var i = 1.0;
var j = 2.0;
var k = 3.0;

assert_equal(3, i + j)
assert_equal(1.0, +i)
assert_equalassert_equal(-1, -i)
assert_equal(1.5, k/j)
assert_equal(6, j*k)

as
assert_throws("No modulus for float", fun() { k % 2 } );
