From 22d357c53c1816e8bb0995a0fd13a5b44730be8b Mon Sep 17 00:00:00 2001
From: junderw <jonathan.underwood4649@gmail.com>
Date: Wed, 5 Jul 2023 08:39:01 -0700
Subject: [PATCH] Faster txid to u32 parsing

---
 backend/src/__tests__/gbt/gbt-tests.ts | 12 ++++++------
 backend/src/api/transaction-utils.ts   | 12 ++++++------
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/backend/src/__tests__/gbt/gbt-tests.ts b/backend/src/__tests__/gbt/gbt-tests.ts
index 8af76a47c..0651faac4 100644
--- a/backend/src/__tests__/gbt/gbt-tests.ts
+++ b/backend/src/__tests__/gbt/gbt-tests.ts
@@ -58,11 +58,11 @@ function mempoolFromArrayBuffer(buf: ArrayBuffer): { mempool: ThreadTransaction[
 }
 
 function txidToOrdering(txid: string): number {
-  return (
-    ((parseInt(txid.substring(62, 64), 16) << 24) |
-      (parseInt(txid.substring(60, 62), 16) << 16) |
-      (parseInt(txid.substring(58, 60), 16) << 8) |
-      parseInt(txid.substring(56, 58), 16)) >>>
-    0
+  return parseInt(
+    txid.substr(62, 2) +
+      txid.substr(60, 2) +
+      txid.substr(58, 2) +
+      txid.substr(56, 2),
+    16
   );
 }
diff --git a/backend/src/api/transaction-utils.ts b/backend/src/api/transaction-utils.ts
index 92f5b71c5..8bebc42d8 100644
--- a/backend/src/api/transaction-utils.ts
+++ b/backend/src/api/transaction-utils.ts
@@ -158,12 +158,12 @@ class TransactionUtils {
 
   // returns the most significant 4 bytes of the txid as an integer
   public txidToOrdering(txid: string): number {
-    return (
-      ((parseInt(txid.substring(62, 64), 16) << 24) |
-        (parseInt(txid.substring(60, 62), 16) << 16) |
-        (parseInt(txid.substring(58, 60), 16) << 8) |
-        parseInt(txid.substring(56, 58), 16)) >>>
-      0
+    return parseInt(
+      txid.substr(62, 2) +
+        txid.substr(60, 2) +
+        txid.substr(58, 2) +
+        txid.substr(56, 2),
+      16
     );
   }
 }