#include "8spl2.c"
  #include "stdio.h"
  main()
  { int n,m,i;
    double s;
    static double dy[12],ddy[12],z[8],dz[8],ddz[8];
    static double x[12]={0.52,8.0,17.95,28.65,50.65,104.6,
                       156.6,260.7,364.4,468.0,507.0,520.0};
    static double y[12]={5.28794,13.84,20.2,24.9,31.1,36.5,
                         36.6,31.0,20.9,7.8,1.5,0.2};
    static double t[8]={4.0,14.0,30.0,60.0,130.0,230.0,
                        450.0,515.0};
    ddy[0]=-0.279319; ddy[11]=0.011156;
    n=12; m=8;
    printf("\n");
    s=spl2(x,y,n,dy,ddy,t,m,z,dz,ddz);
    printf(
"      x(i)          y(i)          dy(i)         ddy(i)\n");
    for (i=0;i<=11;i++)
   printf("%14.6e%14.6e%14.6e%14.6e\n",x[i],y[i],dy[i],ddy[i]);
    printf("\n");
    printf("s=%e\n",s);
    printf("\n");
    printf(
"      t(i)          z(i)          dz(i)         ddz(i)\n");
    for (i=0;i<=7;i++)
   printf("%14.6e%14.6e%14.6e%14.6e\n",t[i],z[i],dz[i],ddz[i]);
   printf("\n");
  }