Store

The store instructions, are used to store a number in memory.

For the integer numbers, you can also store a wide typed number as a narrower number in memory, e.g. store a 32-bit number in a 8-bit slot (i32.store8). If the number doesn't fit in the narrower number type it will wrap.

Try it

Syntax

;; the offset in memory where to store the number
i32.const 0

;; the number to store
i32.const 20

;; store 20 at position 0
i32.store
Instruction Binary opcode
i32.store 0x36
i64.store 0x37
f32.store 0x38
f64.store 0x39
i32.store8 0x3a
i32.store16 0x3b
i64.store8 0x3c
i64.store16 0x3d
i64.store32 0x3e