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diff --git a/src/include/glm/gtc/round.hpp b/src/include/glm/gtc/round.hpp
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+/// @ref gtc_round
+/// @file glm/gtc/round.hpp
+///
+/// @see core (dependence)
+/// @see gtc_round (dependence)
+///
+/// @defgroup gtc_round GLM_GTC_round
+/// @ingroup gtc
+///
+/// Include <glm/gtc/round.hpp> to use the features of this extension.
+///
+/// Rounding value to specific boundings
+
+#pragma once
+
+// Dependencies
+#include "../detail/setup.hpp"
+#include "../detail/qualifier.hpp"
+#include "../detail/_vectorize.hpp"
+#include "../vector_relational.hpp"
+#include "../common.hpp"
+#include <limits>
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_GTC_round extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtc_round
+	/// @{
+
+	/// Return the power of two number which value is just higher the input value,
+	/// round up to a power of two.
+	///
+	/// @see gtc_round
+	template<typename genIUType>
+	GLM_FUNC_DECL genIUType ceilPowerOfTwo(genIUType v);
+
+	/// Return the power of two number which value is just higher the input value,
+	/// round up to a power of two.
+	///
+	/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
+	/// @tparam T Floating-point or integer scalar types
+	/// @tparam Q Value from qualifier enum
+	///
+	/// @see gtc_round
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL vec<L, T, Q> ceilPowerOfTwo(vec<L, T, Q> const& v);
+
+	/// Return the power of two number which value is just lower the input value,
+	/// round down to a power of two.
+	///
+	/// @see gtc_round
+	template<typename genIUType>
+	GLM_FUNC_DECL genIUType floorPowerOfTwo(genIUType v);
+
+	/// Return the power of two number which value is just lower the input value,
+	/// round down to a power of two.
+	///
+	/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
+	/// @tparam T Floating-point or integer scalar types
+	/// @tparam Q Value from qualifier enum
+	///
+	/// @see gtc_round
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL vec<L, T, Q> floorPowerOfTwo(vec<L, T, Q> const& v);
+
+	/// Return the power of two number which value is the closet to the input value.
+	///
+	/// @see gtc_round
+	template<typename genIUType>
+	GLM_FUNC_DECL genIUType roundPowerOfTwo(genIUType v);
+
+	/// Return the power of two number which value is the closet to the input value.
+	///
+	/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
+	/// @tparam T Floating-point or integer scalar types
+	/// @tparam Q Value from qualifier enum
+	///
+	/// @see gtc_round
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL vec<L, T, Q> roundPowerOfTwo(vec<L, T, Q> const& v);
+
+	/// Higher multiple number of Source.
+	///
+	/// @tparam genType Floating-point or integer scalar or vector types.
+	///
+	/// @param v Source value to which is applied the function
+	/// @param Multiple Must be a null or positive value
+	///
+	/// @see gtc_round
+	template<typename genType>
+	GLM_FUNC_DECL genType ceilMultiple(genType v, genType Multiple);
+
+	/// Higher multiple number of Source.
+	///
+	/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
+	/// @tparam T Floating-point or integer scalar types
+	/// @tparam Q Value from qualifier enum
+	///
+	/// @param v Source values to which is applied the function
+	/// @param Multiple Must be a null or positive value
+	///
+	/// @see gtc_round
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL vec<L, T, Q> ceilMultiple(vec<L, T, Q> const& v, vec<L, T, Q> const& Multiple);
+
+	/// Lower multiple number of Source.
+	///
+	/// @tparam genType Floating-point or integer scalar or vector types.
+	///
+	/// @param v Source value to which is applied the function
+	/// @param Multiple Must be a null or positive value
+	///
+	/// @see gtc_round
+	template<typename genType>
+	GLM_FUNC_DECL genType floorMultiple(genType v, genType Multiple);
+
+	/// Lower multiple number of Source.
+	///
+	/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
+	/// @tparam T Floating-point or integer scalar types
+	/// @tparam Q Value from qualifier enum
+	///
+	/// @param v Source values to which is applied the function
+	/// @param Multiple Must be a null or positive value
+	///
+	/// @see gtc_round
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL vec<L, T, Q> floorMultiple(vec<L, T, Q> const& v, vec<L, T, Q> const& Multiple);
+
+	/// Lower multiple number of Source.
+	///
+	/// @tparam genType Floating-point or integer scalar or vector types.
+	///
+	/// @param v Source value to which is applied the function
+	/// @param Multiple Must be a null or positive value
+	///
+	/// @see gtc_round
+	template<typename genType>
+	GLM_FUNC_DECL genType roundMultiple(genType v, genType Multiple);
+
+	/// Lower multiple number of Source.
+	///
+	/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
+	/// @tparam T Floating-point or integer scalar types
+	/// @tparam Q Value from qualifier enum
+	///
+	/// @param v Source values to which is applied the function
+	/// @param Multiple Must be a null or positive value
+	///
+	/// @see gtc_round
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL vec<L, T, Q> roundMultiple(vec<L, T, Q> const& v, vec<L, T, Q> const& Multiple);
+
+	/// @}
+} //namespace glm
+
+#include "round.inl"