/* Measure strcasecmp functions. Copyright (C) 2013-2018 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 <http://www.gnu.org/licenses/>. */ #include <ctype.h> #define TEST_MAIN #define TEST_NAME "strcasecmp" #include "bench-string.h" typedef int (*proto_t) (const char *, const char *); static int simple_strcasecmp (const char *, const char *); static int stupid_strcasecmp (const char *, const char *); IMPL (stupid_strcasecmp, 0) IMPL (simple_strcasecmp, 0) IMPL (strcasecmp, 1) static int simple_strcasecmp (const char *s1, const char *s2) { int ret; while ((ret = ((unsigned char) tolower (*s1) - (unsigned char) tolower (*s2))) == 0 && *s1++) ++s2; return ret; } static int stupid_strcasecmp (const char *s1, const char *s2) { size_t ns1 = strlen (s1) + 1, ns2 = strlen (s2) + 1; size_t n = ns1 < ns2 ? ns1 : ns2; int ret = 0; while (n--) { if ((ret = ((unsigned char) tolower (*s1) - (unsigned char) tolower (*s2))) != 0) break; ++s1; ++s2; } return ret; } static void do_one_test (impl_t *impl, const char *s1, const char *s2, int exp_result) { size_t i, iters = INNER_LOOP_ITERS; timing_t start, stop, cur; int result = CALL (impl, s1, s2); if ((exp_result == 0 && result != 0) || (exp_result < 0 && result >= 0) || (exp_result > 0 && result <= 0)) { error (0, 0, "Wrong result in function %s %d %d", impl->name, result, exp_result); ret = 1; return; } TIMING_NOW (start); for (i = 0; i < iters; ++i) { CALL (impl, s1, s2); } TIMING_NOW (stop); TIMING_DIFF (cur, start, stop); TIMING_PRINT_MEAN ((double) cur, (double) iters); } static void do_test (size_t align1, size_t align2, size_t len, int max_char, int exp_result) { size_t i; char *s1, *s2; if (len == 0) return; align1 &= 7; if (align1 + len + 1 >= page_size) return; align2 &= 7; if (align2 + len + 1 >= page_size) return; s1 = (char *) (buf1 + align1); s2 = (char *) (buf2 + align2); for (i = 0; i < len; i++) { s1[i] = toupper (1 + 23 * i % max_char); s2[i] = tolower (s1[i]); } s1[len] = s2[len] = 0; s1[len + 1] = 23; s2[len + 1] = 24 + exp_result; if ((s2[len - 1] == 'z' && exp_result == -1) || (s2[len - 1] == 'a' && exp_result == 1)) s1[len - 1] += exp_result; else s2[len - 1] -= exp_result; printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2); FOR_EACH_IMPL (impl, 0) do_one_test (impl, s1, s2, exp_result); putchar ('\n'); } int test_main (void) { size_t i; test_init (); printf ("%23s", ""); FOR_EACH_IMPL (impl, 0) printf ("\t%s", impl->name); putchar ('\n'); for (i = 1; i < 16; ++i) { do_test (i, i, i, 127, 0); do_test (i, i, i, 127, 1); do_test (i, i, i, 127, -1); } for (i = 1; i < 10; ++i) { do_test (0, 0, 2 << i, 127, 0); do_test (0, 0, 2 << i, 254, 0); do_test (0, 0, 2 << i, 127, 1); do_test (0, 0, 2 << i, 254, 1); do_test (0, 0, 2 << i, 127, -1); do_test (0, 0, 2 << i, 254, -1); } for (i = 1; i < 8; ++i) { do_test (i, 2 * i, 8 << i, 127, 0); do_test (2 * i, i, 8 << i, 254, 0); do_test (i, 2 * i, 8 << i, 127, 1); do_test (2 * i, i, 8 << i, 254, 1); do_test (i, 2 * i, 8 << i, 127, -1); do_test (2 * i, i, 8 << i, 254, -1); } return ret; } #include <support/test-driver.c>