wcsncasecmp(3) — Linux manual page

wcsncasecmp(3)          Library Functions Manual          wcsncasecmp(3)

NAME

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

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <wchar.h>

       int wcsncasecmp(const wchar_t s1[.n], const wchar_t s2[.n], 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

DESCRIPTION

       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)).

RETURN VALUE

       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.

ATTRIBUTES

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────────────────────────┬───────────────┬────────────────┐
       │ Interface                    │ Attribute     │ Value          │
       ├──────────────────────────────┼───────────────┼────────────────┤
       │ wcsncasecmp()                │ Thread safety │ MT-Safe locale │
       └──────────────────────────────┴───────────────┴────────────────┘

STANDARDS

       POSIX.1-2008.

HISTORY

       glibc 2.1.

NOTES

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

SEE ALSO

       strncasecmp(3), wcsncmp(3)

COLOPHON

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Linux man-pages 6.9.1          2024-05-02                 wcsncasecmp(3)

Pages that refer to this page: strcasecmp(3), wcsncmp(3)

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