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use crate::{LBNum};
use core::cmp::{self, Ordering};
mod add; mod sub; mod mul; mod div; mod from; mod tryinto; mod fmt;
#[allow(unused_imports)]
pub(crate) use {add::*, sub::*, mul::*, div::*, from::*, tryinto::*, fmt::*};
impl cmp::PartialEq for LBNum {
#[inline(always)]
fn eq(&self, rhs: &Self) -> bool {
self.cmp(rhs) == Ordering::Equal
}
}
impl cmp::Eq for LBNum {}
impl cmp::PartialOrd for LBNum {
#[inline(always)]
fn partial_cmp(&self, rhs: &Self) -> Option<Ordering> {
Some(self.cmp(rhs))
}
}
impl cmp::Ord for LBNum {
#[inline]
fn cmp(&self, rhs: &Self) -> Ordering {
match self.0.len().cmp(&rhs.0.len()) {
Ordering::Greater => Ordering::Greater,
Ordering::Less => Ordering::Less,
Ordering::Equal => {
for (this, other) in self.iter_be().zip(rhs.iter_be()) {
match this.cmp(&other) {
Ordering::Greater => {return Ordering::Greater},
Ordering::Less => {return Ordering::Less},
Ordering::Equal => {}
}
}
Ordering::Equal
}
}
}
}
macro_rules! impl_partial_eq_ord_to_primitive {
($ty:ident) => {
impl PartialEq<$ty> for LBNum {
#[inline(always)]
fn eq(&self, rhs: &$ty) -> bool {
self == &Self::from(*rhs)
}
}
impl PartialEq<LBNum> for $ty {
#[inline(always)]
fn eq(&self, rhs: &LBNum) -> bool {
&LBNum::from(*self) == rhs
}
}
impl PartialOrd<$ty> for LBNum {
#[inline(always)]
fn partial_cmp(&self, rhs: &$ty) -> Option<Ordering> {
Some(self.cmp(&Self::from(*rhs)))
}
}
impl PartialOrd<LBNum> for $ty {
#[inline(always)]
fn partial_cmp(&self, rhs: &LBNum) -> Option<Ordering> {
Some(LBNum::from(*self).cmp(rhs))
}
}
};
}
impl_partial_eq_ord_to_primitive!(u8 );
impl_partial_eq_ord_to_primitive!(u16 );
impl_partial_eq_ord_to_primitive!(u32 );
impl_partial_eq_ord_to_primitive!(u64 );
impl_partial_eq_ord_to_primitive!(u128 );
impl_partial_eq_ord_to_primitive!(usize);
impl LBNum {
#[inline]
#[must_use = "this is an expensive non-in-place operation"]
pub fn logb(mut self, base: LBNum) -> Self {
let mut result = Self::ZERO;
let divide_by = base.clone();
let base_m1 = base - 1u8;
while self > base_m1 {
self /= ÷_by;
result.increment();
}
result
}
}