diff options
Diffstat (limited to 'stdlib/tst-stdc_first_leading_one.c')
-rw-r--r-- | stdlib/tst-stdc_first_leading_one.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/stdlib/tst-stdc_first_leading_one.c b/stdlib/tst-stdc_first_leading_one.c new file mode 100644 index 0000000000..63f24bd5fe --- /dev/null +++ b/stdlib/tst-stdc_first_leading_one.c @@ -0,0 +1,88 @@ +/* Test stdc_first_leading_one functions and macros. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <tst-stdbit.h> + +static const struct stdbit_test inputs[] = + { + { 0ULL, 0, 0, 0, 0 }, + { 0x1ULL, 8, 16, 32, 64 }, + { 0x2ULL, 7, 15, 31, 63 }, + { 0x3ULL, 7, 15, 31, 63 }, + { 0x4ULL, 6, 14, 30, 62 }, + { 0x5ULL, 6, 14, 30, 62 }, + { 0x6ULL, 6, 14, 30, 62 }, + { 0x7ULL, 6, 14, 30, 62 }, + { 0x8ULL, 5, 13, 29, 61 }, + { 0x9ULL, 5, 13, 29, 61 }, + { 0xaULL, 5, 13, 29, 61 }, + { 0xbULL, 5, 13, 29, 61 }, + { 0xcULL, 5, 13, 29, 61 }, + { 0xdULL, 5, 13, 29, 61 }, + { 0xeULL, 5, 13, 29, 61 }, + { 0xfULL, 5, 13, 29, 61 }, + { 0x10ULL, 4, 12, 28, 60 }, + { 0x11ULL, 4, 12, 28, 60 }, + { 0x12ULL, 4, 12, 28, 60 }, + { 0x1fULL, 4, 12, 28, 60 }, + { 0x20ULL, 3, 11, 27, 59 }, + { 0x7fULL, 2, 10, 26, 58 }, + { 0x80ULL, 1, 9, 25, 57 }, + { 0x81ULL, 1, 9, 25, 57 }, + { 0x9aULL, 1, 9, 25, 57 }, + { 0xf3ULL, 1, 9, 25, 57 }, + { 0xffULL, 1, 9, 25, 57 }, + { 0x100ULL, 0, 8, 24, 56 }, + { 0x101ULL, 8, 8, 24, 56 }, + { 0x102ULL, 7, 8, 24, 56 }, + { 0x1feULL, 1, 8, 24, 56 }, + { 0x1ffULL, 1, 8, 24, 56 }, + { 0x200ULL, 0, 7, 23, 55 }, + { 0x234ULL, 3, 7, 23, 55 }, + { 0x4567ULL, 2, 2, 18, 50 }, + { 0x7fffULL, 1, 2, 18, 50 }, + { 0x8000ULL, 0, 1, 17, 49 }, + { 0x8001ULL, 8, 1, 17, 49 }, + { 0xfffeULL, 1, 1, 17, 49 }, + { 0xffffULL, 1, 1, 17, 49 }, + { 0x10000ULL, 0, 0, 16, 48 }, + { 0x10001ULL, 8, 16, 16, 48 }, + { 0xfedcba98ULL, 1, 1, 1, 33 }, + { 0xfffffefeULL, 1, 1, 1, 33 }, + { 0xffffffffULL, 1, 1, 1, 33 }, + { 0x100000000ULL, 0, 0, 0, 32 }, + { 0x100000001ULL, 8, 16, 32, 32 }, + { 0x123456789ULL, 1, 2, 3, 32 }, + { 0x123456789abcdefULL, 1, 1, 1, 8 }, + { 0x789abcdef0123456ULL, 2, 3, 1, 2 }, + { 0x8000000000000000ULL, 0, 0, 0, 1 }, + { 0x8000000000000001ULL, 8, 16, 32, 1 }, + { 0xfffffffffffffffeULL, 1, 1, 1, 1 }, + { 0xffffffffffffffffULL, 1, 1, 1, 1 }, + }; + +TEST_STDBIT_UI_TOPLEVEL (stdc_first_leading_one); + +static int +do_test (void) +{ + TEST_STDBIT_UI (stdc_first_leading_one, inputs); + return 0; +} + +#include <support/test-driver.c> |