blob: 6674b9369447bc7d7d155079180965a937319040 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#pragma once
#include "yassert.h"
#include "defaults.h"
#include <util/generic/bitops.h>
template <class T>
static inline T AlignDown(T len, T align) noexcept {
Y_ASSERT(IsPowerOf2(align)); // align should be power of 2
return len & ~(align - 1);
}
template <class T>
static inline T AlignUp(T len, T align) noexcept {
const T alignedResult = AlignDown(len + (align - 1), align);
Y_ASSERT(alignedResult >= len); // check for overflow
return alignedResult;
}
template <class T>
static inline T AlignUpSpace(T len, T align) noexcept {
Y_ASSERT(IsPowerOf2(align)); // align should be power of 2
return ((T)0 - len) & (align - 1); // AlignUp(len, align) - len;
}
template <class T>
static inline T* AlignUp(T* ptr, size_t align) noexcept {
return (T*)AlignUp((uintptr_t)ptr, align);
}
template <class T>
static inline T* AlignDown(T* ptr, size_t align) noexcept {
return (T*)AlignDown((uintptr_t)ptr, align);
}
template <class T>
static inline T AlignUp(T t) noexcept {
return AlignUp(t, (size_t)PLATFORM_DATA_ALIGN);
}
template <class T>
static inline T AlignDown(T t) noexcept {
return AlignDown(t, (size_t)PLATFORM_DATA_ALIGN);
}
template <class T>
static inline T Align(T t) noexcept {
return AlignUp(t);
}
|
