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31 lines
897 B
C++
31 lines
897 B
C++
#pragma once
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#include <string.h>
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#include <algorithm>
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#include <type_traits>
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namespace ext
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{
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/** \brief Returns value `from` converted to type `To` while retaining bit representation.
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* `To` and `From` must satisfy `CopyConstructible`.
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*/
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template <typename To, typename From>
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std::decay_t<To> bit_cast(const From & from)
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{
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To res {};
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memcpy(static_cast<void*>(&res), &from, std::min(sizeof(res), sizeof(from)));
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return res;
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}
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/** \brief Returns value `from` converted to type `To` while retaining bit representation.
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* `To` and `From` must satisfy `CopyConstructible`.
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*/
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template <typename To, typename From>
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std::decay_t<To> safe_bit_cast(const From & from)
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{
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static_assert(sizeof(To) == sizeof(From), "bit cast on types of different width");
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return bit_cast<To, From>(from);
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}
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}
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