fib

gistfile1.txt

$ time node fib.asm.js
102334155
node fib.asm.js  0.00s user 0.01s system 0% cpu 1.723 total

$ time node fib.js
102334155
node fib.js  0.00s user 0.01s system 0% cpu 2.025 total

$ cat fib.asm.js
function Module() {
    'use asm';
    function fib(n) {
        n = n | 0;
        var a = 0, b = 0, r = 0;
        if ((n | 0) <= 1) {
            return n | 0;
        }
        a = n - 1 | 0;
        b = n - 2 | 0;
        r = (fib(a) | 0) + (fib(b) | 0) | 0;
        return r | 0;
    }
    function main() {
        return fib(40) | 0;
    }
    return {
        fib: fib,
        main: main
    };
}

var module = Module();

console.log(module.main());


$ cat fib.js
function fib(n){
  if(n <= 1) {
    return n;
  }
  return fib(n - 1) + fib(n - 2);
}

console.log(fib(40));

$