ratio: PartialEq, Eq, PartialOrd, Ord

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))
+	}
+}