#include "stdio.h"
  #include "7ngin.c"
  main()
  { int m,n,i,ka;
    double eps1,eps2;
    void nginf(int,int,double [],double []);
    void ngins(int,int,double [],double [3][2]);
    static double x[2]={1.0,-1.0};
    m=3; n=2; ka=4; eps1=0.000001; eps2=0.000001;
    i=ngin(m,n,eps1,eps2,x,ka,nginf,ngins);
    printf("\n");
    printf("i=%d\n",i);
    printf("\n");
    for (i=0; i<=1; i++)
      printf("x(%d)=%13.7e\n",i,x[i]);
    printf("\n");
  }

  void nginf(m,n,x,d)
  int m,n;
  double x[],d[];
  { m=m; n=n;
    d[0]=x[0]*x[0]+7.0*x[0]*x[1]+3.0*x[1]*x[1]+0.5;
    d[1]=x[0]*x[0]-2.0*x[0]*x[1]+x[1]*x[1]-1.0;
    d[2]=x[0]+x[1]+1.0;
    return;
  }

  void ngins(m,n,x,p)
  int m,n;
  double x[2],p[3][2];
  { m=m; n=n;
    p[0][0]=2.0*x[0]+7.0*x[1];
    p[0][1]=7.0*x[0]+6.0*x[1];
    p[1][0]=2.0*x[0]-2.0*x[1];
    p[1][1]=-2.0*x[0]+2.0*x[1];
    p[2][0]=1.0;
    p[2][1]=1.0;
    return;
  }