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