simd

f64x2.neg

f64x2.neg SIMD vector operation.

simd0xFD 0xED

Syntax

f64x2.neg

Stack Effect

SIMD lane operands -> SIMD result

Opcode

Hex: 0xFD 0xED
Decimal: 253 237
Bytes: [0xfd, 0xed]
Prefix: 0xFD SIMD extension space
Encoding: 0xFD 0xED
Category: simd
Proposal: simd

Browser Support

Feature-detect runtime support before executing examples.

Validation Rules

Operands and result types must match the instruction signature.
The instruction must appear in a valid structured control context.

Common Mistakes

Using the instruction with the wrong operand type.
Forgetting that WAT validation is stack-typed.

Example

(func $example
  ;; f64x2.neg example
)