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| 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "src/base/bits.h" |
| 6 #include "src/base/logging.h" |
| 7 |
| 8 namespace v8 { |
| 9 namespace base { |
| 10 namespace bits { |
| 11 |
| 12 uint32_t RoundUpToPowerOfTwo32(uint32_t value) { |
| 13 DCHECK_LE(value, 0x80000000u); |
| 14 value = value - 1; |
| 15 value = value | (value >> 1); |
| 16 value = value | (value >> 2); |
| 17 value = value | (value >> 4); |
| 18 value = value | (value >> 8); |
| 19 value = value | (value >> 16); |
| 20 return value + 1; |
| 21 } |
| 22 |
| 23 } // namespace bits |
| 24 } // namespace base |
| 25 } // namespace v8 |
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