source:
Deliverables/D4.1/GCC/FastRoundup.c
@
297
| Last change on this file since 297 was 169, checked in by , 11 years ago | |
|---|---|
| File size: 269 bytes | |
| Line | |
|---|---|
| 1 | /* For 16 bit unsigned integers. */ |
| 2 | unsigned int round_up(unsigned int v) |
| 3 | { |
| 4 | v--; |
| 5 | v |= v >> 1; |
| 6 | v |= v >> 2; |
| 7 | v |= v >> 4; |
| 8 | v |= v >> 8; |
| 9 | v++; |
| 10 | return v; |
| 11 | } |
| 12 | |
| 13 | int main() |
| 14 | { |
| 15 | unsigned int f; |
| 16 | f = round_up(125); |
| 17 | if(f == 128) |
| 18 | return 5; |
| 19 | else |
| 20 | return 7; |
| 21 | } |
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