From a574dcb2aed065e48c60565697dff77595e0e9b2 Mon Sep 17 00:00:00 2001
From: MerryMage <MerryMage@users.noreply.github.com>
Date: Mon, 23 Jul 2018 15:56:40 +0100
Subject: [PATCH] u128: Add comparison operators

---
 src/common/u128.h | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/common/u128.h b/src/common/u128.h
index b08143c8..401c608f 100644
--- a/src/common/u128.h
+++ b/src/common/u128.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <cstring>
+#include <tuple>
 #include <type_traits>
 
 #include "common/bit_util.h"
@@ -51,6 +52,30 @@ inline u128 operator-(u128 a, u128 b) {
     return result;
 }
 
+inline bool operator<(u128 a, u128 b) {
+    return std::tie(a.upper, a.lower) < std::tie(b.upper, b.lower);
+}
+
+inline bool operator>(u128 a, u128 b) {
+    return std::tie(a.upper, a.lower) > std::tie(b.upper, b.lower);
+}
+
+inline bool operator<=(u128 a, u128 b) {
+    return std::tie(a.upper, a.lower) <= std::tie(b.upper, b.lower);
+}
+
+inline bool operator>=(u128 a, u128 b) {
+    return std::tie(a.upper, a.lower) >= std::tie(b.upper, b.lower);
+}
+
+inline bool operator==(u128 a, u128 b) {
+    return std::tie(a.upper, a.lower) == std::tie(b.upper, b.lower);
+}
+
+inline bool operator!=(u128 a, u128 b) {
+    return std::tie(a.upper, a.lower) != std::tie(b.upper, b.lower);
+}
+
 u128 operator<<(u128 operand, int amount);
 u128 operator>>(u128 operand, int amount);