Horizontal Functions

Description

Horizontal Functions.

See also

Masked Horizontal Functions

Subgroups
	Iterative Horizontal Accumulation
	Classes for iterative horizontal accumulation.

Functions
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::hadd (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Horizontally adds adjacent elements of two Vec's.
template<typename T , size_t SIMD_WIDTH>
static T	simd::hadd (const Vec< T, SIMD_WIDTH > &v)
	Adds all elements of a Vec.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::hadd (const Vec< T, SIMD_WIDTH > v[Vec< T, SIMD_WIDTH >::elems])
	Sums the elements of multiple Vec's independently and returns a Vec with the results.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::hadds (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Horizontally adds adjacent elements of two Vec's with saturation.
template<typename T , size_t SIMD_WIDTH>
static T	simd::hadds (const Vec< T, SIMD_WIDTH > &v)
	Adds all elements of a Vec using saturated arithmetic.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::hadds (const Vec< T, SIMD_WIDTH > v[Vec< T, SIMD_WIDTH >::elems])
	Sums the elements of multiple Vec's independently using saturated arithmetic and returns a Vec with the results.
template<typename T , size_t SIMD_WIDTH>
static T	simd::hmax (const Vec< T, SIMD_WIDTH > &v)
	Calculates the maximum of all elements of a Vec.
template<typename T , size_t SIMD_WIDTH>
static T	simd::hmin (const Vec< T, SIMD_WIDTH > &v)
	Calculates the minimum of all elements of a Vec.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::hsub (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Horizontally subtracts adjacent elements of two Vec's.
template<typename T , size_t SIMD_WIDTH>
static Vec< T, SIMD_WIDTH >	simd::hsubs (const Vec< T, SIMD_WIDTH > &a, const Vec< T, SIMD_WIDTH > &b)
	Horizontally subtracts adjacent elements of two Vec's with saturation.
template<typename T , size_t SIMD_WIDTH>
static simd::Vec< T, SIMD_WIDTH >	simd::integrate (const simd::Vec< T, SIMD_WIDTH > &v)
	Integrates the values of a Vec.

Function Documentation

hadd() [1/3]

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::hadd ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Horizontally adds adjacent elements of two Vec's.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the results of the horizontal additions

hadd() [2/3]

template<typename T , size_t SIMD_WIDTH>

static T simd::hadd ( const Vec< T, SIMD_WIDTH > & v )

inlinestatic

Adds all elements of a Vec.

Parameters

v

input Vec

Returns

sum of all elements of the Vec

hadd() [3/3]

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::hadd ( const Vec< T, SIMD_WIDTH > v[Vec< T, SIMD_WIDTH >::elems] )

inlinestatic

Sums the elements of multiple Vec's independently and returns a Vec with the results.

Parameters

[in]

v

array of Vec's to be summed. The number of Vec's must be equal to the number of elements in a Vec

Returns

Vec with the results of the horizontal sums

hadds() [1/3]

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::hadds ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Horizontally adds adjacent elements of two Vec's with saturation.

Note

Does not use saturated arithmetic with floating point types.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the results of the horizontal saturated additions

hadds() [2/3]

template<typename T , size_t SIMD_WIDTH>

static T simd::hadds ( const Vec< T, SIMD_WIDTH > & v )

inlinestatic

Adds all elements of a Vec using saturated arithmetic.

Note

Does not use saturated arithmetic with floating point types.

Parameters

v	Vec to add all elements of

Returns

saturated sum of all elements of the Vec

hadds() [3/3]

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::hadds ( const Vec< T, SIMD_WIDTH > v[Vec< T, SIMD_WIDTH >::elems] )

inlinestatic

Sums the elements of multiple Vec's independently using saturated arithmetic and returns a Vec with the results.

Note

Does not use saturated arithmetic with floating point types.

Parameters

[in]

v

array of Vec's to be summed

Returns

Vec with the results of the saturated horizontal sums

hmax()

template<typename T , size_t SIMD_WIDTH>

static T simd::hmax ( const Vec< T, SIMD_WIDTH > & v )

inlinestatic

Calculates the maximum of all elements of a Vec.

Parameters

v	Vec to calculate the maximum of all elements of

Returns

maximum of all elements of the Vec

hmin()

template<typename T , size_t SIMD_WIDTH>

static T simd::hmin ( const Vec< T, SIMD_WIDTH > & v )

inlinestatic

Calculates the minimum of all elements of a Vec.

Parameters

v	Vec to calculate the minimum of all elements of

Returns

minimum of all elements of the Vec

hsub()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::hsub ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Horizontally subtracts adjacent elements of two Vec's.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the results of the horizontal subtractions

hsubs()

template<typename T , size_t SIMD_WIDTH>

static Vec< T, SIMD_WIDTH > simd::hsubs ( const Vec< T, SIMD_WIDTH > & a, const Vec< T, SIMD_WIDTH > & b )

inlinestatic

Horizontally subtracts adjacent elements of two Vec's with saturation.

Note

Does not use saturated arithmetic with floating point types.

Parameters

a	first Vec
b	second Vec

Returns

Vec containing the results of the horizontal saturated subtractions

integrate()

template<typename T , size_t SIMD_WIDTH>

static simd::Vec< T, SIMD_WIDTH > simd::integrate ( const simd::Vec< T, SIMD_WIDTH > & v )

inlinestatic

Integrates the values of a Vec.

This function integrates the values of a Vec, i.e. it computes the prefix sum of the elements.

Parameters

[in]

v

Vec to integrate

Returns

Vec with integrated values