psychopath/sub_crates/trifloat/benches/bench.rs

85 lines
2.2 KiB
Rust

use bencher::{benchmark_group, benchmark_main, black_box, Bencher};
use rand::{rngs::SmallRng, FromEntropy, Rng};
use trifloat::{rgb32, signed48, unsigned32};
//----
fn unsigned32_encode_100_values(bench: &mut Bencher) {
let mut rng = SmallRng::from_entropy();
bench.iter(|| {
let x = rng.gen::<f32>();
let y = rng.gen::<f32>();
let z = rng.gen::<f32>();
for _ in 0..100 {
black_box(unsigned32::encode(black_box((x, y, z))));
}
});
}
fn unsigned32_decode_100_values(bench: &mut Bencher) {
let mut rng = SmallRng::from_entropy();
bench.iter(|| {
let v = rng.gen::<u32>();
for _ in 0..100 {
black_box(unsigned32::decode(black_box(v)));
}
});
}
fn signed48_encode_100_values(bench: &mut Bencher) {
let mut rng = SmallRng::from_entropy();
bench.iter(|| {
let x = rng.gen::<f32>() - 0.5;
let y = rng.gen::<f32>() - 0.5;
let z = rng.gen::<f32>() - 0.5;
for _ in 0..100 {
black_box(signed48::encode(black_box((x, y, z))));
}
});
}
fn signed48_decode_100_values(bench: &mut Bencher) {
let mut rng = SmallRng::from_entropy();
bench.iter(|| {
let v = rng.gen::<u64>() & 0x0000_FFFF_FFFF_FFFF;
for _ in 0..100 {
black_box(signed48::decode(black_box(v)));
}
});
}
fn rgb32_encode_100_values(bench: &mut Bencher) {
let mut rng = SmallRng::from_entropy();
bench.iter(|| {
let y = rng.gen::<f32>();
let x = rng.gen::<f32>();
let z = rng.gen::<f32>();
for _ in 0..100 {
black_box(rgb32::encode(black_box((x, y, z))));
}
});
}
fn rgb32_decode_100_values(bench: &mut Bencher) {
let mut rng = SmallRng::from_entropy();
bench.iter(|| {
let v = rng.gen::<u32>();
for _ in 0..100 {
black_box(rgb32::decode(black_box(v)));
}
});
}
//----
benchmark_group!(
benches,
unsigned32_encode_100_values,
unsigned32_decode_100_values,
signed48_encode_100_values,
signed48_decode_100_values,
rgb32_encode_100_values,
rgb32_decode_100_values,
);
benchmark_main!(benches);