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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%.store() methods store a SIMD data type into a typed array.

Syntax

SIMD.Float32x4.store(tarray, index, value)
SIMD.Float32x4.store1(tarray, index, value)
SIMD.Float32x4.store2(tarray, index, value)
SIMD.Float32x4.store3(tarray, index, value)

SIMD.Float64x2.store(tarray, index, value)
SIMD.Float64x2.store1(tarray, index, value)

SIMD.Int32x4.store(tarray, index, value)
SIMD.Int32x4.store1(tarray, index, value)
SIMD.Int32x4.store2(tarray, index, value)
SIMD.Int32x4.store3(tarray, index, value)

SIMD.Int8x16.store(tarray, index, value)
SIMD.Int16x8.store(tarray, index, value) 

SIMD.Uint32x4.store(tarray, index, value)
SIMD.Uint32x4.store1(tarray, index, value)
SIMD.Uint32x4.store2(tarray, index, value)
SIMD.Uint32x4.store3(tarray, index, value)

SIMD.Uint8x16.store(tarray, index, value)
SIMD.Uint16x8.store(tarray, index, value) 

Parameters

tarray
An instance of a typed array. This can be one of:
index
A number for the index from where to start storing in the typed array.
value
An instance of a SIMD data type to store into the typed array.

Return value

The value that has been stored (a SIMD data type).

Exceptions

  • If index is out of range, for example SIMD.Int32x4.store(tarray, -1, value) or bigger than the size of tarray, a RangeError is thrown.
  • If tarray is not one of the typed array types, for example SIMD.Int32x4.store(tarray.buffer, 0) (an array buffer is not valid), a TypeError is thrown.

Description

The SIMD load and store methods intermix with typed arrays. With load, you can pass in typed arrays into SIMD types and with store, SIMD data can be stored into typed arrays.

You can either store all lane values using store(), or only store one, two or three lane values with the methods store1(), store2() or store3().

Examples

The following examples use SIMD.Int32x4 data type stored into an Int32Array.

Storing all values

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store(tarray, 0, value);
// tarray = Int32Array[1, 2, 3, 4, 0, 0, 0, 0]

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store(tarray, 2, value);
// tarray = Int32Array[0, 0, 1, 2, 3, 4, 0, 0]

Storing one value

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store1(tarray, 0, value);
// tarray = Int32Array[1, 0, 0, 0, 0, 0, 0, 0]

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store1(tarray, 2, value);
// tarray = Int32Array[0, 0, 1, 0, 0, 0, 0, 0]

Storing two values

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store2(tarray, 0, value);
// tarray = Int32Array[1, 2, 0, 0, 0, 0, 0, 0]

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store2(tarray, 2, value);
// tarray = Int32Array[0, 0, 1, 2, 0, 0, 0, 0]

Storing three values

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store3(tarray, 0, value);
// tarray = Int32Array[1, 2, 3, 0, 0, 0, 0, 0]

var tarray = new Int32Array(8);
var value = SIMD.Int32x4(1, 2, 3, 4);
SIMD.Int32x4.store3(tarray, 2, value);
// tarray = Int32Array[0, 0, 1, 2, 3, 0, 0, 0]

Specifications

Specification Status Comment
SIMD
The definition of 'SIMDConstructor.store' 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
 Last updated by: fscholz,