| 676 | static int_fast64_t |
| 677 | detzcode64(const char *const codep) |
| 678 | { |
| 679 | register int_fast64_t result; |
| 680 | register int i; |
| 681 | int_fast64_t one = 1; |
| 682 | int_fast64_t halfmaxval = one << (64 - 2); |
| 683 | int_fast64_t maxval = halfmaxval - 1 + halfmaxval; |
| 684 | int_fast64_t minval = -TWOS_COMPLEMENT(int_fast64_t) - maxval; |
| 685 | |
| 686 | result = codep[0] & 0x7f; |
| 687 | for (i = 1; i < 8; ++i) |
| 688 | result = (result << 8) | (codep[i] & 0xff); |
| 689 | |
| 690 | if (codep[0] & 0x80) { |
| 691 | /* Do two's-complement negation even on non-two's-complement machines. |
| 692 | If the result would be minval - 1, return minval. */ |
| 693 | result -= !TWOS_COMPLEMENT(int_fast64_t) && result != 0; |
| 694 | result += minval; |
| 695 | } |
| 696 | return result; |
| 697 | } |
| 698 | |
| 699 | #if !USE_TIMEX_T || !defined TM_GMTOFF |
| 700 | |
| 701 | static void |
| 702 | update_tzname_etc(struct state const *sp, struct ttinfo const *ttisp) |