// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. // SPDX-License-Identifier: Apache-2.0 OR ISC // Builtin swap was added in GCC 4.8 https://gcc.gnu.org/gcc-4.8/changes.html. // Recent versions of Clang pretend to be 4.2 but they do support the builtin // swap functions. #include #include int main(int argc, char **argv) { uint16_t test16 = 0; test16 = __builtin_bswap16(test16); uint32_t test32 = 0; test32 = __builtin_bswap32(test32); uint64_t test64 = 0; test64 = __builtin_bswap64(test64); return EXIT_SUCCESS; }