Elliptic Integral Degenerate RC

      x        y           actual            rc(x,y)
    0.10     0.10       3.162278e+00       3.162278e+00
    0.00     0.25       3.141593e+00       3.141593e+00
    0.06     0.12       3.141593e+00       3.141593e+00
    2.25     2.00       6.931472e-01       6.931472e-01
  100.00   100.00       1.000000e-01       1.000000e-01