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(module (func (export "trailing0") (param $num i32) (result i32) ;; load number onto the stack local.get $num ;; check how many trailing zeros and return the result i32.ctz ) ) 

const url = "{%wasm-url%}"; await WebAssembly.instantiateStreaming(fetch(url), { console }).then( (result) => { const trailing0 = result.instance.exports.trailing0; console.log( `Trailing zeros: ${trailing0(0b00000000_10000000_00000000_00000000)}`, ); // Expected output: "Trailing zeros: 23" }, ); 

;; load a number onto the stack i32.const 8388608 ;; 00000000_10000000_00000000_00000000 ;; count trailing zeros i32.ctz ;; the top item on the stack will now be 23