diff --git a/glm/core/_detail.hpp b/glm/core/_detail.hpp
index b902dc44..5ba760eb 100644
--- a/glm/core/_detail.hpp
+++ b/glm/core/_detail.hpp
@@ -250,16 +250,16 @@ namespace detail{
 		};
 	};
 
-#define GLM_DETAIL_IS_VECTOR(T)	\
-	template <>					\
-	struct is_vector			\
-	{							\
-		enum is_vector_enum		\
-		{						\
-			_YES = 1,			\
-			_NO = 0				\
-		};						\
-	}
+#	define GLM_DETAIL_IS_VECTOR(TYPE) \
+		template <typename T> \
+		struct is_vector<TYPE<T> > \
+		{ \
+			enum is_vector_enum \
+			{ \
+				_YES = 1, \
+				_NO = 0 \
+			}; \
+		};
 
 	//////////////////
 	// matrix
diff --git a/glm/core/func_vector_relational.hpp b/glm/core/func_vector_relational.hpp
index f9431c9a..6cecf195 100644
--- a/glm/core/func_vector_relational.hpp
+++ b/glm/core/func_vector_relational.hpp
@@ -10,6 +10,8 @@
 #ifndef glm_core_func_vector_relational
 #define glm_core_func_vector_relational
 
+#include "_detail.hpp"
+
 namespace glm
 {
 	namespace test{
@@ -31,10 +33,11 @@ namespace glm
 			vecType<T> const & y
 		)
 		{
-			GLM_STATIC_ASSERT(
+			GLM_STATIC_ASSERT((
 				detail::type<T>::is_float || 
 				detail::type<T>::is_int || 
-				detail::type<T>::is_uint, "'lessThan' only accept numbers");
+				detail::type<T>::is_uint) && detail::is_vector<vecType<T> >::_YES, 
+				"'lessThan' only accept numbers");
 
 			typename vecType<bool>::bool_type Result(vecType<bool>::null);
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -51,10 +54,11 @@ namespace glm
 			vecType<T> const & y
 		)
 		{
-			GLM_STATIC_ASSERT(
+			GLM_STATIC_ASSERT((
 				detail::type<T>::is_float || 
 				detail::type<T>::is_int || 
-				detail::type<T>::is_uint, "'lessThanEqual' only accept numbers");
+				detail::type<T>::is_uint) && detail::is_vector<vecType<T> >::_YES, 
+				"'lessThanEqual' only accept numbers");
 
 			typename vecType<bool>::bool_type Result(vecType<bool>::null);
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -71,10 +75,11 @@ namespace glm
 			vecType<T> const & y
 		)
 		{
-			GLM_STATIC_ASSERT(
+			GLM_STATIC_ASSERT((
 				detail::type<T>::is_float || 
 				detail::type<T>::is_int || 
-				detail::type<T>::is_uint, "'greaterThan' only accept numbers");
+				detail::type<T>::is_uint) && detail::is_vector<vecType<T> >::_YES, 
+				"'greaterThan' only accept numbers");
 
 			typename vecType<bool>::bool_type Result(vecType<bool>::null);
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -91,10 +96,11 @@ namespace glm
 			vecType<T> const & y
 		)
 		{
-			GLM_STATIC_ASSERT(
+			GLM_STATIC_ASSERT((
 				detail::type<T>::is_float || 
 				detail::type<T>::is_int || 
-				detail::type<T>::is_uint, "'greaterThanEqual' only accept numbers");
+				detail::type<T>::is_uint) && detail::is_vector<vecType<T> >::_YES, 
+				"'greaterThanEqual' only accept numbers");
 
 			typename vecType<bool>::bool_type Result(vecType<bool>::null);
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -111,11 +117,7 @@ namespace glm
 			vecType<T> const & y
 		)
 		{
-			GLM_STATIC_ASSERT(
-				detail::type<T>::is_float || 
-				detail::type<T>::is_int || 
-				detail::type<T>::is_uint || 
-				detail::type<T>::is_bool, "'equal' only accept GLM vectors");
+			GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES, "'equal' only accept GLM vectors");
 
 			typename vecType<bool>::bool_type Result(vecType<bool>::null);
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -132,11 +134,7 @@ namespace glm
 			vecType<T> const & y
 		)
 		{
-			GLM_STATIC_ASSERT(
-				detail::type<T>::is_float || 
-				detail::type<T>::is_int || 
-				detail::type<T>::is_uint || 
-				detail::type<T>::is_bool, "'notEqual' only accept GLM vectors");
+			GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES, "'notEqual' only accept GLM vectors");
 
 			typename vecType<bool>::bool_type Result(vecType<bool>::null);
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -149,8 +147,7 @@ namespace glm
 		template <template <typename> class vecType> 
 		inline bool any(vecType<bool> const & v)
 		{
-			GLM_STATIC_ASSERT(
-                                vecType<bool>::is_bool, "'any' only accept GLM boolean vectors");
+			GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES, "'any' only accept GLM boolean vectors");
 
