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.
SIMD.%type%.shiftLeftByScalar() method returns a new instance with the lane values shifted left by a given bit count (
a << bits).
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)
- An instance of a SIMD type.
- Bit count to shift by.
A new corresponding SIMD data type with the lane values shifted left by a given bit count (
a << bits).
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
Bitwise left shift of an
var a = SIMD.Int32x4(1, 2, 4, 8); SIMD.Int32x4.shiftLeftByScalar(a, 1); // Int32x4[2, 4, 8, 16]
The definition of 'SIMDConstructor.shiftLeftByScalar' in that specification.