#include "math.h"
  #include "stdio.h"
  #include "7cmtc.c"
  main()
  { int m;
    double x,y,b,eps,cmtcf(double,double);
    x=0.5; y=0.5; b=1.0; m=10; eps=0.00001;
    cmtc(&x,&y,b,m,eps,cmtcf);
    printf("\n");
    printf("z=%e +j %e\n",x,y);
    printf("\n");
  }

  double cmtcf(x,y)
  double x,y;
  { double u,v,z;
    u=x*x-y*y-6.0*x+13.0;
    v=2.0*x*y-6.0*y;
    z=sqrt(u*u+v*v);
    return(z);
  }