1  true()
 2  false()
 3  number("1.5")
 4  number('abc')
 5  -number('abc')
 6  floor(0.1)
 7  floor(-0.1)
 8  floor(-0)
 9  floor(0)
10  floor(5.2)
11  floor(-5.2)
12  ceiling(0.1)
13  ceiling(-0.1)
14  ceiling(-0)
15  ceiling(0)
16  ceiling(5.2)
17  ceiling(-5.2)
18  round(0.1)
19  round(5.2)
20  round(5.5)
21  round(5.6)
22  round(-0.1)
23  round(-5.2)
24  round(-5.5)
25  round(-5.6)