projects / babeltrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 0235b0db MJ |
1 | /* |
| 2 | * SPDX-License-Identifier: MIT | |
| 3 | * | |
| 4 | * Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 5 | */ | |
| 91d81473 | 6 | |
| ae2be88d SM |
7 | #ifndef BABELTRACE_COMMON_SAFE_H |
| 8 | #define BABELTRACE_COMMON_SAFE_H | |
| 9 | ||
| 91d81473 MJ |
10 | #include <stdbool.h> |
| 11 | #include <stdint.h> | |
| 12 | ||
| 97ebbaa0 PP |
13 | #ifdef __cplusplus |
| 14 | extern "C" { | |
| 15 | #endif | |
| 16 | ||
| 91d81473 MJ |
17 | static inline |
| 18 | bool bt_safe_to_mul_int64(int64_t a, int64_t b) | |
| 19 | { | |
| 20 | if (a == 0 || b == 0) { | |
| 21 | return true; | |
| 22 | } | |
| 23 | ||
| 24 | return a < INT64_MAX / b; | |
| 25 | } | |
| 26 | ||
| 27 | static inline | |
| 28 | bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b) | |
| 29 | { | |
| 30 | if (a == 0 || b == 0) { | |
| 31 | return true; | |
| 32 | } | |
| 33 | ||
| 34 | return a < UINT64_MAX / b; | |
| 35 | } | |
| 36 | ||
| 37 | static inline | |
| 38 | bool bt_safe_to_add_int64(int64_t a, int64_t b) | |
| 39 | { | |
| 40 | return a <= INT64_MAX - b; | |
| 41 | } | |
| 42 | ||
| 43 | static inline | |
| 44 | bool bt_safe_to_add_uint64(uint64_t a, uint64_t b) | |
| 45 | { | |
| 46 | return a <= UINT64_MAX - b; | |
| 47 | } | |
| 97ebbaa0 PP |
48 | |
| 49 | #ifdef __cplusplus | |
| 50 | } | |
| 51 | #endif | |
| ae2be88d SM |
52 | |
| 53 | #endif /* BABELTRACE_COMMON_SAFE_H */ |