1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
fn ret() -> i64 {
1
}
fn neg() -> i64 {
-1
}
fn add() -> i64 {
1 + 2
}
fn indirect_add() -> i64 {
let x = 1;
let y = 2;
x + y
}
fn arith() -> i32 {
3 * 3 + 4 * 4
}
fn match_int() -> i16 {
let n = 2;
match n {
0 => 0,
1 => 10,
2 => 20,
3 => 30,
_ => 100,
}
}
fn match_int_range() -> i64 {
let n = 42;
match n {
0..=9 => 0,
10..=19 => 1,
20..=29 => 2,
30..=39 => 3,
40..=42 => 4,
_ => 5,
}
}
fn main() {
assert_eq!(ret(), 1);
assert_eq!(neg(), -1);
assert_eq!(add(), 3);
assert_eq!(indirect_add(), 3);
assert_eq!(arith(), 5 * 5);
assert_eq!(match_int(), 20);
assert_eq!(match_int_range(), 4);
assert_eq!(i64::MIN.overflowing_mul(-1), (i64::MIN, true));
assert_eq!(i32::MIN.overflowing_mul(-1), (i32::MIN, true));
assert_eq!(i16::MIN.overflowing_mul(-1), (i16::MIN, true));
assert_eq!(i8::MIN.overflowing_mul(-1), (i8::MIN, true));
}
|
