From 6690572bf3d674618c4907ac7bbc52ab949902dc Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Wed, 8 Feb 2023 17:12:34 +0000
Subject: [PATCH] kernel: add utility math functions

---
 include/socks/util.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/socks/util.h b/include/socks/util.h
index 8205781..3fd1ff5 100644
--- a/include/socks/util.h
+++ b/include/socks/util.h
@@ -6,5 +6,14 @@
 
 extern void data_size_to_string(size_t value, char *out, size_t outsz);
 static inline bool power_of_2(size_t x) { return (x > 0 && (x & (x - 1)) == 0); }
+static inline unsigned long long div64_pow2(unsigned long long x, unsigned long long y)
+{
+	return x >> (__builtin_ctz(y));
+}
+
+static inline unsigned long long absdiff64(unsigned long long x, unsigned long long y)
+{
+	return x > y ? y - x : x - y;
+}
 
 #endif