mirror of
https://github.com/RetroDECK/Supermodel.git
synced 2024-11-24 22:55:40 +00:00
32 lines
1,002 B
C++
32 lines
1,002 B
C++
#ifndef INCLUDED_UTIL_BITCAST_H
|
|
#define INCLUDED_UTIL_BITCAST_H
|
|
|
|
#include <stdexcept>
|
|
#include <cstring>
|
|
|
|
namespace Util
|
|
{
|
|
#if __cplusplus >= 202002L
|
|
#include <bit>
|
|
#define FloatAsInt32(x) std::bit_cast<int32_t>(x)
|
|
#define Int32AsFloat(x) std::bit_cast<float>(x)
|
|
#define Uint32AsFloat(x) std::bit_cast<float>(x)
|
|
#else
|
|
template <class Dest, class Source>
|
|
inline Dest bit_cast(Source const& source) {
|
|
static_assert(sizeof(Dest) == sizeof(Source), "size of destination and source objects must be equal");
|
|
static_assert(std::is_trivially_copyable<Dest>::value, "destination type must be trivially copyable.");
|
|
static_assert(std::is_trivially_copyable<Source>::value, "source type must be trivially copyable");
|
|
|
|
Dest dest;
|
|
std::memcpy(&dest, &source, sizeof(dest));
|
|
return dest;
|
|
}
|
|
#define FloatAsInt32(x) bit_cast<int32_t,float>(x)
|
|
#define Int32AsFloat(x) bit_cast<float,int32_t>(x)
|
|
#define Uint32AsFloat(x) bit_cast<float,uint32_t>(x)
|
|
#endif
|
|
} // Util
|
|
|
|
#endif // INCLUDED_UTIL_BITCAST_H
|