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src/backup/chunker.rs: simplify buzzhash start code

This commit is contained in:
Dietmar Maurer 2019-02-19 12:17:17 +01:00
parent 1c7a88aeff
commit 9a3e869cf5
1 changed files with 3 additions and 5 deletions
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8
src/backup/chunker.rs
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@ -220,13 +220,11 @@ impl Chunker {
let window_len = self.window.len();
for i in 0..window_len-1 {
let mut h: u32 = 0;
for i in 0..window_len {
let byte = self.window[i];
self.h ^= BUZHASH_TABLE[(byte as usize)].rotate_left((window_len - (i + 1)) as u32);
h = h.rotate_left(1) ^ BUZHASH_TABLE[byte as usize];
}
let byte = self.window[window_len-1];
self.h ^= BUZHASH_TABLE[(byte as usize)];
}
}