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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 static SIMD.%type%.shiftLeftByScalar() method returns a new instance with the lane values shifted left by a given bit count (a << bits).
Syntax
SIMD.Int8x16.shiftLeftByScalar(a, bits) SIMD.Int16x8.shiftLeftByScalar(a, bits) SIMD.Int32x4.shiftLeftByScalar(a, bits) SIMD.Uint8x16.shiftLeftByScalar(a, bits) SIMD.Uint16x8.shiftLeftByScalar(a, bits) SIMD.Uint32x4.shiftLeftByScalar(a, bits)
Parameters
- a
- An instance of a SIMD type.
bits- Bit count to shift by.
Return value
A new corresponding SIMD data type with the lane values shifted left by a given bit count (a << bits).
Description
The bitwise left shift operation shifts the specified number of bits to the left. Excess bits shifted off to the left are discarded. Zero bits are shifted in from the right.
For example, a bitwise left shift of 5 << 1 results in 1010 which is 10 in decimal.
5 0101 ---- 10 1010
Examples
Bitwise left shift of an Int32x4
var a = SIMD.Int32x4(1, 2, 4, 8); SIMD.Int32x4.shiftLeftByScalar(a, 1); // Int32x4[2, 4, 8, 16]
Specifications
| Specification | Status | Comment |
|---|---|---|
| SIMD The definition of 'SIMDConstructor.shiftLeftByScalar' 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 |