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-rw-r--r--string/test-strncasecmp.c318
1 files changed, 318 insertions, 0 deletions
diff --git a/string/test-strncasecmp.c b/string/test-strncasecmp.c
new file mode 100644
index 0000000000..80e4d6315e
--- /dev/null
+++ b/string/test-strncasecmp.c
@@ -0,0 +1,318 @@
+/* Test and measure strncasecmp functions.
+ Copyright (C) 1999, 2002, 2003, 2005, 2010 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Jakub Jelinek <jakub@redhat.com>, 1999.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <ctype.h>
+#define TEST_MAIN
+#include "test-string.h"
+
+typedef int (*proto_t) (const char *, const char *, size_t);
+static int simple_strncasecmp (const char *, const char *, size_t);
+static int stupid_strncasecmp (const char *, const char *, size_t);
+
+IMPL (stupid_strncasecmp, 0)
+IMPL (simple_strncasecmp, 0)
+IMPL (strncasecmp, 1)
+
+static int
+simple_strncasecmp (const char *s1, const char *s2, size_t n)
+{
+ int ret;
+
+ if (n == 0)
+ return 0;
+
+ while ((ret = ((unsigned char) tolower (*s1)
+ - (unsigned char) tolower (*s2))) == 0
+ && *s1++)
+ {
+ if (--n == 0)
+ return 0;
+ ++s2;
+ }
+ return ret;
+}
+
+static int
+stupid_strncasecmp (const char *s1, const char *s2, size_t max)
+{
+ size_t ns1 = strlen (s1) + 1;
+ size_t ns2 = strlen (s2) + 1;
+ size_t n = ns1 < ns2 ? ns1 : ns2;
+ if (n > max)
+ n = max;
+ 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, size_t n,
+ int exp_result)
+{
+ int result = CALL (impl, s1, s2, n);
+ 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;
+ }
+
+ if (HP_TIMING_AVAIL)
+ {
+ hp_timing_t start __attribute ((unused));
+ hp_timing_t stop __attribute ((unused));
+ hp_timing_t best_time = ~ (hp_timing_t) 0;
+ size_t i;
+
+ for (i = 0; i < 32; ++i)
+ {
+ HP_TIMING_NOW (start);
+ CALL (impl, s1, s2, n);
+ HP_TIMING_NOW (stop);
+ HP_TIMING_BEST (best_time, start, stop);
+ }
+
+ printf ("\t%zd", (size_t) best_time);
+ }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t n, 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;
+
+ if (HP_TIMING_AVAIL)
+ printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+ FOR_EACH_IMPL (impl, 0)
+ do_one_test (impl, s1, s2, n, exp_result);
+
+ if (HP_TIMING_AVAIL)
+ putchar ('\n');
+}
+
+static void
+do_random_tests (void)
+{
+ size_t i, j, n, align1, align2, pos, len1, len2;
+ int result;
+ long r;
+ unsigned char *p1 = buf1 + page_size - 512;
+ unsigned char *p2 = buf2 + page_size - 512;
+
+ for (n = 0; n < ITERATIONS; n++)
+ {
+ align1 = random () & 31;
+ if (random () & 1)
+ align2 = random () & 31;
+ else
+ align2 = align1 + (random () & 24);
+ pos = random () & 511;
+ j = align1 > align2 ? align1 : align2;
+ if (pos + j >= 511)
+ pos = 510 - j - (random () & 7);
+ len1 = random () & 511;
+ if (pos >= len1 && (random () & 1))
+ len1 = pos + (random () & 7);
+ if (len1 + j >= 512)
+ len1 = 511 - j - (random () & 7);
+ if (pos >= len1)
+ len2 = len1;
+ else
+ len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0);
+ j = (pos > len2 ? pos : len2) + align1 + 64;
+ if (j > 512)
+ j = 512;
+ for (i = 0; i < j; ++i)
+ {
+ p1[i] = tolower (random () & 255);
