Normal probability distribution function.
Normal(g,mu,sigma2)
Generates a random variate following the Normal probability distribution, with mean mu and variance sigma2.
The algorithm used for this distribution is the same that the one implemented in SIMAN, and is detailed in:
J.D. Beasley and S.G. Springer (1977), The Percentage Points of the Normal Distribution, Applied Statistics, vol. 26, pp: 118-121.
(u,g) := Normal(g,0,1);
function Normal extends Var; end Normal;