From 8d61e632746395fe892f1d7ad2f02428f6d8726e Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Sun, 16 Jan 2022 20:50:49 -0500
Subject: [PATCH] add comment about special small size classes

---
 h_malloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/h_malloc.c b/h_malloc.c
index 13bf763..fd5e766 100644
--- a/h_malloc.c
+++ b/h_malloc.c
@@ -193,6 +193,7 @@ static inline struct size_info get_size_info(size_t size) {
     if (size == 0) {
         return (struct size_info){0, 0};
     }
+    // size <= 64 is needed for correctness and raising it to size <= 128 is an optimization
     if (size <= 128) {
         return (struct size_info){align(size, 16), ((size - 1) >> 4) + 1};
     }