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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | STANDARDS | HISTORY | NOTES | SEE ALSO | COLOPHON |
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wcscasecmp(3) Library Functions Manual wcscasecmp(3)
wcscasecmp, wcsncasecmp - compare two wide-character strings,
ignoring case
Standard C library (libc, -lc)
#include <wchar.h>
int wcscasecmp(const wchar_t *s1, const wchar_t *s2);
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)):
wcscasecmp(), wcsncasecmp():
Since glibc 2.10:
_POSIX_C_SOURCE >= 200809L
Before glibc 2.10:
_GNU_SOURCE
The wcscasecmp() function is the wide-character equivalent of the
strcasecmp(3) function. It compares the wide-character string
pointed to by s1 and the wide-character string pointed to by s2,
ignoring case differences (towupper(3), towlower(3)).
The wcsncasecmp() function is similar (the wide-character
equivalent of strncasecmp(3)), except that it compares no more
than n wide characters of s1 and s2.
The wcscasecmp() and wcsncasecmp() functions return an integer
less than, equal to, or greater than zero if s1 is, after ignoring
case, found to be less than, to match, or be greater than s2,
respectively.
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│ Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│ wcscasecmp(), wcsncasecmp() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
POSIX.1-2008.
glibc 2.1.
The behavior of wcscasecmp() depends on the LC_CTYPE category of
the current locale.
strcasecmp(3), wcscmp(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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2025-02-02. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
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man-pages@man7.org
Linux man-pages 6.10 2024-07-23 wcscasecmp(3)
Pages that refer to this page: strcasecmp(3), wcscmp(3), wcsncmp(3)
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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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