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The SIMD.Uint16x8
data type is a 128-bit vector divided into 8 lanes storing 16-bit unsigned integer values.
Syntax
SIMD.Uint16x8(s0, s1, s2, s3, s4, s5, s6, s7);
Parameters
s[0-7]
Optional- An integer specifying the value of the lane. Defaults to 0.
Constructor functions
In addition to the simple creator function, the SIMD API provides the following constructor functions.
SIMD.Uint16x8.splat()
- Creates a Uint16x8 with all lanes set to a given value.
You can also convert from another SIMD data type to Uint16x8.
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.Uint16x8(1,2,3,4,5,6,7,8); // TypeError: SIMD.Uint16x8 is not a constructor var w = new SIMD.Uint16x8.splat(3); // TypeError: SIMD.Uint16x8.splat is not a constructor
Instead, you just write:
var v = SIMD.Uint16x8(1,2,3,4,5,6,7,8); var w = SIMD.Uint16x8.splat(3);
Operations
To actually do something with SIMD types, SIMD operations are needed that work on SIMD data types.
Checking SIMD types
SIMD.Uint16x8.check()
- Returns a new Uint16x8 if the parameter is a valid Int16x8 data type. Throws a
TypeError
otherwise.
Accessing and mutating lanes
SIMD.Uint16x8.extractLane()
- Returns the value of the given lane.
SIMD.Uint16x8.replaceLane()
- Returns a new Uint16x8 with the given lane value replaced.
Loading from and storing into typed arrays
SIMD.Uint16x8.load()
- Returns a new Uint16x8 with the lane values loaded from a typed array.
SIMD.Uint16x8.store()
- Stores an Uint16x8 into a typed array.
Arithmetic operations
SIMD.Uint16x8.add()
- Returns a new Uint16x8 with the lane values added (
a + b
). SIMD.Uint16x8.addSaturate()
- Returns a new Uint16x8 with the lane values added (
a + b
) and saturating behavior on overflow. SIMD.Uint16x8.mul()
- Returns a new Uint16x8 with the lane values multiplied (
a * b
). SIMD.Uint16x8.neg()
- Returns a new Uint16x8 with the negated lane values.
SIMD.Uint16x8.sub()
- Returns a new Uint16x8 with the lane values subtracted (
a - b
). SIMD.Uint16x8.subSaturate()
- Returns a new Uint16x8 with the lane values subtracted (
a - b
) and saturating behavior on overflow. -
Shuffling and swizzling
SIMD.Uint16x8.shuffle()
- Returns a new Uint16x8 with the lane values shuffled.
SIMD.Uint16x8.swizzle()
- Returns a new Uint16x8 with the lane values swizzled.
Selections
SIMD.Uint16x8.select()
- Returns a new Uint16x8 with the lane values being a mix of the lanes depending on the selector mask.
Comparisons
SIMD.Uint16x8.equal()
- Returns a selection mask depending on
a == b
. SIMD.Uint16x8.notEqual()
- Returns a selection mask depending on
a != b
. SIMD.Uint16x8.lessThan()
- Returns a selection mask depending on
a < b
. SIMD.Uint16x8.lessThanOrEqual()
- Returns a selection mask depending on
a <= b
. SIMD.Uint16x8.greaterThan()
- Returns a selection mask depending on
a > b
. SIMD.Uint16x8.greaterThanOrEqual()
- Returns a selection mask depending on
a >= b
.
Bitwise logical operations
SIMD.Uint16x8.and()
- Returns a new Uint16x8 with the logical AND of the lane values (
a & b
). SIMD.Uint16x8.or()
- Returns a new Uint16x8 with the logical OR of the lane values (
a | b
). SIMD.Uint16x8.xor()
- Returns a new Uint16x8 with the logical XOR of the lane values (
a ^ b
). SIMD.Uint16x8.not()
- Returns a new Uint16x8 with lane with the logical NOT of the lane values (
~a
).
Bitwise shift operations
SIMD.Uint16x8.shiftLeftByScalar()
- Returns a new Uint16x8 with the lane values shifted left by a given bit count (
a << bits
). SIMD.Uint16x8.shiftRightByScalar()
- Returns a new Uint16x8 with the lane values shifted right.
Data conversions
SIMD.Uint16x8.fromFloat32x4Bits()
- Creates a new Uint16x8 data type with a bit-wise copy from a Float32x4.
SIMD.Uint16x8.fromFloat64x2Bits()
- Creates a new Uint16x8 data type with a bit-wise copy from a Float64x2.
SIMD.Uint16x8.fromInt32x4Bits()
- Creates a new Uint16x8 data type with a bit-wise copy from an Int32x4.
SIMD.Uint16x8.fromInt16x8Bits()
- Creates a new Uint16x8 data type with a bit-wise copy from an Int16x8.
SIMD.Uint16x8.fromInt8x16Bits()
- Creates a new Uint16x8 data type with a bit-wise copy from an Int8x16.
SIMD.Uint16x8.fromUint32x4Bits()
- Creates a new Uint16x8 data type with a bit-wise copy from a Uint32x4.
SIMD.Uint16x8.fromUint8x16Bits()
- Creates a new Uint16x8 data type with a bit-wise copy from a Uint8x16.
SIMD prototype
The following methods and properties are installed on the SIMD.Uint16x8.prototype
.
SIMD.Uint16x8.prototype.constructor
- Specifies the function that creates a SIMD object's prototype.
SIMD.Uint16x8.prototype.toLocaleString()
- Returns a localized string representing the SIMD type and its elements. Overrides the
Object.prototype.toLocaleString()
method. SIMD.Uint16x8.prototype.toString()
- Returns a string representing the SIMD type and its elements. Overrides the
Object.prototype.toString()
method. SIMD.Uint16x8.prototype.valueOf()
- Returns the primitive value of a SIMD object.
SIMD.Uint16x8.prototype.toSource()
- Returns a string representing the source code of the object. Overrides the
Object.prototype.toSource()
method.
Examples
Constructing a Uint16x8
SIMD.Uint16x8(1, 2, 3, 4, 5, 6, 7, 8); // Int16x8[1,2,3,4,5,6,7,8] SIMD.Uint16x8(1, 2); // Int16x8[1,2,0,0,0,0,0,0] SIMD.Uint16x8(); // Int16x8[0,0,0,0,0,0,0,0]
Specifications
Specification | Status | Comment |
---|---|---|
SIMD The definition of 'Uint16x8' 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 |