GLM_GTX_fast_square_root

Fast but less accurate implementations of square root based functions. More...

Collaboration diagram for GLM_GTX_fast_square_root:

Functions
template<typename genType >
GLM_FUNC_DECL genType::value_type	glm::fastDistance (genType const &x, genType const &y)
template<typename genType >
GLM_FUNC_DECL genType	glm::fastInverseSqrt (genType const &x)
template<typename T , precision P, template< typename, precision > class vecType>
GLM_FUNC_DECL vecType< T, P >	glm::fastInverseSqrt (vecType< T, P > const &x)
template<typename genType >
GLM_FUNC_DECL genType::value_type	glm::fastLength (genType const &x)
template<typename genType >
GLM_FUNC_DECL genType	glm::fastNormalize (genType const &x)
template<typename genType >
GLM_FUNC_DECL genType	glm::fastSqrt (genType const &x)

Detailed Description

Fast but less accurate implementations of square root based functions.

• Sqrt optimisation based on Newton's method, www.gamedev.net/community/forums/topic.asp?topic id=139956

<glm/gtx/fast_square_root.hpp> need to be included to use these functionalities.

Function Documentation

fastDistance()

template<typename genType >

GLM_FUNC_DECL genType::value_type glm::fastDistance	(	genType const &	x,
		genType const &	y
	)

Faster than the common distance function but less accurate. From GLM_GTX_fast_square_root extension.

fastInverseSqrt() [1/2]

template<typename genType >

GLM_FUNC_DECL genType glm::fastInverseSqrt

(

genType const &

x

)

Faster than the common inversesqrt function but less accurate. From GLM_GTX_fast_square_root extension.

fastInverseSqrt() [2/2]

template<typename T , precision P, template< typename, precision > class vecType>

GLM_FUNC_DECL vecType<T, P> glm::fastInverseSqrt

(

vecType< T, P > const &

x

)

Faster than the common inversesqrt function but less accurate. From GLM_GTX_fast_square_root extension.

fastLength()

template<typename genType >

GLM_FUNC_DECL genType::value_type glm::fastLength

(

genType const &

x

)

Faster than the common length function but less accurate. From GLM_GTX_fast_square_root extension.

fastNormalize()

template<typename genType >

GLM_FUNC_DECL genType glm::fastNormalize

(

genType const &

x

)

Faster than the common normalize function but less accurate. From GLM_GTX_fast_square_root extension.

fastSqrt()

template<typename genType >

GLM_FUNC_DECL genType glm::fastSqrt

(

genType const &

x

)

Faster than the common sqrt function but less accurate. From GLM_GTX_fast_square_root extension.