Endian

pulled from lovely comments on stackoverflow All references to original source are in endian.hpp

Header-only library (endian.hpp) to handle conversion between big and little-endian format.

Usage

You can just copy the endian.hpp file to your project, or if using with CPM.cmake, add this in CMakeLists.txt:

CPMAddPackage("gh:adi-g15/endian@1.0")

Converting to big-endian:

    int64_t j = endian::to_big_endian<int64_t>(i);

Converting to little-endian:

    int64_t j = endian::to_little_endian<int64_t>(i);

Checking endianness

Note regarding C++20: C++20 provides std::endian to check endian at compile time Just to remain C++11, this includes a runtime check of system endianness.

    bool is_big_endian = endian::IsBigEndian();

Swapping endianness

Maybe first check if you need to swap endianness at all:

    bool should_swap = IsBigEndian();
    /* ... */
    if (should_swap) {
        i = endian::swap_endian<int64_t>(i);
    }

Author: Erik Garrison

License: MIT