baker_map               Baker map
linear_con              Linear congruence map
logistic_map            Logistic map
rbits                   Random Bit generator
rcauchy                 Cauchy distribution
rexp                    Exponentail distribution
rnorm                   Generating numbers form Normal distribution
                        here we use Box Muler transform to obtain
                        normal random variable
runf                    Uniformly Pseudo random number generator
saw_tooth               Saw tooth map
time                    time function
