Manpages - wcsncasecmp.3

wcsncasecmp - compare two fixed-size wide-character strings, ignoring case

  #include <wchar.h>

  int wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n);

Feature Test Macro Requirements for glibc (see *feature_test_macros*(7)):

*wcsncasecmp*():

      Since glibc 2.10:
          _POSIX_C_SOURCE >= 200809L
      Before glibc 2.10:
          _GNU_SOURCE

The *wcsncasecmp*() function is the wide-character equivalent of the *strncasecmp*(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, ignoring case differences (*towupper*(3), *towlower*(3)).

The *wcsncasecmp*() function returns zero if the wide-character strings at s1 and s2, truncated to at most length n, are equal except for case distinctions. It returns a positive integer if truncated s1 is greater than truncated s2, ignoring case. It returns a negative integer if truncated s1 is smaller than truncated s2, ignoring case.

The *wcsncasecmp*() function is provided in glibc since version 2.1.

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

POSIX.1-2008. This function is not specified in POSIX.1-2001, and is not widely available on other systems.

The behavior of wcsncasecmp*() depends on the *LC_CTYPE category of the current locale.

*strncasecmp*(3), *wcsncmp*(3)

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