L5a1c : Cauchy, $χ^{2}$

G01ECF	Computes probabilities for $χ^{2}$ distribution
G01GCF	Computes probabilities for the non-central $χ^{2}$ distribution
G01JCF	Computes probability for a positive linear combination of $χ^{2}$ variables
G01SCF	Computes a vector of probabilities for $χ^{2}$ distribution

L5a1c : Cauchy, χ2