| 1 | |
| 2 | #include <stdbool.h> |
| 3 | #include <stdint.h> |
| 4 | |
| 5 | static inline |
| 6 | bool bt_safe_to_mul_int64(int64_t a, int64_t b) |
| 7 | { |
| 8 | if (a == 0 || b == 0) { |
| 9 | return true; |
| 10 | } |
| 11 | |
| 12 | return a < INT64_MAX / b; |
| 13 | } |
| 14 | |
| 15 | static inline |
| 16 | bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b) |
| 17 | { |
| 18 | if (a == 0 || b == 0) { |
| 19 | return true; |
| 20 | } |
| 21 | |
| 22 | return a < UINT64_MAX / b; |
| 23 | } |
| 24 | |
| 25 | static inline |
| 26 | bool bt_safe_to_add_int64(int64_t a, int64_t b) |
| 27 | { |
| 28 | return a <= INT64_MAX - b; |
| 29 | } |
| 30 | |
| 31 | static inline |
| 32 | bool bt_safe_to_add_uint64(uint64_t a, uint64_t b) |
| 33 | { |
| 34 | return a <= UINT64_MAX - b; |
| 35 | } |