From 03bdd346f59d460137c26f2f17dcecb37bd500d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Mon, 22 Mar 2010 22:12:27 +0100
Subject: [PATCH] (READ_UINT64, WRITE_UINT64): New macros.
Rev: nettle/macros.h:1.2
---
macros.h | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/macros.h b/macros.h
index 52876976..2cc69cbb 100644
--- a/macros.h
+++ b/macros.h
@@ -4,7 +4,7 @@
/* nettle, low-level cryptographics library
*
- * Copyright (C) 2001 Niels M�ller
+ * Copyright (C) 2001, 2010 Niels M�ller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
@@ -25,6 +25,29 @@
#ifndef NETTLE_MACROS_H_INCLUDED
#define NETTLE_MACROS_H_INCLUDED
+/* Reads a 64-bit integer, in network, big-endian, byte order */
+#define READ_UINT64(p) \
+( (((uint64_t) (p)[0]) << 56) \
+ | (((uint64_t) (p)[1]) << 48) \
+ | (((uint64_t) (p)[2]) << 40) \
+ | (((uint64_t) (p)[3]) << 32) \
+ | (((uint64_t) (p)[4]) << 24) \
+ | (((uint64_t) (p)[5]) << 16) \
+ | (((uint64_t) (p)[6]) << 8) \
+ | ((uint64_t) (p)[7]))
+
+#define WRITE_UINT64(p, i) \
+do { \
+ (p)[0] = ((i) >> 56) & 0xff; \
+ (p)[1] = ((i) >> 48) & 0xff; \
+ (p)[2] = ((i) >> 40) & 0xff; \
+ (p)[3] = ((i) >> 32) & 0xff; \
+ (p)[4] = ((i) >> 24) & 0xff; \
+ (p)[5] = ((i) >> 16) & 0xff; \
+ (p)[6] = ((i) >> 8) & 0xff; \
+ (p)[7] = (i) & 0xff; \
+} while(0)
+
/* Reads a 32-bit integer, in network, big-endian, byte order */
#define READ_UINT32(p) \
( (((uint32_t) (p)[0]) << 24) \
--
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