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Add IsAligned helper for values

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This commit is contained in:
Austin Eng
2017-08-17 14:02:16 -04:00
committed by Austin Eng
parent d37ec9af92
commit ae48c95306
4 changed files with 42 additions and 7 deletions
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10
src/common/Math.cpp
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@@ -49,7 +49,7 @@ bool IsPowerOfTwo(size_t n) {
return (n & (n - 1)) == 0;
}
bool IsAligned(const void* ptr, size_t alignment) {
bool IsPtrAligned(const void* ptr, size_t alignment) {
ASSERT(IsPowerOfTwo(alignment));
ASSERT(alignment != 0);
return (reinterpret_cast<size_t>(ptr) & (alignment - 1)) == 0;
@@ -61,6 +61,14 @@ void* AlignVoidPtr(void* ptr, size_t alignment) {
return reinterpret_cast<void*>((reinterpret_cast<size_t>(ptr) + (alignment - 1)) & ~(alignment - 1));
}
bool IsAligned(uint32_t value, size_t alignment) {
ASSERT(alignment <= UINT32_MAX);
ASSERT(IsPowerOfTwo(alignment));
ASSERT(alignment != 0);
uint32_t alignment32 = static_cast<uint32_t>(alignment);
return (value & (alignment32 - 1)) == 0;
}
uint32_t Align(uint32_t value, size_t alignment) {
ASSERT(alignment <= UINT32_MAX);
ASSERT(IsPowerOfTwo(alignment));