1 // Copyright 2017 The CRC32C Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. See the AUTHORS file for names of contributors.
4
5 #include "crc32c/crc32c.h"
6
7 #include <stddef.h>
8 #include <stdint.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12
main()13 int main() {
14 /* From rfc3720 section B.4. */
15 uint8_t buf[32];
16
17 memset(buf, 0, sizeof(buf));
18 if ((uint32_t)0x8a9136aa != crc32c_value(buf, sizeof(buf))) {
19 printf("crc32c_value(zeros) test failed\n");
20 return 1;
21 }
22
23 memset(buf, 0xff, sizeof(buf));
24 if ((uint32_t)0x62a8ab43 != crc32c_value(buf, sizeof(buf))) {
25 printf("crc32c_value(0xff) test failed\n");
26 return 1;
27 }
28
29 for (size_t i = 0; i < 32; ++i)
30 buf[i] = (uint8_t)i;
31 if ((uint32_t)0x46dd794e != crc32c_value(buf, sizeof(buf))) {
32 printf("crc32c_value(0..31) test failed\n");
33 return 1;
34 }
35
36 for (size_t i = 0; i < 32; ++i)
37 buf[i] = (uint8_t)(31 - i);
38 if ((uint32_t)0x113fdb5c != crc32c_value(buf, sizeof(buf))) {
39 printf("crc32c_value(31..0) test failed\n");
40 return 1;
41 }
42
43 uint8_t data[48] = {
44 0x01, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
45 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
46 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x18, 0x28, 0x00, 0x00, 0x00,
47 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
48 };
49 if ((uint32_t)0xd9963a56 != crc32c_value(data, sizeof(data))) {
50 printf("crc32c_value(31..0) test failed\n");
51 return 1;
52 }
53
54 const uint8_t* hello_space_world = (const uint8_t*)"hello world";
55 const uint8_t* hello_space = (const uint8_t*)"hello ";
56 const uint8_t* world = (const uint8_t*)"world";
57
58 if (crc32c_value(hello_space_world, 11) !=
59 crc32c_extend(crc32c_value(hello_space, 6), world, 5)) {
60 printf("crc32c_extend test failed\n");
61 return 1;
62 }
63
64 printf("All tests passed\n");
65 return 0;
66 }
67