Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
[linux-2.6/luiz-linux-2.6.git] / lib / ucs2_string.c
blob6f500ef2301d893c9b2c737747fc355974ff4a19
1 #include <linux/ucs2_string.h>
2 #include <linux/module.h>
4 /* Return the number of unicode characters in data */
5 unsigned long
6 ucs2_strnlen(const ucs2_char_t *s, size_t maxlength)
8 unsigned long length = 0;
10 while (*s++ != 0 && length < maxlength)
11 length++;
12 return length;
14 EXPORT_SYMBOL(ucs2_strnlen);
16 unsigned long
17 ucs2_strlen(const ucs2_char_t *s)
19 return ucs2_strnlen(s, ~0UL);
21 EXPORT_SYMBOL(ucs2_strlen);
24 * Return the number of bytes is the length of this string
25 * Note: this is NOT the same as the number of unicode characters
27 unsigned long
28 ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength)
30 return ucs2_strnlen(data, maxlength/sizeof(ucs2_char_t)) * sizeof(ucs2_char_t);
32 EXPORT_SYMBOL(ucs2_strsize);
34 int
35 ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len)
37 while (1) {
38 if (len == 0)
39 return 0;
40 if (*a < *b)
41 return -1;
42 if (*a > *b)
43 return 1;
44 if (*a == 0) /* implies *b == 0 */
45 return 0;
46 a++;
47 b++;
48 len--;
51 EXPORT_SYMBOL(ucs2_strncmp);