Example Program Data for nag_conv_ex02
    9                      : n
 (1.00, 2.0)   (0.50, 2.0)
 (1.00, 2.0)   (0.50, 2.0)
 (1.00, 2.0)   (0.50, 2.0)
 (1.00, 2.0)   (0.50, 2.0)
 (1.00, 2.0)   (0.00, 0.0)
 (0.00, 0.0)   (0.00, 0.0)
 (0.00, 0.0)   (0.00, 0.0)
 (0.00, 0.0)   (0.00, 0.0)
 (0.00, 0.0)   (0.00, 0.0) : (x(i),y(i),i=1,n)