SIMD.fromUint8x16Bits

SIMD.js已经从TC39中取消了积极的开发，并从第三阶段中删除了。它不再被网页浏览器所追求。暴露在 web 上的SIMD 操作在 WebAssembly 中正处于积极的发展之中, 其操作基于 SIMD. js 操作。

静态SIMD.%type%.fromUint8x16Bits()方法使用Uint8x16的逐位副本创建新的SIMD数据类型。

语法

SIMD.Float64x2.fromUint8x16Bits(t)
SIMD.Float32x4.fromUint8x16Bits(t)

SIMD.Int32x4.fromUint8x16Bits(t)
SIMD.Int16x8.fromUint8x16Bits(t)
SIMD.Int8x16.fromUint8x16Bits(t)

SIMD.Uint32x4.fromUint8x16Bits(t)
SIMD.Uint16x8.fromUint8x16Bits(t)

参数

t从（按位）转换的Uint8x16 SIMD类型。

返回值

一个新的SIMD数据类型，具有Uint8x16的逐位拷贝。

例子

SIMD.Float64x2.fromUint8x16Bits

var t = SIMD.Uint8x16(0, 0, 0, 0, 0, 0, -16, 63, 0, 0, 0, 0, 0, 0, 0, 64
SIMD.Float64x2.fromUint8x16Bits(t
// Float64x2[1.0, 2.0]

SIMD.Float32x4.fromUint8x16Bits

var t = SIMD.Uint8x16(0, 0, -128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 0, 0, -128, 64
SIMD.Float32x4.fromUint8x16Bits(t
// Float32x4[1.0, 2.0, 3.0, 4.0]

SIMD.Int32x4.fromUint8x16Bits

var t = SIMD.Uint8x16(1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0
SIMD.Int32x4.fromUint8x16Bits(t
// Int32x4[1, 2, 3, 4]

SIMD.Int16x8.fromUint8x16Bits

var t = SIMD.Uint8x16(1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0
SIMD.Int16x8.fromUint8x16Bits(t
// Int16x8[1, 2, 3, 4, 5, 6, 7, 8]

规范

Specification	Status	Comment
SIMDThe definition of 'SIMDConstructor.fromTIMDBits' in that specification.	Draft	Initial definition.

浏览器兼容性

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