From 4d000a33ebd50fcde79162444a6a4c69efdf82e1 Mon Sep 17 00:00:00 2001
From: Mike Brady <4265913+mikebrady@users.noreply.github.com>
Date: Thu, 14 Jul 2022 10:10:19 +0100
Subject: [PATCH] Add a net-to-host converter for 64-bit arithmetic

---
 general-utilities.c | 13 +++++++++++++
 general-utilities.h |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/general-utilities.c b/general-utilities.c
index b758c77..a92a71d 100644
--- a/general-utilities.c
+++ b/general-utilities.c
@@ -57,6 +57,19 @@ uint16_t nctohs(const uint8_t *p) { // read 2 characters from *p and do ntohs on
   return ntohs(holder);
 }
 
+uint64_t ntoh64(const uint64_t n) {
+  uint64_t fiddle = n;
+  uint32_t fiddle_hi = fiddle & 0xFFFFFFFF;
+  fiddle_hi = ntohl(fiddle_hi);
+  fiddle = fiddle >> 32;
+  uint32_t fiddle_lo = fiddle & 0xFFFFFFFF;
+  fiddle_lo = ntohl(fiddle_lo);
+  fiddle = fiddle_hi;
+  fiddle = fiddle << 32;
+  fiddle = fiddle | fiddle_lo;
+  return fiddle;
+}
+
 uint64_t timespec_to_ns(struct timespec *tn) {
   uint64_t tnfpsec = tn->tv_sec;
   uint64_t tnfpnsec = tn->tv_nsec;
diff --git a/general-utilities.h b/general-utilities.h
index 3dbeb89..527b1ab 100644
--- a/general-utilities.h
+++ b/general-utilities.h
@@ -45,4 +45,6 @@ uint16_t nctohs(const uint8_t *p);
 uint64_t timespec_to_ns(struct timespec *tn);
 uint64_t get_time_now();
 
+uint64_t ntoh64(const uint64_t n);
+
 #endif
\ No newline at end of file
-- 
2.47.2