SELECT hex(1.0);
SELECT hex(101.);
SELECT hex(1e+18);
SELECT hex(1e-20);
SELECT hex(1e+100);
SELECT hex(0.000578);
SELECT hex(-123.978);
SELECT hex(toFloat32(99.67));
SELECT hex(toFloat32(number)) FROM numbers(200, 2);
SELECT hex(toFloat64(number)) FROM numbers(202, 2);