function mod()
{
var mods = [-1,-1,-1,-1];
var a = 9.5, b = -5, c = 42, d = (1/0);
for (var i = 0; i < 20; i++) {
mods[0] = a % b;
mods[1] = b % 1;
mods[2] = c % d;
mods[3] = c % a;
mods[4] = b % 0;
}
return mods.toString();
}
assertEq(mod(), "4.5,0,42,4,NaN");