888c6a4bca
Reviewers: dgleich, teon.banek, mferencevic Reviewed By: mferencevic Subscribers: dgleich, mferencevic, teon.banek, pullbot Differential Revision: https://phabricator.memgraph.io/D1462
38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
#pragma once
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#include <cstdint>
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#include <cstring>
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#include <type_traits>
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namespace utils {
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template <typename T>
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constexpr typename std::underlying_type<T>::type UnderlyingCast(T e) {
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return static_cast<typename std::underlying_type<T>::type>(e);
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}
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/**
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* uint to int conversion in C++ is a bit tricky. Take a look here
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* https://stackoverflow.com/questions/14623266/why-cant-i-reinterpret-cast-uint-to-int
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* for more details.
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*
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* @tparam TDest Returned datatype.
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* @tparam TSrc Input datatype.
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*
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* @return "copy casted" value.
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*/
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template <typename TDest, typename TSrc>
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TDest MemcpyCast(TSrc src) {
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TDest dest;
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static_assert(sizeof(dest) == sizeof(src),
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"MemcpyCast expects source and destination to be of same size");
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static_assert(std::is_arithmetic<TSrc>::value,
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"MemcpyCast expects source is an arithmetic type");
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static_assert(std::is_arithmetic<TDest>::value,
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"MemcypCast expects destination is an arithmetic type");
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std::memcpy(&dest, &src, sizeof(src));
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return dest;
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}
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} // namespace utils
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