wcsncmp - compare two fixed-size wide-character strings
#include <wchar.h>
int wcsncmp(const wchar_t *s1, const wchar_t *s2, size_t n);
The
wcsncmp() function is the wide-character equivalent of the
strncmp(3) function. It compares the wide-character string pointed to
by
s1 and the wide-character string pointed to by
s2, but at
most
n wide characters from each string. In each string, the comparison
extends only up to the first occurrence of a null wide character (L'\0'), if
any.
The
wcsncmp() function returns zero if the wide-character strings at
s1 and
s2, truncated to at most length
n, are equal. It
returns an integer greater than zero if at the first differing position
i (
i <
n), the corresponding wide-character
s1[i] is greater than
s2[i]. It returns an integer less than
zero if at the first differing position
i (
i <
n), the
corresponding wide-character
s1[i] is less than
s2[i].
For an explanation of the terms used in this section, see
attributes(7).
Interface |
Attribute |
Value |
wcsncmp () |
Thread safety |
MT-Safe |
POSIX.1-2001, POSIX.1-2008, C99.
strncmp(3),
wcsncasecmp(3)