mirror of
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540 lines
27 KiB
C++
540 lines
27 KiB
C++
/// @ref core
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/// @file glm/common.hpp
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///
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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///
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/// @defgroup core_func_common Common functions
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/// @ingroup core
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///
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/// Provides GLSL common functions
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///
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/// These all operate component-wise. The description is per component.
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///
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/// Include <glm/common.hpp> to use these core features.
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#pragma once
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#include "detail/qualifier.hpp"
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#include "detail/_fixes.hpp"
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namespace glm
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{
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/// @addtogroup core_func_common
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/// @{
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/// Returns x if x >= 0; otherwise, it returns -x.
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///
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/// @tparam genType floating-point or signed integer; scalar or vector types.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/abs.xml">GLSL abs man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<typename genType>
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GLM_FUNC_DECL GLM_CONSTEXPR genType abs(genType x);
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/// Returns x if x >= 0; otherwise, it returns -x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point or signed integer scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/abs.xml">GLSL abs man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> abs(vec<L, T, Q> const& x);
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/// Returns 1.0 if x > 0, 0.0 if x == 0, or -1.0 if x < 0.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/sign.xml">GLSL sign man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> sign(vec<L, T, Q> const& x);
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/// Returns a value equal to the nearest integer that is less then or equal to x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/floor.xml">GLSL floor man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> floor(vec<L, T, Q> const& x);
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/// Returns a value equal to the nearest integer to x
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/// whose absolute value is not larger than the absolute value of x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/trunc.xml">GLSL trunc man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> trunc(vec<L, T, Q> const& x);
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/// Returns a value equal to the nearest integer to x.
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/// The fraction 0.5 will round in a direction chosen by the
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/// implementation, presumably the direction that is fastest.
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/// This includes the possibility that round(x) returns the
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/// same value as roundEven(x) for all values of x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/round.xml">GLSL round man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> round(vec<L, T, Q> const& x);
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/// Returns a value equal to the nearest integer to x.
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/// A fractional part of 0.5 will round toward the nearest even
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/// integer. (Both 3.5 and 4.5 for x will return 4.0.)
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/roundEven.xml">GLSL roundEven man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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/// @see <a href="http://developer.amd.com/documentation/articles/pages/New-Round-to-Even-Technique.aspx">New round to even technique</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> roundEven(vec<L, T, Q> const& x);
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/// Returns a value equal to the nearest integer
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/// that is greater than or equal to x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/ceil.xml">GLSL ceil man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> ceil(vec<L, T, Q> const& x);
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/// Return x - floor(x).
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///
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/// @tparam genType Floating-point scalar or vector types.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/fract.xml">GLSL fract man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<typename genType>
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GLM_FUNC_DECL genType fract(genType x);
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/// Return x - floor(x).
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/fract.xml">GLSL fract man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> fract(vec<L, T, Q> const& x);
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template<typename genType>
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GLM_FUNC_DECL genType mod(genType x, genType y);
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> mod(vec<L, T, Q> const& x, T y);
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/// Modulus. Returns x - y * floor(x / y)
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/// for each component in x using the floating point value y.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types, include glm/gtc/integer for integer scalar types support
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/mod.xml">GLSL mod man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> mod(vec<L, T, Q> const& x, vec<L, T, Q> const& y);
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/// Returns the fractional part of x and sets i to the integer
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/// part (as a whole number floating point value). Both the
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/// return value and the output parameter will have the same
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/// sign as x.
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///
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/// @tparam genType Floating-point scalar or vector types.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/modf.xml">GLSL modf man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<typename genType>
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GLM_FUNC_DECL genType modf(genType x, genType& i);
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/// Returns y if y < x; otherwise, it returns x.
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///
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/// @tparam genType Floating-point or integer; scalar or vector types.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/min.xml">GLSL min man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<typename genType>
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GLM_FUNC_DECL GLM_CONSTEXPR genType min(genType x, genType y);
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/// Returns y if y < x; otherwise, it returns x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point or integer scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/min.xml">GLSL min man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> min(vec<L, T, Q> const& x, T y);
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/// Returns y if y < x; otherwise, it returns x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point or integer scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/min.xml">GLSL min man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> min(vec<L, T, Q> const& x, vec<L, T, Q> const& y);
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/// Returns y if x < y; otherwise, it returns x.
