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SIMD.Bool32x4

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The SIMD.Bool32x4 data type is a 128-bit vector divided into 4 lanes storing boolean values.

Syntax

SIMD.Bool32x4(x, y, z, w);

Parameters

x Optional: A boolean specifying the value of the first lane. Defaults to false.
y Optional: A boolean specifying the value of the second lane. Defaults to false.
z Optional: A boolean specifying the value of the third lane. Defaults to false.
w Optional: A boolean specifying the value of the fourth lane. Defaults to false.

Constructor functions

In addition to the simple creator function, the SIMD API provides the following constructor functions.

SIMD.Bool32x4.splat(): Creates an Bool32x4 with all lanes set to a given value.

Note: SIMD types don't work with new, as SIMD values are no "boxed" objects (comparable to String(s) vs. new String(s), which creates a String object).

var v = new SIMD.Bool32x4(true, false, true, false); 
// TypeError: SIMD.Bool32x4 is not a constructor
var w = new SIMD.Bool32x4.splat(true); 
// TypeError: SIMD.Bool32x4.splat is not a constructor

Instead, you just write:

var v = SIMD.Bool32x4(true, false, true, false);
var w = SIMD.Bool32x4.splat(true);

Operations

To actually do something with SIMD types, SIMD operations are needed that work on SIMD data types.

Checking SIMD types

SIMD.Bool32x4.check(): Returns a new Bool32x4 if the parameter is a valid Bool32x4 data type. Throws a TypeError otherwise.

Accessing and mutating lanes

SIMD.Bool32x4.extractLane(): Returns the value of the given lane.
SIMD.Bool32x4.replaceLane(): Returns a new Bool16x8 with the given lane value replaced.

Boolean operations
SIMD.Bool32x4.allTrue(): Checks if all lanes hold a true value.
SIMD.Bool32x4.anyTrue(): Checks if any of the lanes hold a true value.

Bitwise logical operations

SIMD.Bool32x4.and(): Returns a new Bool32x4 with the logical AND of the lane values (a & b).
SIMD.Bool32x4.or(): Returns a new Bool32x4 with the logical OR of the lane values (a | b).
SIMD.Bool32x4.xor(): Returns a new Bool32x4 with the logical XOR of the lane values (a ^ b).
SIMD.Bool32x4.not(): Returns a new Bool32x4 with lane with the logical NOT of the lane values (~a).

SIMD prototype

The following methods and properties are installed on the SIMD.Bool32x4.prototype.

SIMD.Bool32x4.prototype.constructor: Specifies the function that creates a SIMD object's prototype.
SIMD.Bool32x4.prototype.toLocaleString(): Returns a localized string representing the SIMD type and its elements. Overrides the Object.prototype.toLocaleString() method.
SIMD.Bool32x4.prototype.toString(): Returns a string representing the SIMD type and its elements. Overrides the Object.prototype.toString() method.
SIMD.Bool32x4.prototype.valueOf(): Returns the primitive value of a SIMD object.
SIMD.Bool32x4.prototype.toSource(): Returns a string representing the source code of the object. Overrides the Object.prototype.toSource() method.

Examples

Constructing a Bool32x4

SIMD.Bool32x4(true, false, true, false); // Bool32x4[true, false, true, false]
SIMD.Bool32x4(true, false);              // Bool32x4[true, false, false, false]
SIMD.Bool32x4();                         // Bool32x4[false, false, false, false]

Specifications

Specification	Status	Comment
SIMD The definition of 'Bool32x4' 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

SIMD.Bool32x4

Syntax

Parameters

Constructor functions

Operations

Checking SIMD types

Accessing and mutating lanes

Boolean operations

Bitwise logical operations

SIMD prototype

Examples

Constructing a Bool32x4

Specifications

Browser compatibility

See also