[mlpack-git] [mlpack/mlpack] CNE algorithm (#753)

[Marcus Edel]

> +  return dist(rng);
> +  
> +}
> +
> +// Return a random float between [x, y]
> +double RandFloat(double x, double y) {
> +  boost::random::uniform_real_distribution<> dist(x, y);
> +  return dist(rng);
> +}
> +
> +/**
> + * Definitions of other functions.
> + */
> +
> +// Return the sign of a number.
> +template <typename T> int sgn(T val) {

What about using ``arma::sign(val)`` take a look at: http://arma.sourceforge.net/docs.html#misc_fns for more informations.

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