vendor/rdrand/benches/rdrand.rs

   1 #![feature(test)]
   2 extern crate rand_core;
   3 extern crate rdrand;
   4 extern crate test;
   5
   6 use rand_core::RngCore;
   7 use test::Bencher;
   8
   9 #[bench]
  10 fn bench_u16(b : &mut Bencher) {
  11     if let Ok(gen) = rdrand::RdRand::new() {
  12         b.bytes = 2;
  13         b.iter(|| {
  14             gen.try_next_u16().unwrap()
  15         });
  16     }
  17 }
  18
  19 #[bench]
  20 fn bench_u32(b : &mut Bencher) {
  21     if let Ok(mut gen) = rdrand::RdRand::new() {
  22         b.bytes = 4;
  23         b.iter(|| {
  24             gen.next_u32()
  25         });
  26     }
  27 }
  28
  29 #[bench]
  30 fn bench_u64(b : &mut Bencher) {
  31     if let Ok(mut gen) = rdrand::RdRand::new() {
  32         b.bytes = 8;
  33         b.iter(|| {
  34             gen.next_u64()
  35         });
  36     }
  37 }
  38
  39 #[bench]
  40 fn bench_fill(b : &mut Bencher) {
  41     if let Ok(mut gen) = rdrand::RdRand::new() {
  42         let mut buffer = [0; 128];
  43         b.bytes = 128;
  44         b.iter(|| {
  45             gen.fill_bytes(&mut buffer);
  46             buffer
  47         });
  48     }
  49 }