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extern crate rand;
use self::rand::{
distributions::{
Uniform,
Distribution,
},
Rng,
};
use array::Array;
pub fn random_from_distribution<T, D>(distr: D, shape: Vec<i32>) -> Array<T>
where T: Copy, D: Distribution<T>
{
let mut rng = rand::thread_rng();
let len: i32 = shape.iter().product();
let data: Vec<T> = rng.sample_iter(&distr).take(len as usize).collect();
return Array::new(data, shape);
}
#[inline]
pub fn random_range<T>(from: T, to: T, shape: Vec<i32>) -> Array<T>
where T: rand::distributions::uniform::SampleUniform + Copy
{
return random_from_distribution(Uniform::new::<T, T>(from, to), shape);
}
#[inline]
pub fn random<T>(shape: Vec<i32>) -> Array<T>
where T: rand::distributions::uniform::SampleUniform + From<u8> + Copy
{
return random_range::<T>(T::from(0), T::from(1), shape);
}