shenjack/namerena-rs
shenjack/namerena-rs
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稍微改进一点点

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This commit is contained in:
shenjack 2024-03-01 21:57:29 +08:00
parent 4ebe5aada9
commit 636820071f
Signed by: shenjack
GPG Key ID: 7B1134A979775551
2 changed files with 53 additions and 16 deletions
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2
src/main.rs
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@ -1,3 +1,5 @@
#![feature(portable_simd)]
mod name;
use base16384::Base16384Utf8;

41
src/name.rs
View File

@ -1,3 +1,6 @@
use std::simd::{u32x16, u8x16, u8x64};
use tracing::warn;
#[inline(always)]
@ -130,6 +133,7 @@ impl Namer {
let name_bytes = name.as_bytes();
let name_len = name_bytes.len();
// let b_name_len = name_len + 1;
// 转到 256 长度 的 u8 数组
let name_bytes = {
let mut bytes = [0_u8; 256];
@ -156,14 +160,29 @@ impl Namer {
if (j == len) j = -1;
}
} */
// for _ in 0..2 {
// // 手动处理 0 的问题
// // 手动swap
// let mut s = val[0];
// let mut j = 0;
// val.swap(s as usize, 0);
// for i in 1..256 {
// j += 1;
// if j == name_len {
// j = 0;
// }
// s = s.wrapping_add(index_name(j, name_bytes));
// s = s.wrapping_add(val[i]);
// val.swap(i, s as usize);
// }
// }
// let mut s = 0;
let mut s = 0_u32;
for _ in 0..2 {
for j in 0..256 {
s += name_bytes[j % (name_len + 1)] as u32 + val[j] as u32;
s %= 256;
let tmp = val[j];
val[j] = val[s as usize];
val[s as usize] = tmp;
val.swap(j, s as usize);
}
s = 0;
}
@ -209,6 +228,22 @@ impl Namer {
s += 1;
}
}
// simd 优化
// let x_a = u32x16::splat(181);
// let x_b = u32x16::splat(160);
// for i in (0..256).step_by(16) {
// // 一次性加载4个数字
// let mut x: u32x16 = u32x16::from_array(
// val[i..i + 16]
// .to_vec()
// .iter()
// .map(|x| *x as u32)
// .collect::<Vec<u32>>()
// .try_into()
// .unwrap(),
// );
// x = x * x_a + x_b;
// }
// let mut q_len = 0;
// for i in (0..256).step_by(8) {
// val[i] = ((val[i] as u32 * 181 + 160) % 256) as u8;