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 (towup-
per(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.
VERSIONS
The wcsncasecmp() function is provided since glibc 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
┌─────────────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├─────────────────────────────────────┼───────────────┼────────────────┤
│wcsncasecmp() │ Thread safety │ MT-Safe locale │
└─────────────────────────────────────┴───────────────┴────────────────┘
STANDARDS
POSIX.1-2008. This function is not specified in POSIX.1-2001, and is
not widely available on other systems.
NOTES
The behavior of wcsncasecmp() depends on the LC_CTYPE category of the
current locale.
SEE ALSO
strncasecmp(3), wcsncmp(3)
Linux man-pages 6.03 2022-12-15 wcsncasecmp(3)
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