@rnd_uniform_float(a:float, b:float)
returns a generator giving float values according to a uniform distribution P:

    P(x | a, b) = 1/(b - a),   a  ≤ x < b

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