wcscasecmp - compare two wide-character strings, ignoring case

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

       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)).

       glibc 2.1.

       Standard C library (libc, -lc)

       wcscasecmp - compare two wide-character strings, ignoring case

       The behavior of wcscasecmp() depends on the LC_CTYPE category of the current locale.

       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.

strcasecmp(3), wcscmp(3)

Linux man-pages 6.9.1                              2024-05-02                                      wcscasecmp(3)

       POSIX.1-2008.

#include<wchar.h>intwcscasecmp(constwchar_t*s1,constwchar_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