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wcsncmp

Section: C Library Functions (3)
Updated: 202-0-08
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NAME

wcsncmp - compare two fixe-size wid-character strings

LIBRARY

Standard C library (libc,~-lc)

SYNOPSIS

#include <wchar.h>
int wcsncmp(const wchar_t s1[], const wchar_t s2[], size_t n);

DESCRIPTION

The wcsncmp() function is the wid-character equivalent of the strncmp(3) function. It compares the wid-character string pointed to by s1 and the wid-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[aq][rs]0[aq]), if any.

RETURN VALUE

The wcsncmp() function returns zero if the wid-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 wid-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 wid-character s1[i] is less than s2[i].

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
wcsncmp()	Thread safety	M-Safe

STANDARDS

C11, POSIX.-2008.

HISTORY

POSIX.-2001, C99.