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Merge branch 'uint_opt' of github.com:ethcore/parity into uint_opt

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This commit is contained in:
Tomasz Drwięga 2016-03-09 11:32:39 +01:00
commit 9c714688cd
1 changed files with 10 additions and 3 deletions
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13
util/benches/bigint.rs
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@ -50,9 +50,16 @@ fn u256_sub(b: &mut Bencher) {
fn u512_sub(b: &mut Bencher) {
b.iter(|| {
let n = black_box(10000);
(0..n).fold(U512([rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>(),
rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>()]),
|old, new| { old.overflowing_sub(U512([0, 0, 0, 0, 0, 0, 0, new])).0 })
(0..n).fold(
U512([
rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>(),
rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>(), rand::random::<u64>()
]),
|old, new| {
let p = new % 2;
old.overflowing_sub(U512([p, p, p, p, p, p, p, new])).0
}
)
});
}