1WCSCASECMP(3) Linux Programmer's Manual WCSCASECMP(3)
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6 wcscasecmp - compare two wide-character strings, ignoring case
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9 #include <wchar.h>
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11 int wcscasecmp(const wchar_t *s1, const wchar_t *s2);
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13 Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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15 wcscasecmp():
16 Since glibc 2.10:
17 _POSIX_C_SOURCE >= 200809L
18 Before glibc 2.10:
19 _GNU_SOURCE
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22 The wcscasecmp() function is the wide-character equivalent of the str‐
23 casecmp(3) function. It compares the wide-character string pointed to
24 by s1 and the wide-character string pointed to by s2, ignoring case
25 differences (towupper(3), towlower(3)).
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28 The wcscasecmp() function returns zero if the wide-character strings at
29 s1 and s2 are equal except for case distinctions. It returns a posi‐
30 tive integer if s1 is greater than s2, ignoring case. It returns a
31 negative integer if s1 is smaller than s2, ignoring case.
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34 The wcscasecmp() function is provided in glibc since version 2.1.
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37 For an explanation of the terms used in this section, see
38 attributes(7).
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40 ┌─────────────┬───────────────┬────────────────┐
41 │Interface │ Attribute │ Value │
42 ├─────────────┼───────────────┼────────────────┤
43 │wcscasecmp() │ Thread safety │ MT-Safe locale │
44 └─────────────┴───────────────┴────────────────┘
46 POSIX.1-2008. This function is not specified in POSIX.1-2001, and is
47 not widely available on other systems.
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50 The behavior of wcscasecmp() depends on the LC_CTYPE category of the
51 current locale.
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54 strcasecmp(3), wcscmp(3)
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57 This page is part of release 5.04 of the Linux man-pages project. A
58 description of the project, information about reporting bugs, and the
59 latest version of this page, can be found at
60 https://www.kernel.org/doc/man-pages/.
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64GNU 2016-03-15 WCSCASECMP(3)