How do I convert between big-endian and little-endian values in C++?

Question

How do I convert between big-endian and little-endian values in C++?

EDIT: For clarity, I have to translate binary data (double-precision floating point values and 3

Answer 1

If you have C++ 17 then add this header

#include 

Use this template function to swap the bytes:

template 
void swapEndian(T& buffer)
{
    static_assert(std::is_pod::value, "swapEndian support POD type only");
    char* startIndex = static_cast((void*)buffer.data());
    char* endIndex = startIndex + sizeof(buffer);
    std::reverse(startIndex, endIndex);
}

call it like:

swapEndian (stlContainer);