| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| // for details. All rights reserved. Use of this source code is governed by a | |
| // BSD-style license that can be found in the LICENSE file. | |
| #ifndef PLATFORM_UTILS_LINUX_H_ | |
| #define PLATFORM_UTILS_LINUX_H_ | |
| namespace dart { | |
| inline int Utils::CountTrailingZeros(uword x) { | |
| #if defined(ARCH_IS_32_BIT) | |
| return __builtin_ctzl(x); | |
| #elif defined(ARCH_IS_64_BIT) | |
| return __builtin_ctzll(x); | |
| #else | |
| #error Architecture is not 32-bit or 64-bit. | |
| #endif | |
| }; | |
| } // namespace dart | |
| #endif // PLATFORM_UTILS_LINUX_H_ |