wcsncasecmp(3)

1WCSNCASECMP(3)             Linux Programmer's Manual            WCSNCASECMP(3)
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NAME

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

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

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

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

CONFORMING TO

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

53       The behavior of wcsncasecmp() depends on the LC_CTYPE category  of  the
54       current locale.
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COLOPHON

60       This  page  is  part of release 4.16 of the Linux man-pages project.  A
61       description of the project, information about reporting bugs,  and  the
62       latest     version     of     this    page,    can    be    found    at
63       https://www.kernel.org/doc/man-pages/.
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67GNU                               2016-03-15                    WCSNCASECMP(3)