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-rw-r--r--libc/string/test-memcmp.c125
1 files changed, 79 insertions, 46 deletions
diff --git a/libc/string/test-memcmp.c b/libc/string/test-memcmp.c
index 3040e212a..f246d3a78 100644
--- a/libc/string/test-memcmp.c
+++ b/libc/string/test-memcmp.c
@@ -1,7 +1,8 @@
/* Test and measure memcmp functions.
- Copyright (C) 1999, 2002, 2003, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2002, 2003, 2005, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
+ Added wmemcmp 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
@@ -20,25 +21,57 @@
#define TEST_MAIN
#include "test-string.h"
-
-typedef int (*proto_t) (const char *, const char *, size_t);
-int simple_memcmp (const char *, const char *, size_t);
-
-IMPL (simple_memcmp, 0)
-IMPL (memcmp, 1)
+#ifdef WIDE
+# include <inttypes.h>
+# include <wchar.h>
+
+# define MEMCMP wmemcmp
+# define MEMCPY wmemcpy
+# define SIMPLE_MEMCMP simple_wmemcmp
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define CHARBYTES 4
+# define CHAR__MIN WCHAR_MIN
+# define CHAR__MAX WCHAR_MAX
+int
+simple_wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n)
+{
+ int ret = 0;
+ /* Warning!
+ wmemcmp has to use SIGNED comparison for elements.
+ memcmp has to use UNSIGNED comparison for elemnts.
+ */
+ while (n-- && (ret = *s1 < *s2 ? -1 : *s1 == *s2 ? 0 : 1) == 0) {s1++; s2++;}
+ return ret;
+}
+#else
+# define MEMCMP memcmp
+# define MEMCPY memcpy
+# define SIMPLE_MEMCMP simple_memcmp
+# define CHAR char
+# define MAX_CHAR 255
+# define UCHAR unsigned char
+# define CHARBYTES 1
+# define CHAR__MIN CHAR_MIN
+# define CHAR__MAX CHAR_MAX
int
simple_memcmp (const char *s1, const char *s2, size_t n)
{
int ret = 0;
- while (n--
- && (ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) == 0);
+ while (n-- && (ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) == 0);
return ret;
}
+#endif
+
+typedef int (*proto_t) (const CHAR *, const CHAR *, size_t);
+
+IMPL (SIMPLE_MEMCMP, 0)
+IMPL (MEMCMP, 1)
static int
-check_result (impl_t *impl, const char *s1, const char *s2, size_t len,
+check_result (impl_t *impl, const CHAR *s1, const CHAR *s2, size_t len,
int exp_result)
{
int result = CALL (impl, s1, s2, len);
@@ -56,7 +89,7 @@ check_result (impl_t *impl, const char *s1, const char *s2, size_t len,
}
static void
-do_one_test (impl_t *impl, const char *s1, const char *s2, size_t len,
+do_one_test (impl_t *impl, const CHAR *s1, const CHAR *s2, size_t len,
int exp_result)
{
if (check_result (impl, s1, s2, len, exp_result) < 0)
@@ -85,24 +118,24 @@ static void
do_test (size_t align1, size_t align2, size_t len, int exp_result)
{
size_t i;
- char *s1, *s2;
+ CHAR *s1, *s2;
if (len == 0)
return;
- align1 &= 7;
- if (align1 + len >= page_size)
+ align1 &= 63;
+ if (align1 + (len + 1) * CHARBYTES >= page_size)
return;
- align2 &= 7;
- if (align2 + len >= page_size)
+ align2 &= 63;
+ if (align2 + (len + 1) * CHARBYTES >= page_size)
return;
- s1 = (char *) (buf1 + align1);
- s2 = (char *) (buf2 + align2);
+ s1 = (CHAR *) (buf1 + align1);
+ s2 = (CHAR *) (buf2 + align2);
for (i = 0; i < len; i++)
- s1[i] = s2[i] = 1 + 23 * i % 255;
+ s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % CHAR__MAX;
s1[len] = align1;
s2[len] = align2;
@@ -124,12 +157,12 @@ do_random_tests (void)
size_t i, j, n, align1, align2, pos, len;
int result;
long r;
- unsigned char *p1 = buf1 + page_size - 512;
- unsigned char *p2 = buf2 + page_size - 512;
