Copied from the C program to compute Kolmogorov's distribution K(n,d) = Prob(D_n < d) where D_n = max(x_1-0/n,x_2-1/n...,x_n-(n-1)/n,1/n-x_1,2/n-x_2,...,n/n-x_n) with x_1<x_2,...<x_n a purported set of n independent uniform [0,1) random variables sorted into increasing order.