3.5.3.3.5 Foldnorminv

Definition:

x = foldnorminv(p,mu,sigma) computes the deviate x, associated with the given lower tail probability, p, of the folded normal distribution, with distribution parameters mu and sigma.

Parameters:

p (input, double): the probability, $p$ , from the required folded Normal distribution. $0<p<1$
mu (input, double): mean of the associated folded normal distribution .
sigma(input, double): standard deviation of the associated folded normal distribution.