From ddf9f28b7fcb36da063e26102f7f97190e4158c8 Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Mon, 7 Jun 2010 10:29:12 +0200
Subject: [PATCH] add byteorder macros

---
 usbtmc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/usbtmc.c b/usbtmc.c
index 32f83a8..835b6c8 100644
--- a/usbtmc.c
+++ b/usbtmc.c
@@ -8,6 +8,14 @@
 
 #define USB_TIMEOUT 50000
 
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define LE32(x) x
+#elif BYTE_ORDER == BIG_ENDIAN
+#define LE32(x) ((uint32_t)((((uint32_t)x)>>24) | ((((uint32_t)x)>>8) & 0xff00) | ((((uint32_t)x)<<8) & 0xff0000) | (((uint32_t)x)<<24)))
+#else
+#error BYTE_ORDER not defined/known!
+#endif
+
 //Helper-routine: Convert a little-endian 4-byte word to an int
 static void int2chars(unsigned char *buff,unsigned int a) {
 	buff[3]=(a>>24)&0xff;
-- 
2.39.2