From: Joshua Simmons <josh@nega.tv>
Date: Sun, 9 Jul 2023 17:50:09 +0000 (+0200)
Subject: narcissus-core: Improve align_offset
X-Git-Url: https://git.nega.tv//gitweb.cgi?a=commitdiff_plain;h=1f465e96d33a2721da3c7d69d58fa3071d04c0a7;p=josh%2Fnarcissus

narcissus-core: Improve align_offset
---

diff --git a/libs/narcissus-core/src/lib.rs b/libs/narcissus-core/src/lib.rs
index d001603..ebe0443 100644
--- a/libs/narcissus-core/src/lib.rs
+++ b/libs/narcissus-core/src/lib.rs
@@ -293,7 +293,8 @@ pub trait Upcast<T: ?Sized> {
 #[must_use]
 pub fn align_offset(x: usize, align: usize) -> usize {
     debug_assert!(align.is_power_of_two());
-    (x + align - 1) & !(align - 1)
+    let align_mask = align - 1;
+    (x + align_mask) & !align_mask
 }
 
 #[must_use]