1WCSNCASECMP(3)             Linux Programmer's Manual            WCSNCASECMP(3)
2
3
4

NAME

6       wcsncasecmp  -  compare two fixed-size wide-character strings, ignoring
7       case
8

SYNOPSIS

10       #include <wchar.h>
11
12       int wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n);
13
14   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
15
16       wcsncasecmp():
17           Since glibc 2.10:
18               _POSIX_C_SOURCE >= 200809L
19           Before glibc 2.10:
20               _GNU_SOURCE
21

DESCRIPTION

23       The wcsncasecmp() function is  the  wide-character  equivalent  of  the
24       strncasecmp(3) function.  It compares the wide-character string pointed
25       to by s1 and the wide-character string pointed to by s2, but at most  n
26       wide  characters  from  each  string, ignoring case differences (towup‐
27       per(3), towlower(3)).
28

RETURN VALUE

30       The wcsncasecmp() function returns zero if the  wide-character  strings
31       at  s1 and s2, truncated to at most length n, are equal except for case
32       distinctions.  It returns a positive integer if truncated s1 is greater
33       than  truncated  s2,  ignoring  case.  It returns a negative integer if
34       truncated s1 is smaller than truncated s2, ignoring case.
35

VERSIONS

37       The wcsncasecmp() function is provided in glibc since version 2.1.
38

ATTRIBUTES

40       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
41       tributes(7).
42
43       ┌─────────────────────────────────────┬───────────────┬────────────────┐
44       │Interface                            │ Attribute     │ Value          │
45       ├─────────────────────────────────────┼───────────────┼────────────────┤
46       │wcsncasecmp()                        │ Thread safety │ MT-Safe locale │
47       └─────────────────────────────────────┴───────────────┴────────────────┘
48

CONFORMING TO

50       POSIX.1-2008.   This  function is not specified in POSIX.1-2001, and is
51       not widely available on other systems.
52

NOTES

54       The behavior of wcsncasecmp() depends on the LC_CTYPE category  of  the
55       current locale.
56

SEE ALSO

58       strncasecmp(3), wcsncmp(3)
59

COLOPHON

61       This  page  is  part of release 5.13 of the Linux man-pages project.  A
62       description of the project, information about reporting bugs,  and  the
63       latest     version     of     this    page,    can    be    found    at
64       https://www.kernel.org/doc/man-pages/.
65
66
67
68GNU                               2021-03-22                    WCSNCASECMP(3)
Impressum