pseudo random number generator
```rust extern crate prng; extern crate rng_trait;
use rng_trait::Rng; use prng::Prng;
fn main() { // seeds from an address of a local variable let mut random = Prng::new();
// some random unsigned integer
// random.set_seed(24564764657);
println!("x = {:?}", random.next()); // usize number between 0 and usize MAX
println!("y = {:?}", random.next_f32()); // f32 between 0 and 1
println!("z = {:?}", random.next_f64()); // f64 between 0 and 1
} ```