From a29e8cb6bd3976a117726961459446637919558a Mon Sep 17 00:00:00 2001
From: josh <josh@redacted.cc>
Date: Mon, 9 Jun 2025 15:35:03 -0500
Subject: [PATCH] Add ReverseByteOrder(buffer)

---
 include/Endianness.hpp | 18 ++++++++++++++++++
 main.cpp               | 17 +++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/include/Endianness.hpp b/include/Endianness.hpp
index fc3370a..9047736 100644
--- a/include/Endianness.hpp
+++ b/include/Endianness.hpp
@@ -48,6 +48,24 @@ namespace Endianness
 		return retVal;
 	}
 
+
+	template <typename T>
+	void ReverseByteOrder(T* buffer, size_t length)
+	{
+		// Compile-time check to ensure T is an integral type and not bool
+		// (single-byte types like char, int8_t don't need byte reversal)
+		static_assert(std::is_integral_v<T>, "ReverseByteOrder (buffer): Type T must be an integral type.");
+		static_assert(sizeof(T) > 1, "ReverseByteOrder (buffer): Type T must be larger than 1 byte for byte reversal.");
+
+		if (!buffer || length == 0) {
+			return; // Nothing to do
+		}
+
+		for (size_t i = 0; i < length; ++i) {
+			buffer[i] = ReverseByteOrder(buffer[i]); // Call the single-value function
+		}
+	}
+
 #pragma region Template Specializations
 	/// This function simply returns the input value, as no byte order can be swapped on a single-byte-length value.
 	template <>  u8 ReverseByteOrder<u8>(u8 val);
diff --git a/main.cpp b/main.cpp
index 8585328..26cf3dc 100644
--- a/main.cpp
+++ b/main.cpp
@@ -64,6 +64,21 @@ void TestReverseByteOrderIfLittleEndian(const std::string& type_name, T original
     std::cout << std::endl;
 }
 
+
+void TestBuffer()
+{
+    int data[500];
+
+    for (int i = 0; i < 500; i++)
+    {
+        data[i] = i*5;
+    }
+
+    Endianness::ReverseByteOrder(data, 500);
+
+    Endianness::ReverseByteOrder(data, 500);
+}
+
 int main()
 {
 	for (int i = 0; i < 256; i++)
@@ -75,6 +90,8 @@ int main()
 	    TestRoundTrip<float>("float", i / 3.14159f);
 	}
 
+    TestBuffer();
+
 	return 0;
 
 }
\ No newline at end of file