Add beginnings of hopeful endian-independence

client/proxendian.h

@@ -0,0 +1,46 @@
+//-----------------------------------------------------------------------------
+// Copyright (C) 2010 Hector Martin "marcan" <marcan@marcansoft.com>
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Endianness convenience functions
+//-----------------------------------------------------------------------------
+
+#ifndef PROXENDIAN_H__
+#define PROXENDIAN_H__
+
+#include <stdint.h>
+
+#ifdef WIN32
+# define HOST_LITTLE_ENDIAN
+#else
+# include <sys/types.h>
+
+# if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
+#  error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
+# endif
+
+# if BYTE_ORDER == LITTLE_ENDIAN
+#  define HOST_LITTLE_ENDIAN
+# endif
+#endif
+
+#ifdef HOST_LITTLE_ENDIAN
+# define le16(x) (x)
+# define le32(x) (x)
+#else
+
+static inline uint16_t le16(uint16_t v)
+{
+	return (v>>8) | (v<<8);
+}
+
+static inline uint32_t le32(uint32_t v)
+{
+	return (le16(v)<<16) | (le16(v>>16));
+}
+#endif // HOST_LITTLE_ENDIAN
+
+#endif // PROXENDIAN_H__