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Add constexpr annotation to align_up/down.

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This commit is contained in:
Matthew Parkinson
2020-09-11 13:28:26 +01:00
committed by Matthew Parkinson
parent 17d5a3ed20
commit d3ecd66f73
1 changed files with 5 additions and 4 deletions
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9
src/ds/bits.h
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@@ -241,18 +241,19 @@ namespace snmalloc
return BITS - clz_const(x - 1);
}
static SNMALLOC_FAST_PATH size_t align_down(size_t value, size_t alignment)
constexpr SNMALLOC_FAST_PATH size_t
align_down(size_t value, size_t alignment)
{
SNMALLOC_ASSERT(next_pow2(alignment) == alignment);
SNMALLOC_ASSERT(next_pow2_const(alignment) == alignment);
size_t align_1 = alignment - 1;
value &= ~align_1;
return value;
}
static inline size_t align_up(size_t value, size_t alignment)
constexpr SNMALLOC_FAST_PATH size_t align_up(size_t value, size_t alignment)
{
SNMALLOC_ASSERT(next_pow2(alignment) == alignment);
SNMALLOC_ASSERT(next_pow2_const(alignment) == alignment);
size_t align_1 = alignment - 1;
value += align_1;