(module  (func (export "rotate_right") (param $num i32) (param $by i32) (result i32)    ;; load the number to rotate and the by how many spots    local.get $num    local.get $by    ;; rotate and return the result    i32.rotr  ))

const url = "{%wasm-url%}";await WebAssembly.instantiateStreaming(fetch(url), { console }).then(  (result) => {    const rotate_right = result.instance.exports.rotate_right;    const res = rotate_right(0b00000000_00000000_00000000_00000111, 1);    console.log(numToBin(res));    // Expected output: "10000000_00000000_00000000_00000011"  },);function numToBin(num) {  return (num >>> 0)    .toString(2)    .padStart(32, "0")    .match(/.{1,8}/g)    .join("_");}

;; load two numbers onto the stacki32.const 7   ;; 00000000_00000000_00000000_00000111i32.const 1   ;; right rotate one spot;; perform a bitwise right-rotatei32.rotr;; the top item on the stack will now be 2147483651;; (10000000_00000000_00000000_00000011)

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This page was last modified on⁨Nov 23, 2025⁩ byMDN contributors.