MySQL 8.0.30
Source Code Documentation
my_pointer_arithmetic.h
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1#ifndef MY_POINTER_ARITHMETIC_INCLUDED
2#define MY_POINTER_ARITHMETIC_INCLUDED
3/*
4 Copyright (c) 2016, 2022, Oracle and/or its affiliates.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License, version 2.0,
8 as published by the Free Software Foundation.
9
10 This program is also distributed with certain software (including
11 but not limited to OpenSSL) that is licensed under separate terms,
12 as designated in a particular file or component or in included license
13 documentation. The authors of MySQL hereby grant you an additional
14 permission to link the program and your derivative works with the
15 separately licensed software that they have included with MySQL.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License, version 2.0, for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
25
26#include <stdint.h>
27
28/**
29 @file include/my_pointer_arithmetic.h
30 Some macros for dealing with pointer arithmetic, e.g., aligning
31 of buffers to a given size.
32*/
33
34#define MY_ALIGN(A, L) (((A) + (L)-1) & ~((L)-1))
35#define ALIGN_SIZE(A) MY_ALIGN((A), sizeof(double))
36
37#ifdef __cplusplus
38
39template <typename T>
40bool is_aligned_to(T *t, int increment) {
41 return reinterpret_cast<uintptr_t>(t) % increment == 0;
42}
43
44template <typename T>
45bool is_aligned(T *t) {
46 return is_aligned_to(t, alignof(T));
47}
48
49#endif // __cplusplus
50
51#endif // MY_POINTER_ARITHMETIC_INCLUDED
bool is_aligned(T *t)
Definition: my_pointer_arithmetic.h:45
bool is_aligned_to(T *t, int increment)
Definition: my_pointer_arithmetic.h:40