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Name

wcsncmp - compare two fixed-size wide-character strings

Library

Standard C library ( libc ", " -lc )

Synopsis

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

Description

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'\e0'), if any.

Return Value

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].

Attributes

For an explanation of the terms used in this section, see attributes(7). allbox; lbx lb lb T{ wcsncmp()
InterfaceAttributeValue
T}Thread safetyMT-Safe

Standards

C11, POSIX.1-2008.

History

POSIX.1-2001, C99.

See Also

  1. strncmp(3),
  2. wcsncasecmp(3)