use std::{
cmp::Ordering,
hash::{Hash, Hasher},
ops::Neg,
};
#[derive(Debug, Default, Copy, Clone, PartialOrd)]
pub struct Real(pub f64);
#[allow(clippy::derive_ord_xor_partial_ord)]
impl Ord for Real {
fn cmp(&self, other: &Self) -> Ordering {
self.0.partial_cmp(&other.0).unwrap_or_else(|| {
if self.0.is_nan() && !other.0.is_nan() {
Ordering::Less
} else if !self.0.is_nan() && other.0.is_nan() {
Ordering::Greater
} else {
Ordering::Equal
}
})
}
}
impl PartialEq for Real {
fn eq(&self, other: &Self) -> bool {
if self.0.is_nan() && other.0.is_nan() {
true
} else {
self.0 == other.0
}
}
}
impl Eq for Real {}
impl Hash for Real {
fn hash<H: Hasher>(&self, state: &mut H) {
state.write(&self.0.to_le_bytes());
}
}
impl Neg for Real {
type Output = Real;
fn neg(self) -> Self::Output {
Real(-self.0)
}
}