f64.store
f64.store writes bytes into linear memory.
core0x39
Syntax
f64.store
Stack Effect
[address i32, value] -> []Opcode
- Hex
0x39- Decimal
57- Bytes
[0x39]- Encoding
0x39 <memarg:memarg>- Immediates
memarg:memarg— alignment hint and offset (two u32 LEB128 values)
- Category
- memory
Browser Support
Core WebAssembly instruction.
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.
(func $example
;; f64.store example
)