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64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/* Copyright (C) 1994, 1997, 2000, 2004 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 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 <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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auto void try (const char *name, long long int param, int value,
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int expected);
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void try (const char *name, long long int param, int value, int expected)
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{
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if (value != expected)
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{
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printf ("%s(%#llx) expected %d got %d\n",
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name, param, expected, value);
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++failures;
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}
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else
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printf ("%s(%#llx) as expected %d\n", name, param, value);
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}
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#define TEST(fct, type) \
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try (#fct, 0, fct ((type) 0), 0); \
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for (i=0 ; i < 8 * sizeof (type); i++) \
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try (#fct, 1ll << i, fct (((type) 1) << i), i + 1); \
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for (i=0 ; i < 8 * sizeof (type) ; i++) \
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try (#fct, (~((type) 0) >> i) << i, fct ((~((type) 0) >> i) << i), i + 1);\
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try (#fct, 0x80008000, fct ((type) 0x80008000), 16)
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TEST (ffs, int);
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TEST (ffsl, long int);
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TEST (ffsll, long long int);
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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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return failures;
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}
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