@rnd_gamma(α:float)

returns a random generator that produces floating-point values according to a gamma distribution P:

   P(x | α) = x^(α-1) / Γ(α),    x ≥ 0.

See @rnd_bernoulli for a description of random generators.

See also Random Generators @rand    @rand_int    @random    @rnd_bernoulli    @rnd_binomial    @rnd_exponential    @rnd_gamma    @rnd_geometric    @rnd_normal    @rnd_uniform_float    @rnd_uniform_int