paper committed

cpp/glm/detail/func_exponential.hpp

+///////////////////////////////////////////////////////////////////////////////////
+/// 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.
+/// 
+/// Restrictions:
+///		By making use of the Software for military purposes, you choose to make
+///		a Bunny unhappy.
+/// 
+/// 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/func_exponential.hpp
+/// @date 2008-08-08 / 2011-06-14
+/// @author Christophe Riccio
+/// 
+/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+///
+/// @defgroup core_func_exponential Exponential functions
+/// @ingroup core
+/// 
+/// These all operate component-wise. The description is per component.
+///////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "type_vec1.hpp"
+#include "type_vec2.hpp"
+#include "type_vec3.hpp"
+#include "type_vec4.hpp"
+#include <cmath>
+
+namespace glm
+{
+	/// @addtogroup core_func_exponential
+	/// @{
+
+	/// Returns 'base' raised to the power 'exponent'. 
+	///
+	/// @param base Floating point value. pow function is defined for input values of 'base' defined in the range (inf-, inf+) in the limit of the type precision.
+	/// @param exponent Floating point value representing the 'exponent'.
+	/// @tparam genType Floating-point scalar or vector types.
+	///
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/pow.xml">GLSL pow man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> pow(vecType<T, P> const & base, vecType<T, P> const & exponent);
+
+	/// Returns the natural exponentiation of x, i.e., e^x.
+	///
+	/// @param v exp function is defined for input values of v defined in the range (inf-, inf+) in the limit of the type precision.
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/exp.xml">GLSL exp man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> exp(vecType<T, P> const & v);
+
+	/// Returns the natural logarithm of v, i.e., 
+	/// returns the value y which satisfies the equation x = e^y. 
+	/// Results are undefined if v <= 0.
+	///
+	/// @param v log function is defined for input values of v defined in the range (0, inf+) in the limit of the type precision.
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/log.xml">GLSL log man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> log(vecType<T, P> const & v);
+
+	/// Returns 2 raised to the v power.
+	/// 
+	/// @param v exp2 function is defined for input values of v defined in the range (inf-, inf+) in the limit of the type precision.
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/exp2.xml">GLSL exp2 man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> exp2(vecType<T, P> const & v);
+
+	/// Returns the base 2 log of x, i.e., returns the value y, 
+	/// which satisfies the equation x = 2 ^ y.
+	/// 
+	/// @param v log2 function is defined for input values of v defined in the range (0, inf+) in the limit of the type precision.
+	/// @tparam genType Floating-point scalar or vector types.
+	///
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/log2.xml">GLSL log2 man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> log2(vecType<T, P> const & v);
+
+	/// Returns the positive square root of v.
+	/// 
+	/// @param v sqrt function is defined for input values of v defined in the range [0, inf+) in the limit of the type precision.
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/sqrt.xml">GLSL sqrt man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+	//template <typename genType>
+	//GLM_FUNC_DECL genType sqrt(genType const & x);
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> sqrt(vecType<T, P> const & v);
+	
+	/// Returns the reciprocal of the positive square root of v.
+	/// 
+	/// @param v inversesqrt function is defined for input values of v defined in the range [0, inf+) in the limit of the type precision.
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/inversesqrt.xml">GLSL inversesqrt man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.2 Exponential Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> inversesqrt(vecType<T, P> const & v);
+
+	/// @}
+}//namespace glm
+
+#include "func_exponential.inl"

