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0235b0db MJ |
1 | /* |
2 | * SPDX-License-Identifier: MIT | |
3 | * | |
4 | * Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
5 | */ | |
91d81473 MJ |
6 | |
7 | #include <stdbool.h> | |
8 | #include <stdint.h> | |
9 | ||
97ebbaa0 PP |
10 | #ifdef __cplusplus |
11 | extern "C" { | |
12 | #endif | |
13 | ||
91d81473 MJ |
14 | static inline |
15 | bool bt_safe_to_mul_int64(int64_t a, int64_t b) | |
16 | { | |
17 | if (a == 0 || b == 0) { | |
18 | return true; | |
19 | } | |
20 | ||
21 | return a < INT64_MAX / b; | |
22 | } | |
23 | ||
24 | static inline | |
25 | bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b) | |
26 | { | |
27 | if (a == 0 || b == 0) { | |
28 | return true; | |
29 | } | |
30 | ||
31 | return a < UINT64_MAX / b; | |
32 | } | |
33 | ||
34 | static inline | |
35 | bool bt_safe_to_add_int64(int64_t a, int64_t b) | |
36 | { | |
37 | return a <= INT64_MAX - b; | |
38 | } | |
39 | ||
40 | static inline | |
41 | bool bt_safe_to_add_uint64(uint64_t a, uint64_t b) | |
42 | { | |
43 | return a <= UINT64_MAX - b; | |
44 | } | |
97ebbaa0 PP |
45 | |
46 | #ifdef __cplusplus | |
47 | } | |
48 | #endif |