| 1 | /* Test stdc_first_trailing_one functions and macros. |
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| 2 | Copyright (C) 2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <tst-stdbit.h> |
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| 20 | |
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| 21 | static const struct stdbit_test inputs[] = |
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| 22 | { |
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| 23 | { 0ULL, 0, 0, 0, 0 }, |
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| 24 | { 0x1ULL, 1, 1, 1, 1 }, |
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| 25 | { 0x2ULL, 2, 2, 2, 2 }, |
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| 26 | { 0x3ULL, 1, 1, 1, 1 }, |
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| 27 | { 0x4ULL, 3, 3, 3, 3 }, |
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| 28 | { 0x5ULL, 1, 1, 1, 1 }, |
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| 29 | { 0x6ULL, 2, 2, 2, 2 }, |
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| 30 | { 0x7ULL, 1, 1, 1, 1 }, |
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| 31 | { 0x8ULL, 4, 4, 4, 4 }, |
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| 32 | { 0x9ULL, 1, 1, 1, 1 }, |
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| 33 | { 0xaULL, 2, 2, 2, 2 }, |
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| 34 | { 0xbULL, 1, 1, 1, 1 }, |
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| 35 | { 0xcULL, 3, 3, 3, 3 }, |
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| 36 | { 0xdULL, 1, 1, 1, 1 }, |
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| 37 | { 0xeULL, 2, 2, 2, 2 }, |
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| 38 | { 0xfULL, 1, 1, 1, 1 }, |
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| 39 | { 0x10ULL, 5, 5, 5, 5 }, |
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| 40 | { 0x11ULL, 1, 1, 1, 1 }, |
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| 41 | { 0x12ULL, 2, 2, 2, 2 }, |
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| 42 | { 0x1fULL, 1, 1, 1, 1 }, |
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| 43 | { 0x20ULL, 6, 6, 6, 6 }, |
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| 44 | { 0x7fULL, 1, 1, 1, 1 }, |
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| 45 | { 0x80ULL, 8, 8, 8, 8 }, |
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| 46 | { 0x81ULL, 1, 1, 1, 1 }, |
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| 47 | { 0x9aULL, 2, 2, 2, 2 }, |
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| 48 | { 0xf3ULL, 1, 1, 1, 1 }, |
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| 49 | { 0xffULL, 1, 1, 1, 1 }, |
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| 50 | { 0x100ULL, 0, 9, 9, 9 }, |
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| 51 | { 0x101ULL, 1, 1, 1, 1 }, |
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| 52 | { 0x102ULL, 2, 2, 2, 2 }, |
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| 53 | { 0x1feULL, 2, 2, 2, 2 }, |
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| 54 | { 0x1ffULL, 1, 1, 1, 1 }, |
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| 55 | { 0x200ULL, 0, 10, 10, 10 }, |
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| 56 | { 0x234ULL, 3, 3, 3, 3 }, |
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| 57 | { 0x4567ULL, 1, 1, 1, 1 }, |
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| 58 | { 0x7fffULL, 1, 1, 1, 1 }, |
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| 59 | { 0x8000ULL, 0, 16, 16, 16 }, |
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| 60 | { 0x8001ULL, 1, 1, 1, 1 }, |
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| 61 | { 0xfffeULL, 2, 2, 2, 2 }, |
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| 62 | { 0xffffULL, 1, 1, 1, 1 }, |
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| 63 | { 0x10000ULL, 0, 0, 17, 17 }, |
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| 64 | { 0x10001ULL, 1, 1, 1, 1 }, |
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| 65 | { 0xfedcba98ULL, 4, 4, 4, 4 }, |
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| 66 | { 0xfffffefeULL, 2, 2, 2, 2 }, |
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| 67 | { 0xffffffffULL, 1, 1, 1, 1 }, |
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| 68 | { 0x100000000ULL, 0, 0, 0, 33 }, |
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| 69 | { 0x100000001ULL, 1, 1, 1, 1 }, |
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| 70 | { 0x123456789ULL, 1, 1, 1, 1 }, |
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| 71 | { 0x123456789abcdefULL, 1, 1, 1, 1 }, |
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| 72 | { 0x789abcdef0123456ULL, 2, 2, 2, 2 }, |
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| 73 | { 0x8000000000000000ULL, 0, 0, 0, 64 }, |
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| 74 | { 0x8000000000000001ULL, 1, 1, 1, 1 }, |
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| 75 | { 0xfffffffffffffffeULL, 2, 2, 2, 2 }, |
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| 76 | { 0xffffffffffffffffULL, 1, 1, 1, 1 }, |
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| 77 | }; |
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| 78 | |
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| 79 | TEST_STDBIT_UI_TOPLEVEL (stdc_first_trailing_one); |
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| 80 | |
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| 81 | static int |
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| 82 | do_test (void) |
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| 83 | { |
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| 84 | TEST_STDBIT_UI (stdc_first_trailing_one, inputs); |
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| 85 | return 0; |
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| 86 | } |
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| 87 | |
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| 88 | #include <support/test-driver.c> |
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| 89 | |
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