R"********(
#ifndef __HAVE_BUILTIN_BSWAP16__
#define __HAVE_BUILTIN_BSWAP16__
#endif
#ifndef __HAVE_BUILTIN_BSWAP32__
#define __HAVE_BUILTIN_BSWAP32__
#endif
#ifndef __HAVE_BUILTIN_BSWAP64__
#define __HAVE_BUILTIN_BSWAP64__
#endif
)********"