From 8ce63976893cd00b39abf2da7fb560313dcabca7 Mon Sep 17 00:00:00 2001
From: Fabrice <fabrice@schaub-dev.xyz>
Date: Sun, 12 Apr 2026 21:59:29 +0200
Subject: correctness fix

---
 cheesemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cheesemap.c b/cheesemap.c
index ea3126b..9bcbbab 100644
--- a/cheesemap.c
+++ b/cheesemap.c
@@ -55,7 +55,7 @@ CM_ATTR(hot) static inline cm_usize cm_bitmask_clz(bitmask_t mask) {
 #if CM_GROUP_SIZE == 8
   return cm_clz(mask) / CHAR_BIT;
 #elif CM_GROUP_SIZE == 16
-  return cm_clz(mask);
+  return cm_clz(mask) - (CM_WORD_WIDTH - CM_GROUP_SIZE);
 #else
 #error "unknown group size"
 #endif
-- 
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