+ UCHAR *p1 = (UCHAR *) (buf1 + page_size - 512 * CHARBYTES);
+ UCHAR *p2 = (UCHAR *) (buf2 + page_size - 512 * CHARBYTES);
for (n = 0; n < ITERATIONS; n++)
{
- align1 = random () & 31;
+ align1 = random () & 31;
if (random () & 1)
align2 = random () & 31;
else
@@ -142,7 +175,7 @@ do_random_tests (void)
pos = 511 - j - (random () & 7);
len = random () & 511;
if (len + j >= 512)
- len = 511 - j - (random () & 7);
+ len = 511 - j - (random () & 7);
j = len + align1 + 64;
if (j > 512) j = 512;
for (i = 0; i < j; ++i)
@@ -152,10 +185,10 @@ do_random_tests (void)
result = 0;
if (pos >= len)
- memcpy (p2 + align2, p1 + align1, len);
+ MEMCPY ((CHAR *) p2 + align2, (const CHAR *) p1 + align1, len);
else
{
- memcpy (p2 + align2, p1 + align1, pos);
+ MEMCPY ((CHAR *) p2 + align2, (const CHAR *) p1 + align1, pos);
if (p2[align2 + pos] == p1[align1 + pos])
{
p2[align2 + pos] = random () & 255;
@@ -171,16 +204,14 @@ do_random_tests (void)
FOR_EACH_IMPL (impl, 1)
{
- r = CALL (impl, (char *) (p1 + align1), (char *) (p2 + align2), len);
- /* Test whether on 64-bit architectures where ABI requires
- callee to promote has the promotion been done. */
- asm ("" : "=g" (r) : "0" (r));
+ r = CALL (impl, (CHAR *) p1 + align1, (const CHAR *) p2 + align2,
+ len);
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) %ld != %d, p1 %p p2 %p",
- n, impl->name, align1, align2, len, pos, r, result, p1, p2);
+ n, impl->name, align1 * CHARBYTES & 63, align2 * CHARBYTES & 63, len, pos, r, result, p1, p2);
ret = 1;
}
}
@@ -190,7 +221,7 @@ do_random_tests (void)
static void
check1 (void)
{
- char s1[116], s2[116];
+ CHAR s1[116], s2[116];
int n, exp_result;
s1[0] = -108;
@@ -395,8 +426,8 @@ check1 (void)
s2[99] = 1;
s1[100] = 116;
s2[100] = 116;
- s1[101] = -13;
- s2[101] = -13;
+ s1[101] = CHAR__MIN;
+ s2[101] = CHAR__MAX;
s1[102] = -109;
s2[102] = -109;
s1[103] = 1;
@@ -417,8 +448,8 @@ check1 (void)
s2[110] = -109;
s1[111] = 1;
s2[111] = 1;
- s1[112] = 20;
- s2[112] = 20;
+ s1[112] = CHAR__MAX;
+ s2[112] = CHAR__MIN;
s1[113] = -13;
s2[113] = -13;
s1[114] = -109;
@@ -427,9 +458,12 @@ check1 (void)
s2[115] = 1;
n = 116;
- exp_result = simple_memcmp (s1, s2, n);
- FOR_EACH_IMPL (impl, 0)
- check_result (impl, s1, s2, n, exp_result);
+ for (size_t i = 0; i < n; i++)
+ {
+ exp_result = SIMPLE_MEMCMP (s1 + i, s2 + i, n - i);
+ FOR_EACH_IMPL (impl, 0)
+ check_result (impl, s1 + i, s2 + i, n - i, exp_result);
+ }
}
int
@@ -448,9 +482,9 @@ test_main (void)
for (i = 1; i < 16; ++i)
{
- do_test (i, i, i, 0);
- do_test (i, i, i, 1);
- do_test (i, i, i, -1);
+ do_test (i * CHARBYTES, i * CHARBYTES, i, 0);
+ do_test (i * CHARBYTES, i * CHARBYTES, i, 1);
+ do_test (i * CHARBYTES, i * CHARBYTES, i, -1);
}
for (i = 0; i < 16; ++i)
@@ -466,20 +500,19 @@ test_main (void)
do_test (0, 0, 2 << i, 1);
do_test (0, 0, 2 << i, -1);
do_test (0, 0, 16 << i, 0);
- do_test (8 - i, 2 * i, 16 << i, 0);
+ do_test ((8 - i) * CHARBYTES, (2 * i) * CHARBYTES, 16 << i, 0);
do_test (0, 0, 16 << i, 1);
do_test (0, 0, 16 << i, -1);
}
for (i = 1; i < 8; ++i)
{
- do_test (i, 2 * i, 8 << i, 0);
- do_test (i, 2 * i, 8 << i, 1);
- do_test (i, 2 * i, 8 << i, -1);
+ do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 0);
+ do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 1);
+ do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, -1);
}
do_random_tests ();
return ret;
}
-
#include "../test-skeleton.c"
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-19 10:48:52 +0000