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)
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