cpp/glm/detail/func_exponential.inl

+///////////////////////////////////////////////////////////////////////////////////
+/// 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.
+/// 
+/// Restrictions:
+///		By making use of the Software for military purposes, you choose to make
+///		a Bunny unhappy.
+/// 
+/// 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/func_exponential.inl
+/// @date 2008-08-03 / 2011-06-15
+/// @author Christophe Riccio
+///////////////////////////////////////////////////////////////////////////////////
+
+#include "func_vector_relational.hpp"
+#include "_vectorize.hpp"
+#include <limits>
+#include <cmath>
+#include <cassert>
+
+namespace glm{
+namespace detail
+{
+#	if GLM_HAS_CXX11_STL
+		using std::log2;
+#	else
+		template <typename genType>
+		genType log2(genType Value)
+		{
+			return std::log(Value) * static_cast<genType>(1.4426950408889634073599246810019);
+		}
+#	endif
+
+	template <typename T, precision P, template <class, precision> class vecType, bool isFloat = true>
+	struct compute_log2
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & vec)
+		{
+			return detail::functor1<T, T, P, vecType>::call(log2, vec);
+		}
+	};
+
+	template <template <class, precision> class vecType, typename T, precision P>
+	struct compute_inversesqrt
+	{
+		GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & x)
+		{
+			return static_cast<T>(1) / sqrt(x);
+		}
+	};
+		
+	template <template <class, precision> class vecType>
+	struct compute_inversesqrt<vecType, float, lowp>
+	{
+		GLM_FUNC_QUALIFIER static vecType<float, lowp> call(vecType<float, lowp> const & x)
+		{
+			vecType<float, lowp> tmp(x);
+			vecType<float, lowp> xhalf(tmp * 0.5f);
+			vecType<uint, lowp>* p = reinterpret_cast<vecType<uint, lowp>*>(const_cast<vecType<float, lowp>*>(&x));
+			vecType<uint, lowp> i = vecType<uint, lowp>(0x5f375a86) - (*p >> vecType<uint, lowp>(1));
+			vecType<float, lowp>* ptmp = reinterpret_cast<vecType<float, lowp>*>(&i);
+			tmp = *ptmp;
+			tmp = tmp * (1.5f - xhalf * tmp * tmp);
+			return tmp;
+		}
+	};
+}//namespace detail
+
+	// pow
+	using std::pow;
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> pow(vecType<T, P> const & base, vecType<T, P> const & exponent)
+	{
+		return detail::functor2<T, P, vecType>::call(pow, base, exponent);
+	}
+
+	// exp
+	using std::exp;
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> exp(vecType<T, P> const & x)
+	{
+		return detail::functor1<T, T, P, vecType>::call(exp, x);
+	}
+
+	// log
+	using std::log;
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> log(vecType<T, P> const & x)
+	{
+		return detail::functor1<T, T, P, vecType>::call(log, x);
+	}
+
+	//exp2, ln2 = 0.69314718055994530941723212145818f
+	template <typename genType>
+	GLM_FUNC_QUALIFIER genType exp2(genType x)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_iec559, "'exp2' only accept floating-point inputs");
+
+		return std::exp(static_cast<genType>(0.69314718055994530941723212145818) * x);
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> exp2(vecType<T, P> const & x)
+	{
+		return detail::functor1<T, T, P, vecType>::call(exp2, x);
+	}
+
+	// log2, ln2 = 0.69314718055994530941723212145818f
+	template <typename genType>
+	GLM_FUNC_QUALIFIER genType log2(genType x)
+	{
+		return log2(tvec1<genType>(x)).x;
+	}
+
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> log2(vecType<T, P> const & x)
+	{
+		return detail::compute_log2<T, P, vecType, std::numeric_limits<T>::is_iec559>::call(x);
+	}
+
+	// sqrt
+	using std::sqrt;
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> sqrt(vecType<T, P> const & x)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'sqrt' only accept floating-point inputs");
+		return detail::functor1<T, T, P, vecType>::call(sqrt, x);
+	}
+
+	// inversesqrt
+	template <typename genType>
+	GLM_FUNC_QUALIFIER genType inversesqrt(genType x)
+	{
+		return static_cast<genType>(1) / sqrt(x);
+	}
+	
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_QUALIFIER vecType<T, P> inversesqrt(vecType<T, P> const & x)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'inversesqrt' only accept floating-point inputs");
+		return detail::compute_inversesqrt<vecType, T, P>::call(x);
+	}
+}//namespace glm

