1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <stdio.h>
17 #include <stdlib.h>
18 #include "test.h"
19
20 /**
21 * @tc.name : srand_0100
22 * @tc.desc : Test the srand function to set the random number seed
23 * @tc.level : Level 0
24 */
srand_0100(void)25 void srand_0100(void)
26 {
27 int a[10] = {0};
28 int b[10] = {0};
29 srand(10);
30 for (int i = 0; i < 10; i++) {
31 a[i] = rand();
32 }
33 srand(10);
34 for (int i = 0; i < 10; i++) {
35 b[i] = rand();
36 }
37 for (int i = 0; i < 10; i++) {
38 if (a[i] != b[i]) {
39 t_error("%s srand rand in %d is %d , %d \n", __func__, i, a[i], b[i]);
40 }
41 }
42 }
43
44 /**
45 * @tc.name : srand_0200
46 * @tc.desc : Change the random number seed
47 * @tc.level : Level 1
48 */
srand_0200(void)49 void srand_0200(void)
50 {
51 int a = 0;
52 int b = 0;
53 srand(10);
54 a = rand();
55 srand(500);
56 b = rand();
57 if (a == b) {
58 t_error("%s srand get rand is %d , %d \n", __func__, a, b);
59 }
60 }
61
main(int argc,char * argv[])62 int main(int argc, char *argv[])
63 {
64 srand_0100();
65 srand_0200();
66 return t_status;
67 }