calc_trainer_id_by_seed.js

function calc_trainer_id_by_seed(seed) {
	var mt0 = seed >>> 0;
	var mt1 = mul(1812433253, mt0 ^ (mt0 >>> 30)) + 1;
	var mt2 = mul(1812433253, mt1 ^ (mt1 >>> 30)) + 2;
	var mt_last = mt2;
	for (var i = 3; i <= 398; i++) {
		mt_last = mul(1812433253, mt_last ^ (mt_last >>> 30)) + i;
	}
	var value;
	value = (mt1 & 0x80000000) | (mt2 & 0x7fffffff);
	value = mt_last ^ (value >>> 1) ^ ((value & 1) ? 0x9908b0df : 0);
	value ^=  value >>> 11;
	value ^= (value <<   7) & 0x9d2c5680;
	value ^= (value <<  15) & 0xefc60000;
	value ^=  value >>> 18;
	return value >>> 0;
}

function mul(a, b) {
	var a1 = a >>> 16, a2 = a & 0xffff;
	var b1 = b >>> 16, b2 = b & 0xffff;
	return (((a1 * b2 + a2 * b1) << 16) + a2 * b2) >>> 0;
}