Created
March 22, 2013 05:40
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bittest.cpp
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| #include <iostream> | |
| #include <cstdint> | |
| #include <cstring> | |
| int main() | |
| { | |
| uint64_t hi; | |
| uint64_t lo; | |
| if(hi & 0x8000000000000000ULL) | |
| hi = ~hi; | |
| int off = ffsll(hi); | |
| hi <<= off; | |
| hi = ~hi; | |
| int pattern = ffsll(hi); | |
| return 0; | |
| } |
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