General Utility Library for C++14
2.11

bit_set(): Set a bit in an integral value.
bit_reset(): Clear a bit in an integral value.
bit_flip(): Flip a bit in an integral value.
bit_test(): Test a bit in an integral value.
endian: An enum to determine the endianness of multibyte scalars on the current platform, behaving like std::endian from C++20.
is_big_endian(): Determine if the current platform uses bigendian byte order.
is_little_endian(): Determine if the current platform uses littleendian byte order.