1## args: double
2## ret: double
3## includes: math.h
40.0
5-0.0
60.001
7-0.001
80.5
9-0.5
100.999
11-0.999
121.0
13-1.0
141.001
15-1.001
16123.5
17-123.5
1812345.1
19-1000000.1
201e15
21-1e30
221e200
23