generated from PlexSheep/baserepo
29 lines
686 B
Rust
29 lines
686 B
Rust
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//! # Split numbers into bits and bytes
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//!
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//! Sometimes, you need a large integer in the form of many bytes, so split into [u8].
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//! Rust provides
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use num_traits::Unsigned;
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/// split an integer into it's bytes, ignoring those bytes that would be all zero.
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///
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/// If the integer is zero, the Vec contains a single null byte.
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pub fn unsigned_to_vec<T>(mut num: T) -> Vec<u8>
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where
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T: Unsigned,
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T: std::ops::ShrAssign<i32>,
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T: std::cmp::PartialOrd<i32>,
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u8: std::convert::From<T>,
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T: Copy,
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{
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if num == 0 {
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return vec![0];
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}
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let mut buf: Vec<u8> = Vec::new();
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while num > 0 {
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buf.push(num.into());
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num >>= 8;
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}
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buf
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}
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