Struct Random

pub struct Random { /* private fields */ }

| A very simple random number generator. Not | especially good at generating truly random | bits, but good enough for our needs in this | package.

Implementations

impl Random

pub fn new(s: u32) -> Random

pub fn next(&mut self) -> u32

pub fn uniform(&mut self, n: i32) -> u32

| Returns a uniformly distributed value in the | range [0..n-1] | | REQUIRES: n > 0

pub fn one_in(&mut self, n: i32) -> bool

| Randomly returns true ~“1/n” of the time, and | false otherwise. | | REQUIRES: n > 0

pub fn skewed(&mut self, max_log: i32) -> u32

| Skewed: pick “base” uniformly from range | [0,max_log] and then return “base” random | bits. The effect is to pick a number in the | range [0,2^max_log-1] with exponential bias | towards smaller numbers.