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Name

wcscasecmp - compare two wide-character strings, ignoring case

Synopsis


#include <wchar.h>
int wcscasecmp(const wchar_t *s1, const wchar_t *s2);

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

wcscasecmp():

Since glibc 2.10:
_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
Before glibc 2.10:
_GNU_SOURCE

Description

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) ).

Return Value

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

Versions

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

Attributes

Multithreading (see pthreads(7) )

The wcscasecmp() function is thread-safe with exceptions. It can be safely used in multithreaded applications, as long as setlocale(3) is not called to change the locale during its execution.

Conforming to

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

Notes

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

See Also

strcasecmp(3) , wcscmp(3)

Colophon

This page is part of release 3.78 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.

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