From 71a14f0fc23712e5f742f4022959dcd43d95d9a6 Mon Sep 17 00:00:00 2001
From: weidai <weidai@57ff6487-cd31-0410-9ec3-f628ee90f5f0>
Date: Tue, 25 Sep 2007 06:22:24 +0000
Subject: don't use _rotl64 with ICC

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@408 57ff6487-cd31-0410-9ec3-f628ee90f5f0
---
 misc.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'misc.h')

diff --git a/misc.h b/misc.h
index 089308c..132db7c 100644
--- a/misc.h
+++ b/misc.h
@@ -485,7 +485,10 @@ template<> inline word32 rotrMod<word32>(word32 x, unsigned int y)
 	return _lrotr(x, y);
 }
 
-#if _MSC_VER >= 1300
+#endif // #ifdef _MSC_VER
+
+#if _MSC_VER >= 1300 && !defined(__INTEL_COMPILER)
+// Intel C++ Compiler 10.0 calls a function instead of using the rotate instruction when using these instructions
 
 template<> inline word64 rotlFixed<word64>(word64 x, unsigned int y)
 {
@@ -524,6 +527,7 @@ template<> inline word64 rotrMod<word64>(word64 x, unsigned int y)
 #endif // #if _MSC_VER >= 1310
 
 #if _MSC_VER >= 1400 && !defined(__INTEL_COMPILER)
+// Intel C++ Compiler 10.0 gives undefined externals with these
 
 template<> inline word16 rotlFixed<word16>(word16 x, unsigned int y)
 {
@@ -595,8 +599,6 @@ template<> inline byte rotrMod<byte>(byte x, unsigned int y)
 
 #endif // #if _MSC_VER >= 1400
 
-#endif // #ifdef _MSC_VER
-
 #if (defined(__MWERKS__) && TARGET_CPU_PPC)
 
 template<> inline word32 rotlFixed<word32>(word32 x, unsigned int y)
-- 
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