| 31 | namespace bit_util { |
| 32 | |
| 33 | inline uint64_t SafeLoadUpTo8Bytes(const uint8_t* bytes, int num_bytes) { |
| 34 | // This will not be correct on big-endian architectures. |
| 35 | #if !ARROW_LITTLE_ENDIAN |
| 36 | ARROW_DCHECK(false); |
| 37 | #endif |
| 38 | ARROW_DCHECK(num_bytes >= 0 && num_bytes <= 8); |
| 39 | if (num_bytes == 8) { |
| 40 | return util::SafeLoad(reinterpret_cast<const uint64_t*>(bytes)); |
| 41 | } else { |
| 42 | uint64_t word = 0; |
| 43 | for (int i = 0; i < num_bytes; ++i) { |
| 44 | word |= static_cast<uint64_t>(bytes[i]) << (8 * i); |
| 45 | } |
| 46 | return word; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | inline void SafeStoreUpTo8Bytes(uint8_t* bytes, int num_bytes, uint64_t value) { |
| 51 | // This will not be correct on big-endian architectures. |
no test coverage detected