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#[macro_use]
extern crate bencher;
extern crate btoi;
use bencher::{black_box, Bencher};
fn bench_btou(b: &mut Bencher) {
b.iter(|| assert_eq!(Ok(123_456_789u32), btoi::btou(black_box(b"123456789"))));
}
fn bench_btou_saturating(b: &mut Bencher) {
b.iter(|| {
assert_eq!(
Ok(123_456_789u32),
btoi::btou_saturating(black_box(b"123456789"))
)
});
}
fn bench_small_btou(b: &mut Bencher) {
b.iter(|| assert_eq!(Ok(42u8), btoi::btou(black_box(b"42"))));
}
fn bench_small_btou_saturating(b: &mut Bencher) {
b.iter(|| assert_eq!(Ok(255u8), btoi::btou_saturating(black_box(b"256"))));
}
fn bench_btoi(b: &mut Bencher) {
b.iter(|| assert_eq!(Ok(-123_456_789i32), btoi::btoi(black_box(b"-123456789"))));
}
fn bench_from_str(b: &mut Bencher) {
fn btou_from_str(s: &[u8]) -> Option<u32> {
::std::str::from_utf8(s).ok().and_then(|s| s.parse().ok())
}
b.iter(|| assert_eq!(Some(123_456_789), btou_from_str(black_box(b"123456789"))));
}
fn bench_from_str_unchecked(b: &mut Bencher) {
unsafe fn btou_from_str_unchecked(s: &[u8]) -> Option<u32> {
::std::str::from_utf8_unchecked(s).parse().ok()
}
b.iter(|| {
assert_eq!(Some(123_456_789), unsafe {
btou_from_str_unchecked(black_box(b"123456789"))
})
});
}
fn bench_small_from_str(b: &mut Bencher) {
fn btou_from_str(s: &[u8]) -> Option<u8> {
::std::str::from_utf8(s).ok().and_then(|s| s.parse().ok())
}
b.iter(|| assert_eq!(Some(42u8), btou_from_str(black_box(b"42"))));
}
fn bench_small_from_str_unchecked(b: &mut Bencher) {
unsafe fn btou_from_str_unchecked(s: &[u8]) -> Option<u8> {
::std::str::from_utf8_unchecked(s).parse().ok()
}
b.iter(|| {
assert_eq!(Some(42u8), unsafe {
btou_from_str_unchecked(black_box(b"42"))
})
});
}
benchmark_group!(
benches,
bench_btou,
bench_btou_saturating,
bench_btoi,
bench_from_str,
bench_from_str_unchecked,
bench_small_btou,
bench_small_btou_saturating,
bench_small_from_str,
bench_small_from_str_unchecked
);
benchmark_main!(benches);
|
