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Diffstat (limited to 'REORG.TODO/string/test-strlen.c')
| -rw-r--r-- | REORG.TODO/string/test-strlen.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/REORG.TODO/string/test-strlen.c b/REORG.TODO/string/test-strlen.c new file mode 100644 index 0000000000..99be380e6e --- /dev/null +++ b/REORG.TODO/string/test-strlen.c @@ -0,0 +1,167 @@ +/* Test and measure STRLEN functions. + Copyright (C) 1999-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Written by Jakub Jelinek <jakub@redhat.com>, 1999. + Added wcslen support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011 + + 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 + <http://www.gnu.org/licenses/>. */ + +#define TEST_MAIN +#ifndef WIDE +# define TEST_NAME "strlen" +#else +# define TEST_NAME "wcslen" +#endif +#include "test-string.h" + +#ifndef WIDE +# define STRLEN strlen +# define CHAR char +# define MAX_CHAR CHAR_MAX +#else +# include <wchar.h> +# define STRLEN wcslen +# define CHAR wchar_t +# define MAX_CHAR WCHAR_MAX +#endif + +typedef size_t (*proto_t) (const CHAR *); + +size_t +simple_STRLEN (const CHAR *s) +{ + const CHAR *p; + + for (p = s; *p; ++p); + return p - s; +} + +#ifndef WIDE +size_t +builtin_strlen (const CHAR *p) +{ + return __builtin_strlen (p); +} +IMPL (builtin_strlen, 0) +#endif + +IMPL (simple_STRLEN, 0) +IMPL (STRLEN, 1) + + +static void +do_one_test (impl_t *impl, const CHAR *s, size_t exp_len) +{ + size_t len = CALL (impl, s); + if (len != exp_len) + { + error (0, 0, "Wrong result in function %s %zd %zd", impl->name, + len, exp_len); + ret = 1; + return; + } +} + +static void +do_test (size_t align, size_t len) +{ + size_t i; + + align &= 63; + if (align + sizeof(CHAR) * len >= page_size) + return; + + CHAR *buf = (CHAR *) (buf1); + + for (i = 0; i < len; ++i) + buf[align + i] = 1 + 11111 * i % MAX_CHAR; + buf[align + len] = 0; + + FOR_EACH_IMPL (impl, 0) + do_one_test (impl, (CHAR *) (buf + align), len); +} + +static void +do_random_tests (void) +{ + size_t i, j, n, align, len; + CHAR *p = (CHAR *) (buf1 + page_size - 512 * sizeof(CHAR)); + + for (n = 0; n < ITERATIONS; n++) + { + align = random () & 15; + len = random () & 511; + if (len + align > 510) + len = 511 - align - (random () & 7); + j = len + align + 64; + if (j > 512) + j = 512; + + for (i = 0; i < j; i++) + { + if (i == len + align) + p[i] = 0; + else + { + p[i] = random () & 255; + if (i >= align && i < len + align && !p[i]) + p[i] = (random () & 127) + 1; + } + } + + FOR_EACH_IMPL (impl, 1) + if (CALL (impl, (CHAR *) (p + align)) != len) + { + error (0, 0, "Iteration %zd - wrong result in function %s (%zd) %zd != %zd, p %p", + n, impl->name, align, CALL (impl, (CHAR *) (p + align)), + len, p); + ret = 1; + } + } +} + +int +test_main (void) +{ + size_t i; + + test_init (); + + printf ("%20s", ""); + FOR_EACH_IMPL (impl, 0) + printf ("\t%s", impl->name); + putchar ('\n'); + + /* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/ + + for (i = 1; i < 8; ++i) + { + do_test (sizeof(CHAR) * i, i); + do_test (0, i); + } + + for (i = 2; i <= 12; ++i) + { + do_test (0, 1 << i); + do_test (sizeof(CHAR) * 7, 1 << i); + do_test (sizeof(CHAR) * i, 1 << i); + do_test (sizeof(CHAR) * i, (size_t)((1 << i) / 1.5)); + } + + do_random_tests (); + return ret; +} + +#include <support/test-driver.c> |