presto-main/src/main/java/io/prestosql/type/TinyintOperators.java/TinyintOperators/castToReal
class TinyintOperators:    @ScalarOperator(CAST)
    @SqlType(StandardTypes.REAL)
    public static long castToReal(@SqlType(StandardTypes.TINYINT) long value)
    {
        return (long) floatToRawIntBits((float) value);
    }