wcscasecmp - compare two wide-character strings, ignoring case
#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:
_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 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.
The wcscasecmp() function is provided in glibc since version 2.1.
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
wcscasecmp() | Thread safety | MT-Safe locale |
POSIX.1-2008. This function is not specified in POSIX.1-2001, and is not widely available on other systems.
The behavior of wcscasecmp() depends on the LC_CTYPE category of the current locale.
strcasecmp(3), wcscmp(3)
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