Doubt in density map

[bhaskar-anand-iith]

In the paper formula used for density map is as follows: zr (Sj ) = min (1.0, log(N + 1)/64)

But in the code it is:

normalizedCounts = np.minimum(1.0, np.log(counts + 1) / np.log(64))

Are both same? Shouldn't it be like this?:

normalizedCounts = np.minimum(1.0, np.log((counts + 1) / 64))