src/opt/bsearch/lib.hpp
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #pragma once | ||
| 2 | |||
| 3 | #include "../../util/alias/num/lib.hpp" | ||
| 4 | |||
| 5 | namespace tifa_libs { | ||
| 6 | |||
| 7 | template <class F> | ||
| 8 | requires requires(F pred, u32 x) { | ||
| 9 | { pred(x) } -> std::same_as<bool>; | ||
| 10 | } | ||
| 11 | 36732636 | CEXP u32 bsearch(F&& pred) NE { | |
| 12 | 36732636 | u32 ok = 0, ng = 1; | |
| 13 | 94180551 | while (pred(ng)) ng *= 2; | |
| 14 | 94180551 | while (abs(i32(ok - ng)) > 1) { | |
| 15 | 57447915 | cu32 mid = ok + (ng - ok) / 2; | |
| 16 | 57447915 | (pred(mid) ? ok : ng) = mid; | |
| 17 | } | ||
| 18 | 36732636 | return ok; | |
| 19 | } | ||
| 20 | |||
| 21 | } // namespace tifa_libs | ||
| 22 |