 			bool Result = false;
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -163,8 +160,7 @@ namespace glm
 		template <template <typename> class vecType> 
 		inline bool all(vecType<bool> const & v)
 		{
-			GLM_STATIC_ASSERT(
-                                vecType<bool>::is_bool, "'all' only accept GLM boolean vectors");
+			GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES, "'all' only accept GLM boolean vectors");
 
 			bool Result = true;
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
@@ -177,8 +173,7 @@ namespace glm
 		template <template <typename> class vecType> 
 		inline vecType<bool> not_(vecType<bool> const & v)
 		{
-			GLM_STATIC_ASSERT(
-                                vecType<bool>::is_bool, "'not_' only accept GLM boolean vectors");
+			GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES, "'not_' only accept GLM boolean vectors");
 
 			typename vecType<bool>::bool_type Result(vecType<bool>::null);
 			for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
diff --git a/glm/core/type_vec1.hpp b/glm/core/type_vec1.hpp
index a659a9a2..e6fe5f5d 100644
--- a/glm/core/type_vec1.hpp
+++ b/glm/core/type_vec1.hpp
@@ -38,6 +38,8 @@ namespace glm
 		struct tvec1
 		{
 			enum ctor{null};
+			enum {_size = 1};
+
 			typedef T value_type;
 			typedef std::size_t size_type;
 			static size_type value_size();
@@ -154,6 +156,8 @@ namespace glm
 			T& x;
 		};
 
+		GLM_DETAIL_IS_VECTOR(tvec1);
+
 		typedef detail::tvec1<core::type::precision::highp_float>		highp_vec1_t;
 		typedef detail::tvec1<core::type::precision::mediump_float>		mediump_vec1_t;
 		typedef detail::tvec1<core::type::precision::lowp_float>		lowp_vec1_t;
diff --git a/glm/core/type_vec2.hpp b/glm/core/type_vec2.hpp
index 62072ea9..bfd2ee7e 100644
--- a/glm/core/type_vec2.hpp
+++ b/glm/core/type_vec2.hpp
@@ -36,6 +36,8 @@ namespace glm
 		struct tvec2
 		{
 			enum ctor{null};
+			enum {_size = 2};
+
 			typedef T value_type;
 			typedef std::size_t size_type;
 			static size_type value_size();
@@ -193,6 +195,9 @@ namespace glm
 			T& x;
 			T& y;
 		};
+
+		GLM_DETAIL_IS_VECTOR(tvec2);
+
 	} //namespace detail
 
 	namespace core{
diff --git a/glm/core/type_vec3.hpp b/glm/core/type_vec3.hpp
index 57f228c7..592400ad 100644
--- a/glm/core/type_vec3.hpp
+++ b/glm/core/type_vec3.hpp
@@ -35,6 +35,8 @@ namespace glm
 		struct tvec3
 		{	
 			enum ctor{null};
+			enum {_size = 3};
+
 			typedef T value_type;
 			typedef std::size_t size_type;
 			static size_type value_size();
@@ -199,6 +201,8 @@ namespace glm
 			T & y;
 			T & z;
 		};
+
+		GLM_DETAIL_IS_VECTOR(tvec3);
 	} //namespace detail
 
 	namespace core{
diff --git a/glm/core/type_vec4.hpp b/glm/core/type_vec4.hpp
index 99a701e4..1a4b10f6 100644
--- a/glm/core/type_vec4.hpp
+++ b/glm/core/type_vec4.hpp
@@ -37,6 +37,7 @@ namespace glm
 		{
 			enum ctor{null};
 			enum {_size = 4};
+
 			typedef T value_type;
 			typedef std::size_t size_type;
 			static size_type value_size();
@@ -214,6 +215,8 @@ namespace glm
 			T & z;
 			T & w;
 		};
+
+		GLM_DETAIL_IS_VECTOR(tvec4);
 	} //namespace detail
 
 	namespace core{
diff --git a/test/core/core_type_vec4.cpp b/test/core/core_type_vec4.cpp
index c8175811..b0650c5f 100644
--- a/test/core/core_type_vec4.cpp
+++ b/test/core/core_type_vec4.cpp
@@ -8,6 +8,7 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 #include <glm/glm.hpp>
+#include <glm/gtc/half_float.hpp>
 #include <xmmintrin.h>
 #include <emmintrin.h>
 
@@ -32,8 +33,18 @@ __m128 swizzle(glm::vec4 const & v)
 	return _mm_shuffle_ps(Src, Src, mask<(int(W) << 6) | (int(Z) << 4) | (int(Y) << 2) | (int(X) << 0)>::value);
 }
 
+void test_hvec4()
+{
+	glm::hvec4 const A = glm::hvec4(0, 1, 2, 3);
+	//glm::hvec4 B = glm::swizzle<glm::X, glm::Y, glm::Z, glm::W>(A);
+
+	//glm::vec4 B = glm::detail::tvec##(glm::vec4::_size)<float>();
+}
+
 int main()
 {
+	test_hvec4();
+
 	__m128 DataA = swizzle<X, Y, Z, W>(glm::vec4(1.0f, 2.0f, 3.0f, 4.0f));
 	__m128 DataB = swizzle<W, Z, Y, X>(glm::vec4(1.0f, 2.0f, 3.0f, 4.0f));