf("%lf",&E1);
  printf("E2="); scanf("%lf",&E2);
  /* Loop over different input N */
  while (1) {
    printf("Search for energy in range (%20.16f,%20.16f):\n",E1,E2);
    printf("N=");
    scanf("%d",&N);

    /* Allocate NR vectors */
    r=dvector(0,N);
    dr=dvector(0,N);
    V=dvector(0,N);

    /* Construct change of variables information and
       integrand function for computing V_el-nuc */
    for (k=0; k<=N; k++) {
      x=((double) k)/((double) N);
      r[k]=x*x/(1.-x);
      dr[k]=1./(1.-x)/(1.-x)-1.;
      V[k]=-1./r[k];
    }
    /* Special conditions for handling end-points of integration */
    V[0]=0.;
    dr[N]=0.;

    E=rtbisp480(func_Schrodinger,E1,E2,tol=1e-15, 
                match,V,r,dr,N);
    printf("Solution from rtbisp480: E=%20.16f\n",E);

    /* Test of zriddrp480 */
    /* Uncomment lines below when zriddrp480 is ready */
    /* E=zriddrp480(func_Schrodinger,E1,E2,tol=1e-15, */
    /*              match,V,r,dr,N); */
    /* printf("Solution from zriddrp480: E=%20.16f\n",E); */

    /* Clean up vectors before next set is allocated! */
    free_dvector(r,0,N);
    free_dvector(dr,0,N);
    free_dvector(V,0,N);
  }

}