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///
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/// @tparam genType Floating-point or integer; scalar or vector types.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/max.xml">GLSL max man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<typename genType>
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GLM_FUNC_DECL GLM_CONSTEXPR genType max(genType x, genType y);
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/// Returns y if x < y; otherwise, it returns x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point or integer scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/max.xml">GLSL max man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> max(vec<L, T, Q> const& x, T y);
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/// Returns y if x < y; otherwise, it returns x.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point or integer scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/max.xml">GLSL max man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> max(vec<L, T, Q> const& x, vec<L, T, Q> const& y);
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/// Returns min(max(x, minVal), maxVal) for each component in x
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/// using the floating-point values minVal and maxVal.
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///
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/// @tparam genType Floating-point or integer; scalar or vector types.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/clamp.xml">GLSL clamp man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<typename genType>
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GLM_FUNC_DECL GLM_CONSTEXPR genType clamp(genType x, genType minVal, genType maxVal);
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/// Returns min(max(x, minVal), maxVal) for each component in x
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/// using the floating-point values minVal and maxVal.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point or integer scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/clamp.xml">GLSL clamp man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> clamp(vec<L, T, Q> const& x, T minVal, T maxVal);
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/// Returns min(max(x, minVal), maxVal) for each component in x
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/// using the floating-point values minVal and maxVal.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point or integer scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/clamp.xml">GLSL clamp man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> clamp(vec<L, T, Q> const& x, vec<L, T, Q> const& minVal, vec<L, T, Q> const& maxVal);
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/// If genTypeU is a floating scalar or vector:
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/// Returns x * (1.0 - a) + y * a, i.e., the linear blend of
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/// x and y using the floating-point value a.
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/// The value for a is not restricted to the range [0, 1].
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///
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/// If genTypeU is a boolean scalar or vector:
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/// Selects which vector each returned component comes
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/// from. For a component of 'a' that is false, the
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/// corresponding component of 'x' is returned. For a
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/// component of 'a' that is true, the corresponding
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/// component of 'y' is returned. Components of 'x' and 'y' that
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/// are not selected are allowed to be invalid floating point
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/// values and will have no effect on the results. Thus, this
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/// provides different functionality than
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/// genType mix(genType x, genType y, genType(a))
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/// where a is a Boolean vector.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/mix.xml">GLSL mix man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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///
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/// @param[in] x Value to interpolate.
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/// @param[in] y Value to interpolate.
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/// @param[in] a Interpolant.
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///
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/// @tparam genTypeT Floating point scalar or vector.
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/// @tparam genTypeU Floating point or boolean scalar or vector. It can't be a vector if it is the length of genTypeT.
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///
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/// @code
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/// #include <glm/glm.hpp>
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/// ...
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/// float a;
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/// bool b;
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/// glm::dvec3 e;
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/// glm::dvec3 f;
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/// glm::vec4 g;
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/// glm::vec4 h;
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/// ...
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/// glm::vec4 r = glm::mix(g, h, a); // Interpolate with a floating-point scalar two vectors.
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/// glm::vec4 s = glm::mix(g, h, b); // Returns g or h;
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/// glm::dvec3 t = glm::mix(e, f, a); // Types of the third parameter is not required to match with the first and the second.
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/// glm::vec4 u = glm::mix(g, h, r); // Interpolations can be perform per component with a vector for the last parameter.
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/// @endcode
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template<typename genTypeT, typename genTypeU>
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GLM_FUNC_DECL genTypeT mix(genTypeT x, genTypeT y, genTypeU a);
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template<length_t L, typename T, typename U, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> mix(vec<L, T, Q> const& x, vec<L, T, Q> const& y, vec<L, U, Q> const& a);
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template<length_t L, typename T, typename U, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> mix(vec<L, T, Q> const& x, vec<L, T, Q> const& y, U a);
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/// Returns 0.0 if x < edge, otherwise it returns 1.0 for each component of a genType.
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/step.xml">GLSL step man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<typename genType>
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GLM_FUNC_DECL genType step(genType edge, genType x);
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/// Returns 0.0 if x < edge, otherwise it returns 1.0.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
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/// @tparam T Floating-point scalar types
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/// @tparam Q Value from qualifier enum
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///
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/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/step.xml">GLSL step man page</a>
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/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
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template<length_t L, typename T, qualifier Q>
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GLM_FUNC_DECL vec<L, T, Q> step(T edge, vec<L, T, Q> const& x);
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/// Returns 0.0 if x < edge, otherwise it returns 1.0.
