From 9bd198f5efa116441da68035c7b54c55c49f68e1 Mon Sep 17 00:00:00 2001
From: Davide Galassi <davxy@datawok.net>
Date: Tue, 9 Jul 2024 17:47:53 +0200
Subject: [PATCH] Constant log2 (#49)

---
 src/lib.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 870ed57..322d5f0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -75,7 +75,8 @@ pub use num_traits::{One, Zero};
 /// assert_eq!(log2(1 << 15), 15);
 /// assert_eq!(log2(2usize.pow(18)), 18);
 /// ```
-pub fn log2(x: usize) -> u32 {
+#[inline(always)]
+pub const fn log2(x: usize) -> u32 {
     if x == 0 {
         0
     } else if x.is_power_of_two() {