| 1 | /* Copyright (C) 1994-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <stdlib.h> |
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| 19 | #include <stdio.h> |
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| 20 | #include <string.h> |
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| 21 | #include <support/check.h> |
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| 22 | |
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| 23 | void try (const char *name, long long int param, int value, int expected) |
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| 24 | { |
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| 25 | if (value != expected) |
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| 26 | { |
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| 27 | printf (format: "%s(%#llx) expected %d got %d\n" , |
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| 28 | name, param, expected, value); |
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| 29 | support_record_failure (); |
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| 30 | } |
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| 31 | else |
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| 32 | printf (format: "%s(%#llx) as expected %d\n" , name, param, value); |
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| 33 | } |
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| 34 | |
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| 35 | int |
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| 36 | do_test (void) |
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| 37 | { |
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| 38 | int i; |
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| 39 | |
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| 40 | #define TEST(fct, type) \ |
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| 41 | try (#fct, 0, fct ((type) 0), 0); \ |
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| 42 | for (i=0 ; i < 8 * sizeof (type); i++) \ |
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| 43 | try (#fct, 1ll << i, fct (((type) 1) << i), i + 1); \ |
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| 44 | for (i=0 ; i < 8 * sizeof (type) ; i++) \ |
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| 45 | try (#fct, (~((type) 0) >> i) << i, fct ((~((type) 0) >> i) << i), i + 1);\ |
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| 46 | try (#fct, 0x80008000, fct ((type) 0x80008000), 16) |
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| 47 | |
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| 48 | TEST (ffs, int); |
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| 49 | TEST (ffsl, long int); |
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| 50 | TEST (ffsll, long long int); |
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| 51 | |
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| 52 | return 0; |
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| 53 | } |
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| 54 | |
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| 55 | #include <support/test-driver.c> |
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| 56 | |
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