From 260ed0fd5c38ec09f815e8da74bcab78a97380c7 Mon Sep 17 00:00:00 2001
From: Quaternions <krakow20@gmail.com>
Date: Fri, 13 Sep 2024 14:00:13 -0700
Subject: [PATCH] ratio: PartialEq, Eq, PartialOrd, Ord
---
ratio_ops/src/ratio.rs | 45 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/ratio_ops/src/ratio.rs b/ratio_ops/src/ratio.rs
index fdb5f39eb..a7f8928d6 100644
--- a/ratio_ops/src/ratio.rs
+++ b/ratio_ops/src/ratio.rs
@@ -175,3 +175,48 @@ macro_rules! impl_ratio_assign_operator {
impl_ratio_assign_operator!(AddAssign,add_assign);
impl_ratio_assign_operator!(SubAssign,sub_assign);
impl_ratio_assign_operator!(RemAssign,rem_assign);
+
+// Only implement PartialEq<Self>
+// Rust's operators aren't actually that good
+
+impl<Num,Den,T> PartialEq for Ratio<Num,Den>
+ where
+ Num:Copy,
+ Den:Copy,
+ Num:core::ops::Mul<Den,Output=T>,
+ T:PartialEq,
+{
+ #[inline]
+ fn eq(&self,&other:&Self)->bool{
+ (self.num*other.den).eq(&(other.num*self.den))
+ }
+}
+impl<Num,Den> Eq for Ratio<Num,Den>
+ where
+ Ratio<Num,Den>:PartialEq,
+{}
+
+impl<Num,Den,T> PartialOrd for Ratio<Num,Den>
+ where
+ Num:Copy,
+ Den:Copy,
+ Num:core::ops::Mul<Den,Output=T>,
+ T:PartialOrd,
+{
+ #[inline]
+ fn partial_cmp(&self,&other:&Self)->Option<core::cmp::Ordering>{
+ (self.num*other.den).partial_cmp(&(other.num*self.den))
+ }
+}
+impl<Num,Den,T> Ord for Ratio<Num,Den>
+ where
+ Num:Copy,
+ Den:Copy,
+ Num:core::ops::Mul<Den,Output=T>,
+ T:Ord,
+{
+ #[inline]
+ fn cmp(&self,other:&Self)->std::cmp::Ordering{
+ (self.num*other.den).cmp(&(other.num*self.den))
+ }
+}