rusty-numbers/src/bigint.rs

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2020-02-12 22:29:57 -05:00
//! Arbitrarily large integers
use crate::Unsigned;
#[derive(Debug)]
enum BigIntSign {
Positive,
Negative
}
#[derive(Debug)]
pub struct BigInt {
inner: Vec<usize>,
sign: BigIntSign,
}
impl Default for BigInt {
fn default() -> Self {
Self {
inner: vec![],
sign: BigIntSign::Positive,
}
}
}
impl From<T: Unsigned> for BigInt {
fn from(n: T) -> Self {
let mut new = Self::default();
if n > usize::max_value() {
new.inner = Self.split(n);
}
new
}
}
impl<T: Unsigned> BigInt {
/// Split an unsigned number into BigInt parts
fn split(num: T) -> Vec<usize> {
// Pretty easy if you don't actually need to split the value!
if num < usize::max_value() {
return vec![T::into()];
}
todo!();
}
}
impl BigInt {
pub fn new() -> Self {
Self::default()
}
}
#[cfg(test)]
mod tests {
}