cpp/glm/detail/func_geometric.hpp

+///////////////////////////////////////////////////////////////////////////////////
+/// 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.
+/// 
+/// Restrictions:
+///		By making use of the Software for military purposes, you choose to make
+///		a Bunny unhappy.
+/// 
+/// 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/func_geometric.hpp
+/// @date 2008-08-03 / 2011-06-14
+/// @author Christophe Riccio
+///
+/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+/// 
+/// @defgroup core_func_geometric Geometric functions
+/// @ingroup core
+/// 
+/// These operate on vectors as vectors, not component-wise.
+///////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "type_vec3.hpp"
+
+namespace glm
+{
+	/// @addtogroup core_func_geometric
+	/// @{
+
+	/// Returns the length of x, i.e., sqrt(x * x).
+	/// 
+	/// @tparam genType Floating-point vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/length.xml">GLSL length man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL T length(
+		vecType<T, P> const & x);
+
+	/// Returns the distance betwwen p0 and p1, i.e., length(p0 - p1).
+	///
+	/// @tparam genType Floating-point vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/distance.xml">GLSL distance man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL T distance(
+		vecType<T, P> const & p0,
+		vecType<T, P> const & p1);
+
+	/// Returns the dot product of x and y, i.e., result = x * y.
+	///
+	/// @tparam genType Floating-point vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/dot.xml">GLSL dot man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL T dot(
+		vecType<T, P> const & x,
+		vecType<T, P> const & y);
+
+	/// Returns the cross product of x and y.
+	///
+	/// @tparam valType Floating-point scalar types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/cross.xml">GLSL cross man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename T, precision P>
+	GLM_FUNC_DECL tvec3<T, P> cross(
+		tvec3<T, P> const & x,
+		tvec3<T, P> const & y);
+
+	/// Returns a vector in the same direction as x but with length of 1.
+	/// According to issue 10 GLSL 1.10 specification, if length(x) == 0 then result is undefined and generate an error.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/normalize.xml">GLSL normalize man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> normalize(
+		vecType<T, P> const & x);
+
+	/// If dot(Nref, I) < 0.0, return N, otherwise, return -N.
+	///
+	/// @tparam genType Floating-point vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/faceforward.xml">GLSL faceforward man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> faceforward(
+		vecType<T, P> const & N,
+		vecType<T, P> const & I,
+		vecType<T, P> const & Nref);
+
+	/// For the incident vector I and surface orientation N, 
+	/// returns the reflection direction : result = I - 2.0 * dot(N, I) * N.
+	///
+	/// @tparam genType Floating-point vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/reflect.xml">GLSL reflect man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename genType>
+	GLM_FUNC_DECL genType reflect(
+		genType const & I,
+		genType const & N);
+
+	/// For the incident vector I and surface normal N, 
+	/// and the ratio of indices of refraction eta, 
+	/// return the refraction vector.
+	///
+	/// @tparam genType Floating-point vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/refract.xml">GLSL refract man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a>
+	template <typename T, precision P, template <typename, precision> class vecType>
+	GLM_FUNC_DECL vecType<T, P> refract(
+		vecType<T, P> const & I,
+		vecType<T, P> const & N,
+		T eta);
+
+	/// @}
+}//namespace glm
+
+#include "func_geometric.inl"

cpp/glm/detail/func_noise.hpp

+///////////////////////////////////////////////////////////////////////////////////
+/// 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.
+/// 
+/// Restrictions:
+///		By making use of the Software for military purposes, you choose to make
+///		a Bunny unhappy.
+/// 
+/// 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/func_noise.hpp
+/// @date 2008-08-01 / 2011-06-18
+/// @author Christophe Riccio
+///
+/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
+/// 
+/// @defgroup core_func_noise Noise functions
+/// @ingroup core
+/// 
+/// Noise functions are stochastic functions that can be used to increase visual 
+/// complexity. Values returned by the following noise functions give the 
+/// appearance of randomness, but are not truly random.
+///////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "type_vec1.hpp"
+#include "type_vec2.hpp"
+#include "type_vec3.hpp"
+#include "setup.hpp"
+
+namespace glm
+{
+	/// @addtogroup core_func_noise
+	/// @{
+
+	/// Returns a 1D noise value based on the input value x.
+	///
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise1.xml">GLSL noise1 man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
+	template <typename genType>
+	GLM_FUNC_DECL typename genType::value_type noise1(genType const & x);
+
+	/// Returns a 2D noise value based on the input value x.
+	///
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise2.xml">GLSL noise2 man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
+	template <typename genType>
+	GLM_FUNC_DECL tvec2<typename genType::value_type, defaultp> noise2(genType const & x);
+
+	/// Returns a 3D noise value based on the input value x.
+	///
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise3.xml">GLSL noise3 man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
+	template <typename genType>
+	GLM_FUNC_DECL tvec3<typename genType::value_type, defaultp> noise3(genType const & x);
+
+	/// Returns a 4D noise value based on the input value x.
+	///
+	/// @tparam genType Floating-point scalar or vector types.
+	/// 
+	/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise4.xml">GLSL noise4 man page</a>
+	/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
+	template <typename genType>
+	GLM_FUNC_DECL tvec4<typename genType::value_type, defaultp> noise4(genType const & x);
+
+	/// @}
+}//namespace glm
+
+#include "func_noise.inl"