diff --git a/include/endianness.h b/include/endianness.h
new file mode 100644
index 00000000..3b17a8b9
--- /dev/null
+++ b/include/endianness.h
@@ -0,0 +1,85 @@
+#pragma once
+
+#ifdef __cplusplus
+namespace Ship {
+enum class Endianness {
+    Little = 0,
+    Big = 1,
+
+#if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)) || defined(__BIG_ENDIAN__)
+    Native = Big,
+#else
+    Native = Little,
+#endif
+};
+} // namespace Ship
+#endif
+
+#ifdef _MSC_VER
+#include <stdlib.h>
+
+#define BSWAP16 _byteswap_ushort
+#define BSWAP32 _byteswap_ulong
+#define BSWAP64 _byteswap_uint64
+
+#define BOMSWAP16 _byteswap_ushort
+#define BOMSWAP32 _byteswap_ulong
+#define BOMSWAP64 _byteswap_uint64
+
+#define BOMSWAP16_CONST(x) ((((x) >> 8) & 0x00FF) | (((x) << 8) & 0xFF00))
+#define BOMSWAP32_CONST(x) \
+    ((((x) >> 24) & 0x000000FF) | (((x) >> 8) & 0x0000FF00) | (((x) << 8) & 0x00FF0000) | (((x) << 24) & 0xFF000000))
+#define BOMSWAP64_CONST(x)                                                                                          \
+    ((((x) >> 56) & 0x00000000000000FF) | (((x) >> 40) & 0x000000000000FF00) | (((x) >> 24) & 0x0000000000FF0000) | \
+     (((x) >> 8) & 0x00000000FF000000) | (((x) << 8) & 0x000000FF00000000) | (((x) << 24) & 0x0000FF0000000000) |   \
+     (((x) << 40) & 0x00FF000000000000) | (((x) << 56) & 0xFF00000000000000))
+#else
+
+#define BSWAP16 __builtin_bswap16
+#define BSWAP32 __builtin_bswap32
+#define BSWAP64 __builtin_bswap64
+
+#define BOMSWAP16 __builtin_bswap16
+#define BOMSWAP32 __builtin_bswap32
+#define BOMSWAP64 __builtin_bswap64
+
+#define BOMSWAP16_CONST __builtin_bswap16
+#define BOMSWAP32_CONST __builtin_bswap32
+#define BOMSWAP64_CONST __builtin_bswap64
+#endif
+
+#if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)) || defined(__BIG_ENDIAN__)
+#ifndef IS_BIGENDIAN
+#define IS_BIGENDIAN
+#endif
+#endif
+
+#ifdef IS_BIGENDIAN
+#define BE16SWAP(x) (x)
+#define BE32SWAP(x) (x)
+#define BE64SWAP(x) (x)
+#define LE16SWAP(x) BOMSWAP16(x)
+#define LE32SWAP(x) BOMSWAP32(x)
+#define LE64SWAP(x) BOMSWAP64(x)
+
+#define BE16SWAP_CONST(x) (x)
+#define BE32SWAP_CONST(x) (x)
+#define BE64SWAP_CONST(x) (x)
+#define LE16SWAP_CONST(x) BOMSWAP16_CONST(x)
+#define LE32SWAP_CONST(x) BOMSWAP32_CONST(x)
+#define LE64SWAP_CONST(x) BOMSWAP64_CONST(x)
+#else
+#define BE16SWAP(x) BOMSWAP16(x)
+#define BE32SWAP(x) BOMSWAP32(x)
+#define BE64SWAP(x) BOMSWAP64(x)
+#define LE16SWAP(x) (x)
+#define LE32SWAP(x) (x)
+#define LE64SWAP(x) (x)
+
+#define BE16SWAP_CONST(x) BOMSWAP16_CONST(x)
+#define BE32SWAP_CONST(x) BOMSWAP32_CONST(x)
+#define BE64SWAP_CONST(x) BOMSWAP64_CONST(x)
+#define LE16SWAP_CONST(x) (x)
+#define LE32SWAP_CONST(x) (x)
+#define LE64SWAP_CONST(x) (x)
+#endif