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///
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/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
|
|
/// @tparam T Floating-point scalar types
|
|
/// @tparam Q Value from qualifier enum
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/step.xml">GLSL step man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<length_t L, typename T, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, T, Q> step(vec<L, T, Q> const& edge, vec<L, T, Q> const& x);
|
|
|
|
/// Returns 0.0 if x <= edge0 and 1.0 if x >= edge1 and
|
|
/// performs smooth Hermite interpolation between 0 and 1
|
|
/// when edge0 < x < edge1. This is useful in cases where
|
|
/// you would want a threshold function with a smooth
|
|
/// transition. This is equivalent to:
|
|
/// genType t;
|
|
/// t = clamp ((x - edge0) / (edge1 - edge0), 0, 1);
|
|
/// return t * t * (3 - 2 * t);
|
|
/// Results are undefined if edge0 >= edge1.
|
|
///
|
|
/// @tparam genType Floating-point scalar or vector types.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/smoothstep.xml">GLSL smoothstep man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<typename genType>
|
|
GLM_FUNC_DECL genType smoothstep(genType edge0, genType edge1, genType x);
|
|
|
|
template<length_t L, typename T, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, T, Q> smoothstep(T edge0, T edge1, vec<L, T, Q> const& x);
|
|
|
|
template<length_t L, typename T, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, T, Q> smoothstep(vec<L, T, Q> const& edge0, vec<L, T, Q> const& edge1, vec<L, T, Q> const& x);
|
|
|
|
/// Returns true if x holds a NaN (not a number)
|
|
/// representation in the underlying implementation's set of
|
|
/// floating point representations. Returns false otherwise,
|
|
/// including for implementations with no NaN
|
|
/// representations.
|
|
///
|
|
/// /!\ When using compiler fast math, this function may fail.
|
|
///
|
|
/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
|
|
/// @tparam T Floating-point scalar types
|
|
/// @tparam Q Value from qualifier enum
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/isnan.xml">GLSL isnan man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<length_t L, typename T, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, bool, Q> isnan(vec<L, T, Q> const& x);
|
|
|
|
/// Returns true if x holds a positive infinity or negative
|
|
/// infinity representation in the underlying implementation's
|
|
/// set of floating point representations. Returns false
|
|
/// otherwise, including for implementations with no infinity
|
|
/// representations.
|
|
///
|
|
/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
|
|
/// @tparam T Floating-point scalar types
|
|
/// @tparam Q Value from qualifier enum
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/isinf.xml">GLSL isinf man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<length_t L, typename T, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, bool, Q> isinf(vec<L, T, Q> const& x);
|
|
|
|
/// Returns a signed integer value representing
|
|
/// the encoding of a floating-point value. The floating-point
|
|
/// value's bit-level representation is preserved.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/floatBitsToInt.xml">GLSL floatBitsToInt man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
GLM_FUNC_DECL int floatBitsToInt(float const& v);
|
|
|
|
/// Returns a signed integer value representing
|
|
/// the encoding of a floating-point value. The floatingpoint
|
|
/// value's bit-level representation is preserved.
|
|
///
|
|
/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
|
|
/// @tparam Q Value from qualifier enum
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/floatBitsToInt.xml">GLSL floatBitsToInt man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<length_t L, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, int, Q> floatBitsToInt(vec<L, float, Q> const& v);
|
|
|
|
/// Returns a unsigned integer value representing
|
|
/// the encoding of a floating-point value. The floatingpoint
|
|
/// value's bit-level representation is preserved.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/floatBitsToUint.xml">GLSL floatBitsToUint man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
GLM_FUNC_DECL uint floatBitsToUint(float const& v);
|
|
|
|
/// Returns a unsigned integer value representing
|
|
/// the encoding of a floating-point value. The floatingpoint
|
|
/// value's bit-level representation is preserved.
