pounder_test/dsp/benches/trig.rs

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2020-12-18 06:01:57 +08:00
use core::f32::consts::PI;
use criterion::{black_box, criterion_group, criterion_main, Criterion};
2021-01-22 18:38:38 +08:00
use dsp::{atan2, cossin};
2020-12-18 06:01:57 +08:00
fn atan2_bench(c: &mut Criterion) {
let xi = (10 << 16) as i32;
let xf = xi as f32 / i32::MAX as f32;
let yi = (-26_328 << 16) as i32;
let yf = yi as f32 / i32::MAX as f32;
c.bench_function("atan2(y, x)", |b| {
b.iter(|| atan2(black_box(yi), black_box(xi)))
});
c.bench_function("y.atan2(x)", |b| {
b.iter(|| black_box(yf).atan2(black_box(xf)))
});
}
fn cossin_bench(c: &mut Criterion) {
let zi = -0x7304_2531_i32;
let zf = zi as f32 / i32::MAX as f32 * PI;
c.bench_function("cossin(zi)", |b| b.iter(|| cossin(black_box(zi))));
c.bench_function("zf.sin_cos()", |b| b.iter(|| black_box(zf).sin_cos()));
}
criterion_group!(benches, atan2_bench, cossin_bench);
criterion_main!(benches);