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+///////////////////////////////////////////////////////////////////////////////////
+/// OpenGL Mathematics (glm.g-truc.net)
+///
+/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
+/// Permission is hereby granted, free of charge, to any person obtaining a copy
+/// of this software and associated documentation files (the "Software"), to deal
+/// in the Software without restriction, including without limitation the rights
+/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+/// copies of the Software, and to permit persons to whom the Software is
+/// furnished to do so, subject to the following conditions:
+/// 
+/// The above copyright notice and this permission notice shall be included in
+/// all copies or substantial portions of the Software.
+/// 
+/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+/// THE SOFTWARE.
+///
+/// @ref core
+/// @file glm/detail/intrinsic_exponential.hpp
+/// @date 2009-05-11 / 2011-06-15
+/// @author Christophe Riccio
+///////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "setup.hpp"
+
+#if(!(GLM_ARCH & GLM_ARCH_SSE2))
+#	error "SSE2 instructions not supported or enabled"
+#else
+
+namespace glm{
+namespace detail
+{
+/*
+GLM_FUNC_QUALIFIER __m128 sse_rsqrt_nr_ss(__m128 const x)
+{
+	__m128 recip = _mm_rsqrt_ss( x );  // "estimate" opcode
+	const static __m128 three = { 3, 3, 3, 3 }; // aligned consts for fast load
+	const static __m128 half = { 0.5,0.5,0.5,0.5 };
+	__m128 halfrecip = _mm_mul_ss( half, recip );
+	__m128 threeminus_xrr = _mm_sub_ss( three, _mm_mul_ss( x, _mm_mul_ss ( recip, recip ) ) );
+	return _mm_mul_ss( halfrecip, threeminus_xrr );
+}
+ 
+GLM_FUNC_QUALIFIER __m128 sse_normalize_fast_ps(  float * RESTRICT vOut, float * RESTRICT vIn )
+{
+        __m128 x = _mm_load_ss(&vIn[0]);
+        __m128 y = _mm_load_ss(&vIn[1]);
+        __m128 z = _mm_load_ss(&vIn[2]);
+ 
+        const __m128 l =  // compute x*x + y*y + z*z
+                _mm_add_ss(
+                 _mm_add_ss( _mm_mul_ss(x,x),
+                             _mm_mul_ss(y,y)
+                            ),
+                 _mm_mul_ss( z, z )
+                );
+ 
+ 
+        const __m128 rsqt = _mm_rsqrt_nr_ss( l );
+        _mm_store_ss( &vOut[0] , _mm_mul_ss( rsqt, x ) );
+        _mm_store_ss( &vOut[1] , _mm_mul_ss( rsqt, y ) );
+        _mm_store_ss( &vOut[2] , _mm_mul_ss( rsqt, z ) );
+ 
+        return _mm_mul_ss( l , rsqt );
+}
+*/
+}//namespace detail
+}//namespace glm
+
+#endif//GLM_ARCH