GLM_GTX_fast_square_root

Functions
template<typename genType >
GLM_FUNC_DECL genType	glm::fastSqrt (genType x)
template<length_t L, typename T , qualifier Q>
GLM_FUNC_DECL vec< L, T, Q >	glm::fastSqrt (vec< L, T, Q > const &x)
template<typename genType >
GLM_FUNC_DECL genType	glm::fastInverseSqrt (genType x)
template<length_t L, typename T , qualifier Q>
GLM_FUNC_DECL vec< L, T, Q >	glm::fastInverseSqrt (vec< L, T, Q > const &x)
template<typename genType >
GLM_FUNC_DECL genType	glm::fastLength (genType x)
template<length_t L, typename T , qualifier Q>
GLM_FUNC_DECL T	glm::fastLength (vec< L, T, Q > const &x)
template<typename genType >
GLM_FUNC_DECL genType	glm::fastDistance (genType x, genType y)
template<length_t L, typename T , qualifier Q>
GLM_FUNC_DECL T	glm::fastDistance (vec< L, T, Q > const &x, vec< L, T, Q > const &y)
template<typename genType >
GLM_FUNC_DECL genType	glm::fastNormalize (genType const &x)

Detailed Description

Include <glm/gtx/fast_square_root.hpp> to use the features of this extension.

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

Function Documentation

fastDistance() [1/2]

template<typename genType >

GLM_FUNC_DECL genType glm::fastDistance	(	genType	x,
		genType	y )

Faster than the common distance function but less accurate.

See also

GLM_GTX_fast_square_root extension.

fastDistance() [2/2]

template<length_t L, typename T , qualifier Q>

GLM_FUNC_DECL T glm::fastDistance	(	vec< L, T, Q > const &	x,
		vec< L, T, Q > const &	y )

Faster than the common distance function but less accurate.

See also

GLM_GTX_fast_square_root extension.

fastInverseSqrt() [1/2]

template<typename genType >

GLM_FUNC_DECL genType glm::fastInverseSqrt

(

genType

x

)

Faster than the common inversesqrt function but less accurate.

See also

GLM_GTX_fast_square_root extension.

fastInverseSqrt() [2/2]

template<length_t L, typename T , qualifier Q>

GLM_FUNC_DECL vec< L, T, Q > glm::fastInverseSqrt

(

vec< L, T, Q > const &

x

)

Faster than the common inversesqrt function but less accurate.

See also

GLM_GTX_fast_square_root extension.

fastLength() [1/2]

template<typename genType >

GLM_FUNC_DECL genType glm::fastLength

(

genType

x

)

Faster than the common length function but less accurate.

See also

GLM_GTX_fast_square_root extension.

fastLength() [2/2]

template<length_t L, typename T , qualifier Q>

GLM_FUNC_DECL T glm::fastLength

(

vec< L, T, Q > const &

x

)

Faster than the common length function but less accurate.

See also

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.

See also

GLM_GTX_fast_square_root extension.

fastSqrt() [1/2]

template<typename genType >

GLM_FUNC_DECL genType glm::fastSqrt

(

genType

x

)

Faster than the common sqrt function but less accurate.

See also

GLM_GTX_fast_square_root extension.

fastSqrt() [2/2]

template<length_t L, typename T , qualifier Q>

GLM_FUNC_DECL vec< L, T, Q > glm::fastSqrt

(

vec< L, T, Q > const &

x

)

Faster than the common sqrt function but less accurate.

See also

GLM_GTX_fast_square_root extension.