diff -r -u OpenJPEG_v1_3-original\libopenjpeg\opj_includes.h OpenJPEG_v1_3\libopenjpeg\opj_includes.h
--- OpenJPEG_v1_3-original\libopenjpeg\opj_includes.h	Tue Nov 13 19:35:12 2007
+++ OpenJPEG_v1_3\libopenjpeg\opj_includes.h	Fri May 16 11:38:13 2008
@@ -88,17 +88,24 @@
 
 /* MSVC does not have lrintf */
 #ifdef _MSC_VER
-static INLINE long lrintf(float f){
-	int i;
+	#ifdef _M_X64
+		#include <emmintrin.h>
+		static INLINE long lrintf(float f) {
+			return _mm_cvtss_si32(_mm_load_ss(&f));
+		}
+		#else 
+		static INLINE long lrintf(float f){
+			int i;
 
-	_asm{
-		fld f
-		fistp i
-	};
+			_asm{
+				fld f
+				fistp i
+			};
 
-	return i;
-}
-#endif
+			return i;
+		}
+	#endif // _M_X64
+#endif // _MSC_VER
 
 #include "j2k_lib.h"
 #include "opj_malloc.h"