///////////////////////////////////////////////////////// STATIC FUNCTION
| 17 | // STATIC FUNCTION |
| 18 | // |
| 19 | uint32_t adler32(uint8_t * array, uint16_t length, uint32_t s1, uint32_t s2) |
| 20 | { |
| 21 | uint32_t _s1 = s1; |
| 22 | uint32_t _s2 = s2; |
| 23 | for (uint16_t i = 0; i < length;) |
| 24 | { |
| 25 | // if _s2 is halfway it is time to do modulo |
| 26 | while ((i < length) && (_s2 < 2147483648ULL)) // MAGIC NR. |
| 27 | { |
| 28 | _s1 += array[i++]; |
| 29 | _s2 += _s1; |
| 30 | } |
| 31 | _s1 %= ADLER32_MOD_PRIME; |
| 32 | _s2 %= ADLER32_MOD_PRIME; |
| 33 | } |
| 34 | return (_s2 << 16) | _s1; |
| 35 | } |
| 36 | |
| 37 | |
| 38 | uint16_t adler16(uint8_t * array, uint16_t length, uint16_t s1, uint16_t s2) |