compiler: RETURNS_NONNULL macro
[ccan] / ccan / endian / test / run.c
1 #include <ccan/endian/endian.h>
2 #include <stdlib.h>
3 #include <stddef.h>
4 #include <ccan/tap/tap.h>
5
6 int main(void)
7 {
8         union {
9                 uint64_t u64;
10                 unsigned char u64_bytes[8];
11         } u64;
12         union {
13                 uint32_t u32;
14                 unsigned char u32_bytes[4];
15         } u32;
16         union {
17                 uint16_t u16;
18                 unsigned char u16_bytes[2];
19         } u16;
20
21         plan_tests(48);
22
23         /* Straight swap tests. */
24         u64.u64_bytes[0] = 0x00;
25         u64.u64_bytes[1] = 0x11;
26         u64.u64_bytes[2] = 0x22;
27         u64.u64_bytes[3] = 0x33;
28         u64.u64_bytes[4] = 0x44;
29         u64.u64_bytes[5] = 0x55;
30         u64.u64_bytes[6] = 0x66;
31         u64.u64_bytes[7] = 0x77;
32         u64.u64 = bswap_64(u64.u64);
33         ok1(u64.u64_bytes[7] == 0x00);
34         ok1(u64.u64_bytes[6] == 0x11);
35         ok1(u64.u64_bytes[5] == 0x22);
36         ok1(u64.u64_bytes[4] == 0x33);
37         ok1(u64.u64_bytes[3] == 0x44);
38         ok1(u64.u64_bytes[2] == 0x55);
39         ok1(u64.u64_bytes[1] == 0x66);
40         ok1(u64.u64_bytes[0] == 0x77);
41
42         u32.u32_bytes[0] = 0x00;
43         u32.u32_bytes[1] = 0x11;
44         u32.u32_bytes[2] = 0x22;
45         u32.u32_bytes[3] = 0x33;
46         u32.u32 = bswap_32(u32.u32);
47         ok1(u32.u32_bytes[3] == 0x00);
48         ok1(u32.u32_bytes[2] == 0x11);
49         ok1(u32.u32_bytes[1] == 0x22);
50         ok1(u32.u32_bytes[0] == 0x33);
51
52         u16.u16_bytes[0] = 0x00;
53         u16.u16_bytes[1] = 0x11;
54         u16.u16 = bswap_16(u16.u16);
55         ok1(u16.u16_bytes[1] == 0x00);
56         ok1(u16.u16_bytes[0] == 0x11);
57
58         /* Endian tests. */
59         u64.u64 = cpu_to_le64(0x0011223344556677ULL);
60         ok1(u64.u64_bytes[0] == 0x77);
61         ok1(u64.u64_bytes[1] == 0x66);
62         ok1(u64.u64_bytes[2] == 0x55);
63         ok1(u64.u64_bytes[3] == 0x44);
64         ok1(u64.u64_bytes[4] == 0x33);
65         ok1(u64.u64_bytes[5] == 0x22);
66         ok1(u64.u64_bytes[6] == 0x11);
67         ok1(u64.u64_bytes[7] == 0x00);
68         ok1(le64_to_cpu(u64.u64) == 0x0011223344556677ULL);
69
70         u64.u64 = cpu_to_be64(0x0011223344556677ULL);
71         ok1(u64.u64_bytes[7] == 0x77);
72         ok1(u64.u64_bytes[6] == 0x66);
73         ok1(u64.u64_bytes[5] == 0x55);
74         ok1(u64.u64_bytes[4] == 0x44);
75         ok1(u64.u64_bytes[3] == 0x33);
76         ok1(u64.u64_bytes[2] == 0x22);
77         ok1(u64.u64_bytes[1] == 0x11);
78         ok1(u64.u64_bytes[0] == 0x00);
79         ok1(be64_to_cpu(u64.u64) == 0x0011223344556677ULL);
80
81         u32.u32 = cpu_to_le32(0x00112233);
82         ok1(u32.u32_bytes[0] == 0x33);
83         ok1(u32.u32_bytes[1] == 0x22);
84         ok1(u32.u32_bytes[2] == 0x11);
85         ok1(u32.u32_bytes[3] == 0x00);
86         ok1(le32_to_cpu(u32.u32) == 0x00112233);
87
88         u32.u32 = cpu_to_be32(0x00112233);
89         ok1(u32.u32_bytes[3] == 0x33);
90         ok1(u32.u32_bytes[2] == 0x22);
91         ok1(u32.u32_bytes[1] == 0x11);
92         ok1(u32.u32_bytes[0] == 0x00);
93         ok1(be32_to_cpu(u32.u32) == 0x00112233);
94
95         u16.u16 = cpu_to_le16(0x0011);
96         ok1(u16.u16_bytes[0] == 0x11);
97         ok1(u16.u16_bytes[1] == 0x00);
98         ok1(le16_to_cpu(u16.u16) == 0x0011);
99
100         u16.u16 = cpu_to_be16(0x0011);
101         ok1(u16.u16_bytes[1] == 0x11);
102         ok1(u16.u16_bytes[0] == 0x00);
103         ok1(be16_to_cpu(u16.u16) == 0x0011);
104
105         exit(exit_status());
106 }