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rdrand 0.5.1

An implementation of random number generator based on rdrand and rdseed instructions
Documentation 
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#![feature(test)]
extern crate rand_core;
extern crate rdrand;
extern crate test;

use rand_core::RngCore;
use test::Bencher;

#[bench]
fn bench_u16(b : &mut Bencher) {
    if let Ok(gen) = rdrand::RdRand::new() {
        b.bytes = 2;
        b.iter(|| {
            gen.try_next_u16().unwrap()
        });
    }
}

#[bench]
fn bench_u32(b : &mut Bencher) {
    if let Ok(mut gen) = rdrand::RdRand::new() {
        b.bytes = 4;
        b.iter(|| {
            gen.next_u32()
        });
    }
}

#[bench]
fn bench_u64(b : &mut Bencher) {
    if let Ok(mut gen) = rdrand::RdRand::new() {
        b.bytes = 8;
        b.iter(|| {
            gen.next_u64()
        });
    }
}

#[bench]
fn bench_fill(b : &mut Bencher) {
    if let Ok(mut gen) = rdrand::RdRand::new() {
        let mut buffer = [0; 128];
        b.bytes = 128;
        b.iter(|| {
            gen.fill_bytes(&mut buffer);
            buffer
        });
    }
}