feat: split unsigned numbers into bytes #76
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This commit is contained in:
Christoph J. Scherr 2024-05-12 02:24:23 +02:00
parent c918fbf196
commit 0eb6490854
2 changed files with 29 additions and 0 deletions

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@ -25,3 +25,4 @@ pub const YOBI: u128 = 2u128.pow(80);
// use libpt_core;
pub mod datalayout;
pub mod display;
pub mod split_numbers;

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@ -0,0 +1,28 @@
//! # Split numbers into bits and bytes
//!
//! Sometimes, you need a large integer in the form of many bytes, so split into [u8].
//! Rust provides
use num_traits::Unsigned;
/// split an integer into it's bytes, ignoring those bytes that would be all zero.
///
/// If the integer is zero, the Vec contains a single null byte.
pub fn unsigned_to_vec<T>(mut num: T) -> Vec<u8>
where
T: Unsigned,
T: std::ops::ShrAssign<i32>,
T: std::cmp::PartialOrd<i32>,
u8: std::convert::From<T>,
T: Copy,
{
if num == 0 {
return vec![0];
}
let mut buf: Vec<u8> = Vec::new();
while num > 0 {
buf.push(num.into());
num >>= 8;
}
buf
}