rotr: Wasm-Textanweisung

(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 stack
i32.const 7 ;; 00000000_00000000_00000000_00000111
i32.const 1 ;; right rotate one spot
;; perform a bitwise right-rotate
i32.rotr
;; the top item on the stack will now be 2147483651
;; (10000000_00000000_00000000_00000011)

Help improve MDN