library/coretests/benches/num/flt2dec/mod.rs


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mod strategy {
    mod dragon;
    mod grisu;
}

use core::num::flt2dec::{DecodableFloat, Decoded, FullDecoded, MAX_SIG_DIGITS, decode};
use std::io::Write;

use test::{Bencher, black_box};

pub fn decode_finite<T: DecodableFloat>(v: T) -> Decoded {
    match decode(v).1 {
        FullDecoded::Finite(decoded) => decoded,
        full_decoded => panic!("expected finite, got {full_decoded:?} instead"),
    }
}

#[bench]
fn bench_small_shortest(b: &mut Bencher) {
    let mut buf = Vec::with_capacity(20);

    b.iter(|| {
        buf.clear();
        write!(black_box(&mut buf), "{}", black_box(3.1415926f64)).unwrap()
    });
}

#[bench]
fn bench_big_shortest(b: &mut Bencher) {
    let mut buf = Vec::with_capacity(300);

    b.iter(|| {
        buf.clear();
        write!(black_box(&mut buf), "{}", black_box(f64::MAX)).unwrap()
    });
}