Extraction

Description

Functions for extracting elements or lanes from Vec's.

Functions
template<size_t INDEX, typename T , size_t SIMD_WIDTH>
static T	simd::extract (const Vec< T, SIMD_WIDTH > &a)
	Extracts a single value from a Vec.
template<size_t LANE_INDEX, typename T , size_t SIMD_WIDTH>
static Vec< T, 16 >	simd::extractLane (const Vec< T, SIMD_WIDTH > &a)
	Extracts a 16-byte lane from a Vec as a Vec < T, 16 >.

Function Documentation

extract()

template<size_t INDEX, typename T , size_t SIMD_WIDTH>

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

inlinestatic

Extracts a single value from a Vec.

Returns 0 if INDEX is out of range.

Template Parameters

INDEX

index of the value to extract

Parameters

a	Vec to extract from

Returns

extracted value

extractLane()

template<size_t LANE_INDEX, typename T , size_t SIMD_WIDTH>

static Vec< T, 16 > simd::extractLane ( const Vec< T, SIMD_WIDTH > & a )

inlinestatic

Extracts a 16-byte lane from a Vec as a Vec < T, 16 >.

Template Parameters

LANE_INDEX

lane to extract, must be less than SIMD_WIDTH / 16

Parameters

a	Vec to extract a lane from

Returns

extracted lane as a Vec < T, 16 >