From d8dfd7a9703937e9574a4529927b0d7dd2ca39b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=BCrg=C3=BCn=20Day=C4=B1o=C4=9Flu?= <hey@gurgun.day>
Date: Sun, 2 Mar 2025 01:29:17 +0100
Subject: [PATCH] buffer: optimize read UInt16/24 functions with bitwise
 operations

---
 lib/internal/buffer.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/internal/buffer.js b/lib/internal/buffer.js
index dc21fb3e334588..7dec60f551fbdf 100644
--- a/lib/internal/buffer.js
+++ b/lib/internal/buffer.js
@@ -234,7 +234,7 @@ function readUInt24LE(buf, offset = 0) {
   if (first === undefined || last === undefined)
     boundsError(offset, buf.length - 3);
 
-  return first + buf[++offset] * 2 ** 8 + last * 2 ** 16;
+  return first | (buf[++offset] << 8) | (last << 16);
 }
 
 function readUInt16LE(offset = 0) {
@@ -244,7 +244,7 @@ function readUInt16LE(offset = 0) {
   if (first === undefined || last === undefined)
     boundsError(offset, this.length - 2);
 
-  return first + last * 2 ** 8;
+  return first | (last << 8);
 }
 
 function readUInt8(offset = 0) {
@@ -323,7 +323,7 @@ function readUInt24BE(buf, offset = 0) {
   if (first === undefined || last === undefined)
     boundsError(offset, buf.length - 3);
 
-  return first * 2 ** 16 + buf[++offset] * 2 ** 8 + last;
+  return (first << 16) | (buf[++offset] << 8) | last;
 }
 
 function readUInt16BE(offset = 0) {
@@ -333,7 +333,7 @@ function readUInt16BE(offset = 0) {
   if (first === undefined || last === undefined)
     boundsError(offset, this.length - 2);
 
-  return first * 2 ** 8 + last;
+  return (first << 8) | last;
 }
 
 function readIntLE(offset, byteLength) {