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/*
* libpinyin
* Library to deal with pinyin.
*
* Copyright (C) 2022 Matias Larsson
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef UNALIGNED_MEMORY_H
#define UNALIGNED_MEMORY_H
#include <cstring>
/**
* UnalignedMemory: Safe unaligned memory access.
*
* Some instruction sets, or some instructions in some instruction sets
* require that memory access is aligned to a specific boundary. These
* instructions may trap on unaligned access.
*
* This class provides methods to load and store values at unaligned
* addresses. It ensures that the compiler doesn't generate instructions
* that could trap on the unaligned memory access.
*/
namespace pinyin{
template <typename T>
class UnalignedMemory{
public:
/**
* Read a value from a possibly unaligned memory address.
*/
static T load(const void * src) {
T value;
memcpy(&value, src, sizeof(T));
return value;
}
/**
* Store a value into a possibly unaligned memory address.
*/
static void store(T value, void * dest) {
memcpy(dest, &value, sizeof(T));
}
};
};
#endif
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