/* Copyright (C) 2000-2020 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #include <byteswap.h> #include <stdio.h> extern unsigned long long int wash (unsigned long long int a); int do_test (void) { int result = 0; /* Test the functions with constant arguments. */ if (bswap_16 (0x1234) != 0x3412) { puts ("bswap_16 (constant) flunked"); result = 1; } if (bswap_32 (0x12345678) != 0x78563412) { puts ("bswap_32 (constant) flunked"); result = 1; } if (bswap_64 (0x1234567890abcdefULL) != 0xefcdab9078563412ULL) { puts ("bswap_64 (constant) flunked"); result = 1; } /* Test the functions with non-constant arguments. */ if (bswap_16 (wash (0x1234)) != 0x3412) { puts ("bswap_16 (non-constant) flunked"); result = 1; } if (bswap_32 (wash (0x12345678)) != 0x78563412) { puts ("bswap_32 (non-constant) flunked"); result = 1; } if (bswap_64 (wash (0x1234567890abcdefULL)) != 0xefcdab9078563412ULL) { puts ("bswap_64 (non-constant) flunked"); result = 1; } return result; } unsigned long long int wash (unsigned long long int a) { /* Do nothing. This function simply exists to avoid that the compiler regards the argument to the bswap_*() functions as constant. */ return a + 0; } #include <support/test-driver.c>