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SIMD.%type%.neg()

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.

The static SIMD.%type%.mul() method returns a new instance with the lane values negated.

Syntax

SIMD.Float32x4.neg(t)
SIMD.Float64x2.neg(t)

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

SIMD.Uint8x16.neg(t) 
SIMD.Uint16x8.neg(t)
SIMD.Uint32x4.neg(t)

Parameters

t
An instance of a corresponding SIMD type.

Return value

A new corresponding SIMD data type with the lane values negated.

Examples

This example negates a Float32x4, Float64x2 and a Int32x4 SIMD data type. Note the signed zero (-0) in the case where a zero (0) is negated in a float data type.

var a = SIMD.Float32x4(-1, -2, 3, 0);
SIMD.Float32x4.neg(a);
// Float32x4[1, 2, -3, -0]

var b = SIMD.Float64x2(NaN, Infinity);
SIMD.Float64x2.neg(b);
// Float64x2[NaN, -Infinity]

var c = SIMD.Int32x4(-1, -2, 3, 0);
SIMD.Int32x4.neg(c);
// Float32x4[1, 2, -3, 0]

Specifications

Specification Status Comment
SIMD
The definition of 'SIMDConstructor.neg' in that specification.
Obsolete Initial definition.

Browser compatibility

Experimental SIMD.js has been removed from browsers. It's still available in Firefox Nightly, but will be removed in favor of a SIMD implementation in WebAssembly. See also bug 1416723.

See also

Document Tags and Contributors

Contributors to this page: fscholz
Last updated by: fscholz,