|
|
///
|
|
/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
|
|
/// @tparam Q Value from qualifier enum
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/floatBitsToUint.xml">GLSL floatBitsToUint man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<length_t L, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, uint, Q> floatBitsToUint(vec<L, float, Q> const& v);
|
|
|
|
/// Returns a floating-point value corresponding to a signed
|
|
/// integer encoding of a floating-point value.
|
|
/// If an inf or NaN is passed in, it will not signal, and the
|
|
/// resulting floating point value is unspecified. Otherwise,
|
|
/// the bit-level representation is preserved.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/intBitsToFloat.xml">GLSL intBitsToFloat man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
GLM_FUNC_DECL float intBitsToFloat(int const& v);
|
|
|
|
/// Returns a floating-point value corresponding to a signed
|
|
/// integer encoding of a floating-point value.
|
|
/// If an inf or NaN is passed in, it will not signal, and the
|
|
/// resulting floating point value is unspecified. Otherwise,
|
|
/// the bit-level representation is preserved.
|
|
///
|
|
/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
|
|
/// @tparam Q Value from qualifier enum
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/intBitsToFloat.xml">GLSL intBitsToFloat man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<length_t L, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, float, Q> intBitsToFloat(vec<L, int, Q> const& v);
|
|
|
|
/// Returns a floating-point value corresponding to a
|
|
/// unsigned integer encoding of a floating-point value.
|
|
/// If an inf or NaN is passed in, it will not signal, and the
|
|
/// resulting floating point value is unspecified. Otherwise,
|
|
/// the bit-level representation is preserved.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/uintBitsToFloat.xml">GLSL uintBitsToFloat man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
GLM_FUNC_DECL float uintBitsToFloat(uint const& v);
|
|
|
|
/// Returns a floating-point value corresponding to a
|
|
/// unsigned integer encoding of a floating-point value.
|
|
/// If an inf or NaN is passed in, it will not signal, and the
|
|
/// resulting floating point value is unspecified. Otherwise,
|
|
/// the bit-level representation is preserved.
|
|
///
|
|
/// @tparam L Integer between 1 and 4 included that qualify the dimension of the vector
|
|
/// @tparam Q Value from qualifier enum
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/uintBitsToFloat.xml">GLSL uintBitsToFloat man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<length_t L, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, float, Q> uintBitsToFloat(vec<L, uint, Q> const& v);
|
|
|
|
/// Computes and returns a * b + c.
|
|
///
|
|
/// @tparam genType Floating-point scalar or vector types.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/fma.xml">GLSL fma man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<typename genType>
|
|
GLM_FUNC_DECL genType fma(genType const& a, genType const& b, genType const& c);
|
|
|
|
/// Splits x into a floating-point significand in the range
|
|
/// [0.5, 1.0) and an integral exponent of two, such that:
|
|
/// x = significand * exp(2, exponent)
|
|
///
|
|
/// The significand is returned by the function and the
|
|
/// exponent is returned in the parameter exp. For a
|
|
/// floating-point value of zero, the significant and exponent
|
|
/// are both zero. For a floating-point value that is an
|
|
/// infinity or is not a number, the results are undefined.
|
|
///
|
|
/// @tparam genType Floating-point scalar or vector types.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/frexp.xml">GLSL frexp man page</a>
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<typename genType>
|
|
GLM_FUNC_DECL genType frexp(genType x, int& exp);
|
|
|
|
template<length_t L, typename T, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, T, Q> frexp(vec<L, T, Q> const& v, vec<L, int, Q>& exp);
|
|
|
|
/// Builds a floating-point number from x and the
|
|
/// corresponding integral exponent of two in exp, returning:
|
|
/// significand * exp(2, exponent)
|
|
///
|
|
/// If this product is too large to be represented in the
|
|
/// floating-point type, the result is undefined.
|
|
///
|
|
/// @tparam genType Floating-point scalar or vector types.
|
|
///
|
|
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/ldexp.xml">GLSL ldexp man page</a>;
|
|
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
|
|
template<typename genType>
|
|
GLM_FUNC_DECL genType ldexp(genType const& x, int const& exp);
|
|
|
|
template<length_t L, typename T, qualifier Q>
|
|
GLM_FUNC_DECL vec<L, T, Q> ldexp(vec<L, T, Q> const& v, vec<L, int, Q> const& exp);
|
|
|
|
/// @}
|
|
}//namespace glm
|
|
|
|
#include "detail/func_common.inl"
|
|
|