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SIMD.js has been taken out of active development in TC39 and removed from Stage 3. It is not being pursued by web browsers for implementation anymore. SIMD operations exposed to the web are under active development within WebAssembly, with operations based on the SIMD.js operations.

The static SIMD.%type%.extractLane() method returns the value of a given lane.

Syntax

SIMD.Float32x4.extractLane(t, index)
SIMD.Float64x2.extractLane(t, index)

SIMD.Int8x16.extractLane(t, index)
SIMD.Int16x8.extractLane(t, index)
SIMD.Int32x4.extractLane(t, index)

SIMD.Uint8x16.extractLane(t, index) 
SIMD.Uint16x8.extractLane(t, index) 
SIMD.Uint32x4.extractLane(t, index)

SIMD.Bool8x16.extractLane(t, index)
SIMD.Bool16x8.extractLane(t, index)
SIMD.Bool32x4.extractLane(t, index)
SIMD.Bool64x2.extractLane(t, index)

Parameters

t
An instance of a corresponding SIMD type.
index
An index number for which lane to extract. Lanes are numbered starting at 0.

Return value

The value of the extracted lane.

Exceptions

  • A TypeError, if t is not the corresponding SIMD type.
  • A RangeError, if the lane index is out of bounds.

Examples

var t = SIMD.Float32x4(1, 2, 3, 4);
SIMD.Float32x4.extractLane(t, 2); 
// 3

Specifications

Specification Status Comment
SIMD
The definition of 'SIMDConstructor.extractLane' in that specification.
Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support Nightly build No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support Nightly build No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: fscholz, afmenez, jolesen
 Last updated by: fscholz,