linux-x86/1.55.0/src/stdlibs/library/core/benches/num/flt2dec/strategy/grisu.rs

use super::super::*;
use core::num::flt2dec::strategy::grisu::*;
use std::mem::MaybeUninit;
use test::Bencher;

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

#[bench]
fn bench_small_shortest(b: &mut Bencher) {
    let decoded = decode_finite(3.141592f64);
    let mut buf = [MaybeUninit::new(0); MAX_SIG_DIGITS];
    b.iter(|| {
        format_shortest(&decoded, &mut buf);
    });
}

#[bench]
fn bench_big_shortest(b: &mut Bencher) {
    let decoded = decode_finite(f64::MAX);
    let mut buf = [MaybeUninit::new(0); MAX_SIG_DIGITS];
    b.iter(|| {
        format_shortest(&decoded, &mut buf);
    });
}

#[bench]
fn bench_small_exact_3(b: &mut Bencher) {
    let decoded = decode_finite(3.141592f64);
    let mut buf = [MaybeUninit::new(0); 3];
    b.iter(|| {
        format_exact(&decoded, &mut buf, i16::MIN);
    });
}

#[bench]
fn bench_big_exact_3(b: &mut Bencher) {
    let decoded = decode_finite(f64::MAX);
    let mut buf = [MaybeUninit::new(0); 3];
    b.iter(|| {
        format_exact(&decoded, &mut buf, i16::MIN);
    });
}

#[bench]
fn bench_small_exact_12(b: &mut Bencher) {
    let decoded = decode_finite(3.141592f64);
    let mut buf = [MaybeUninit::new(0); 12];
    b.iter(|| {
        format_exact(&decoded, &mut buf, i16::MIN);
    });
}

#[bench]
fn bench_big_exact_12(b: &mut Bencher) {
    let decoded = decode_finite(f64::MAX);
    let mut buf = [MaybeUninit::new(0); 12];
    b.iter(|| {
        format_exact(&decoded, &mut buf, i16::MIN);
    });
}

#[bench]
fn bench_small_exact_inf(b: &mut Bencher) {
    let decoded = decode_finite(3.141592f64);
    let mut buf = [MaybeUninit::new(0); 1024];
    b.iter(|| {
        format_exact(&decoded, &mut buf, i16::MIN);
    });
}

#[bench]
fn bench_big_exact_inf(b: &mut Bencher) {
    let decoded = decode_finite(f64::MAX);
    let mut buf = [MaybeUninit::new(0); 1024];
    b.iter(|| {
        format_exact(&decoded, &mut buf, i16::MIN);
    });
}