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添加Rust版本bvid算法示例

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stackinspector
2023-05-16 03:38:27 +08:00
parent f8a8f8a245
commit dc5c527a1f
1 changed files with 5 additions and 2 deletions
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7
docs/other/bvid_desc.md
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@@ -405,7 +405,7 @@ const POW58: [u64; 10] = [
2207984167552, 128063081718016, 7427658739644928, 2207984167552, 128063081718016, 7427658739644928,
]; ];
pub fn av2bv(avid: u64) -> [u8; 10] { fn av2bv(avid: u64) -> [u8; 10] {
let a = (avid ^ XORN) + ADDN; let a = (avid ^ XORN) + ADDN;
let mut bvid = [0; 10]; let mut bvid = [0; 10];
for i in 0..10 { for i in 0..10 {
@@ -414,11 +414,14 @@ pub fn av2bv(avid: u64) -> [u8; 10] {
bvid bvid
} }
pub fn bv2av(bvid: [u8; 10]) -> u64 { fn bv2av(bvid: [u8; 10]) -> u64 {
let mut a = 0; let mut a = 0;
for i in 0..10 { for i in 0..10 {
a += REV_TABLE[bvid[MAP[i]] as usize - 49] as u64 * POW58[i]; a += REV_TABLE[bvid[MAP[i]] as usize - 49] as u64 * POW58[i];
} }
(a - ADDN) ^ XORN (a - ADDN) ^ XORN
} }
// assert_eq!(*b"17x411w7KC", av2bv(170001));
// assert_eq!(170001, bv2av(*b"17x411w7KC"));
``` ```