This kind of constant appears naturally when you approximate some computation, a famous example being Gaussian quadrature (look at x_i values depending on the "

This kind of constant appears naturally when you approximate some computation, a famous example being Gaussian quadrature (look at x_i values depending on the "precision" you want : https://en.m.wikipedia.org/wiki/Gaussian_quadrature https://en.m.wikipedia.org/wiki/Gaussian_quadrature ) I don't know if this code is related to that but just pointing out that seemingly nonsensical constants may appear more than one would thing.