54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
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On-Line Applications Research Corporation.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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int
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main (void)
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{
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int failures = 0;
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int i;
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void try (int value, int expected)
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{
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if (ffs (value) != expected)
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{
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fprintf (stderr, "%#x expected %d got %d\n",
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value, expected, ffs (value));
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++failures;
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}
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}
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try (0, 0);
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for (i=0 ; i<32 ; i++)
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try (1<<i, i+1);
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for (i=0 ; i<32 ; i++)
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try ((~0 >> i) << i, i+1);
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try (0x80008000, 16);
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if (failures)
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printf ("Test FAILED! %d failure%s.\n", failures, &"s"[failures == 1]);
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else
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puts ("Test succeeded.");
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exit (failures);
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}
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