| 1 | //===-- Implementation of stdc_trailing_ones_ull --------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "src/stdbit/stdc_trailing_ones_ull.h" |
| 10 | |
| 11 | #include "src/__support/CPP/bit.h" |
| 12 | #include "src/__support/common.h" |
| 13 | |
| 14 | namespace LIBC_NAMESPACE { |
| 15 | |
| 16 | LLVM_LIBC_FUNCTION(unsigned, stdc_trailing_ones_ull, |
| 17 | (unsigned long long value)) { |
| 18 | return static_cast<unsigned>(cpp::countr_one(value)); |
| 19 | } |
| 20 | |
| 21 | } // namespace LIBC_NAMESPACE |
| 22 |