1 /**
2 * @file cstl_public.c
3 * @copyright Copyright (c) Huawei Technologies Co., Ltd. 2021-2021. All rights reserved.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15
16 * @brief cstl_public 公共定义实现源码
17 * @details cstl模块公共定义源码
18 * @date 2021-05-14
19 * @version v0.1.0
20 * *******************************************************************************************
21 * @par 修改日志：
22 * <table>
23 * <tr><th>Date <th>Version <th>Author <th>Description
24 * </table>
25 * *******************************************************************************************
26 */
27
28 #include "cstl_public_inner.h"
29
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33
34 /**
35 * @ingroup cstl
36 */
IsMultiOverflow(size_t x,size_t y)37 __attribute__((visibility("default"))) bool IsMultiOverflow(size_t x, size_t y)
38 {
39 bool ret = false;
40
41 if ((x > 0) && (y > 0)) {
42 ret = ((SIZE_MAX / x) < y) ? true : false;
43 }
44
45 return ret;
46 }
47
48 /* 加法溢出判断 */
49 /**
50 * @ingroup cstl
51 */
IsAddOverflow(size_t x,size_t y)52 __attribute__((visibility("default"))) bool IsAddOverflow(size_t x, size_t y)
53 {
54 return ((x + y) < x);
55 }
56
57 /**
58 * @ingroup cstl
59 */
CstlIntCmpFunc(uintptr_t data1,uintptr_t data2)60 __attribute__((visibility("default"))) int32_t CstlIntCmpFunc(uintptr_t data1, uintptr_t data2)
61 {
62 int32_t ret;
63 uintptr_t key1Value = data1;
64 uintptr_t key2Value = data2;
65
66 if (key1Value > key2Value) {
67 ret = 1;
68 } else if (key1Value < key2Value) {
69 ret = -1;
70 } else {
71 ret = 0;
72 }
73
74 return ret;
75 }
76
77 #ifdef __cplusplus
78 }
79 #endif
80