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Use gcc __builtin_stdc_* builtins in stdbit.h if possible
[thirdparty/glibc.git] / stdlib / tst-stdc_count_zeros.c
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1/* Test stdc_count_zeros 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
21static const struct stdbit_test inputs[] =
22 {
23 { 0ULL, 8, 16, 32, 64 },
24 { 0x1ULL, 7, 15, 31, 63 },
25 { 0x2ULL, 7, 15, 31, 63 },
26 { 0x3ULL, 6, 14, 30, 62 },
27 { 0x4ULL, 7, 15, 31, 63 },
28 { 0x5ULL, 6, 14, 30, 62 },
29 { 0x6ULL, 6, 14, 30, 62 },
30 { 0x7ULL, 5, 13, 29, 61 },
31 { 0x8ULL, 7, 15, 31, 63 },
32 { 0x9ULL, 6, 14, 30, 62 },
33 { 0xaULL, 6, 14, 30, 62 },
34 { 0xbULL, 5, 13, 29, 61 },
35 { 0xcULL, 6, 14, 30, 62 },
36 { 0xdULL, 5, 13, 29, 61 },
37 { 0xeULL, 5, 13, 29, 61 },
38 { 0xfULL, 4, 12, 28, 60 },
39 { 0x10ULL, 7, 15, 31, 63 },
40 { 0x11ULL, 6, 14, 30, 62 },
41 { 0x12ULL, 6, 14, 30, 62 },
42 { 0x1fULL, 3, 11, 27, 59 },
43 { 0x20ULL, 7, 15, 31, 63 },
44 { 0x7fULL, 1, 9, 25, 57 },
45 { 0x80ULL, 7, 15, 31, 63 },
46 { 0x81ULL, 6, 14, 30, 62 },
47 { 0x9aULL, 4, 12, 28, 60 },
48 { 0xf3ULL, 2, 10, 26, 58 },
49 { 0xffULL, 0, 8, 24, 56 },
50 { 0x100ULL, 8, 15, 31, 63 },
51 { 0x101ULL, 7, 14, 30, 62 },
52 { 0x102ULL, 7, 14, 30, 62 },
53 { 0x1feULL, 1, 8, 24, 56 },
54 { 0x1ffULL, 0, 7, 23, 55 },
55 { 0x200ULL, 8, 15, 31, 63 },
56 { 0x234ULL, 5, 12, 28, 60 },
57 { 0x4567ULL, 3, 8, 24, 56 },
58 { 0x7fffULL, 0, 1, 17, 49 },
59 { 0x8000ULL, 8, 15, 31, 63 },
60 { 0x8001ULL, 7, 14, 30, 62 },
61 { 0xfffeULL, 1, 1, 17, 49 },
62 { 0xffffULL, 0, 0, 16, 48 },
63 { 0x10000ULL, 8, 16, 31, 63 },
64 { 0x10001ULL, 7, 15, 30, 62 },
65 { 0xfedcba98ULL, 5, 8, 12, 44 },
66 { 0xfffffefeULL, 1, 2, 2, 34 },
67 { 0xffffffffULL, 0, 0, 0, 32 },
68 { 0x100000000ULL, 8, 16, 32, 63 },
69 { 0x100000001ULL, 7, 15, 31, 62 },
70 { 0x123456789ULL, 5, 8, 18, 49 },
71 { 0x123456789abcdefULL, 1, 4, 12, 32 },
72 { 0x789abcdef0123456ULL, 4, 9, 19, 32 },
73 { 0x8000000000000000ULL, 8, 16, 32, 63 },
74 { 0x8000000000000001ULL, 7, 15, 31, 62 },
75 { 0xfffffffffffffffeULL, 1, 1, 1, 1 },
76 { 0xffffffffffffffffULL, 0, 0, 0, 0 },
77 };
78
79TEST_STDBIT_UI_TOPLEVEL (stdc_count_zeros);
80
81static int
82do_test (void)
83{
84 TEST_STDBIT_UI (stdc_count_zeros, inputs);
85 return 0;
86}
87
88#include <support/test-driver.c>