+ if (i < len1 + align1 && !p1[i])
+ {
+ p1[i] = tolower (random () & 255);
+ if (!p1[i])
+ p1[i] = tolower (1 + (random () & 127));
+ }
+ }
+ for (i = 0; i < j; ++i)
+ {
+ p2[i] = toupper (random () & 255);
+ if (i < len2 + align2 && !p2[i])
+ {
+ p2[i] = toupper (random () & 255);
+ if (!p2[i])
+ toupper (p2[i] = 1 + (random () & 127));
+ }
+ }
+
+ result = 0;
+ memcpy (p2 + align2, p1 + align1, pos);
+ if (pos < len1)
+ {
+ if (tolower (p2[align2 + pos]) == p1[align1 + pos])
+ {
+ p2[align2 + pos] = toupper (random () & 255);
+ if (tolower (p2[align2 + pos]) == p1[align1 + pos])
+ p2[align2 + pos] = toupper (p1[align1 + pos]
+ + 3 + (random () & 127));
+ }
+
+ if (p1[align1 + pos] < tolower (p2[align2 + pos]))
+ result = -1;
+ else
+ result = 1;
+ }
+ p1[len1 + align1] = 0;
+ p2[len2 + align2] = 0;
+
+ FOR_EACH_IMPL (impl, 1)
+ {
+ r = CALL (impl, (char *) (p1 + align1), (char *) (p2 + align2),
+ pos + 1 + (random () & 255));
+ /* Test whether on 64-bit architectures where ABI requires
+ callee to promote has the promotion been done. */
+ asm ("" : "=g" (r) : "0" (r));
+ if ((r == 0 && result)
+ || (r < 0 && result >= 0)
+ || (r > 0 && result <= 0))
+ {
+ error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p",
+ n, impl->name, align1, align2, len1, len2, pos, r, result, p1, p2);
+ ret = 1;
+ }
+ }
+ }
+}
+
+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 - 1, i, 127, 0);
+
+ do_test (i, i, i, i, 127, 0);
+ do_test (i, i, i, i, 127, 1);
+ do_test (i, i, i, i, 127, -1);
+
+ do_test (i, i, i + 1, i, 127, 0);
+ do_test (i, i, i + 1, i, 127, 1);
+ do_test (i, i, i + 1, i, 127, -1);
+ }
+
+ for (i = 1; i < 10; ++i)
+ {
+ do_test (0, 0, (2 << i) - 1, 2 << i, 127, 0);
+ do_test (0, 0, 2 << i, 2 << i, 254, 0);
+ do_test (0, 0, (2 << i) + 1, 2 << i, 127, 0);
+
+ do_test (0, 0, (2 << i) + 1, 2 << i, 254, 0);
+
+ do_test (0, 0, 2 << i, 2 << i, 127, 1);
+ do_test (0, 0, (2 << i) + 10, 2 << i, 127, 1);
+
+ do_test (0, 0, 2 << i, 2 << i, 254, 1);
+ do_test (0, 0, (2 << i) + 10, 2 << i, 254, 1);
+
+ do_test (0, 0, 2 << i, 2 << i, 127, -1);
+ do_test (0, 0, (2 << i) + 10, 2 << i, 127, -1);
+
+ do_test (0, 0, 2 << i, 2 << i, 254, -1);
+ do_test (0, 0, (2 << i) + 10, 2 << i, 254, -1);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, (8 << i) - 1, 8 << i, 127, 0);
+ do_test (i, 2 * i, 8 << i, 8 << i, 127, 0);
+ do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 0);
+
+ do_test (2 * i, i, (8 << i) - 1, 8 << i, 254, 0);
+ do_test (2 * i, i, 8 << i, 8 << i, 254, 0);
+ do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 0);
+
+ do_test (i, 2 * i, 8 << i, 8 << i, 127, 1);
+ do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 1);
+
+ do_test (2 * i, i, 8 << i, 8 << i, 254, 1);
+ do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 1);
+
+ do_test (i, 2 * i, 8 << i, 8 << i, 127, -1);
+ do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, -1);
+
+ do_test (2 * i, i, 8 << i, 8 << i, 254, -1);
+ do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, -1);
+ }
+
+ do_random_tests ();
+ return ret;
+}
+
+#include "../test-skeleton.c"
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