Blame string/tst-bswap.c

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/* Copyright (C) 2000-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   Contributed by Ulrich Drepper <drepper@cygnus.com>.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, see
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   <http://www.gnu.org/licenses/>.  */
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#include <byteswap.h>
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#include <stdio.h>
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extern unsigned long long int wash (unsigned long long int a);
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int
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do_test (void)
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{
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  int result = 0;
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  /* Test the functions with constant arguments.  */
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  if (bswap_16 (0x1234) != 0x3412)
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    {
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      puts ("bswap_16 (constant) flunked");
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      result = 1;
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    }
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  if (bswap_32 (0x12345678) != 0x78563412)
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    {
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      puts ("bswap_32 (constant) flunked");
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      result = 1;
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    }
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  if (bswap_64 (0x1234567890abcdefULL) != 0xefcdab9078563412ULL)
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    {
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      puts ("bswap_64 (constant) flunked");
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      result = 1;
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    }
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  /* Test the functions with non-constant arguments.  */
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  if (bswap_16 (wash (0x1234)) != 0x3412)
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    {
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      puts ("bswap_16 (non-constant) flunked");
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      result = 1;
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    }
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  if (bswap_32 (wash (0x12345678)) != 0x78563412)
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    {
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      puts ("bswap_32 (non-constant) flunked");
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      result = 1;
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    }
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  if (bswap_64 (wash (0x1234567890abcdefULL)) != 0xefcdab9078563412ULL)
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    {
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      puts ("bswap_64 (non-constant) flunked");
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      result = 1;
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    }
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  return result;
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}
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unsigned long long int
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wash (unsigned long long int a)
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{
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  /* Do nothing.  This function simply exists to avoid that the compiler
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     regards the argument to the bswap_*() functions as constant.  */
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  return a + 0;
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}
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#include <support/test-driver.c>