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Merge "Fix BIONIC_ROUND_UP_POWER_OF_2 for 64 bit."

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Christopher Ferris 2014-07-15 20:19:33 +00:00 committed by Gerrit Code Review
commit 51c914b7fd
1 changed files with 3 additions and 1 deletions
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4
libc/private/bionic_macros.h
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@ -37,6 +37,8 @@
(((value) + (alignment) - 1) & ~((alignment) - 1))
#define BIONIC_ROUND_UP_POWER_OF_2(value) \
(1UL << (sizeof(value) * 8 - 1 - __builtin_clz(value)))
(sizeof(value) == 8) \
? (1UL << (64 - __builtin_clzl(static_cast<unsigned long>(value)))) \
: (1UL << (32 - __builtin_clz(static_cast<unsigned int>(value))))
#endif // _BIONIC_MACROS_H_