|
HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|
|
PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
|
|
|
WCSCASECMP(3P) POSIX Programmer's Manual WCSCASECMP(3P)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
wcscasecmp, wcscasecmp_l, wcsncasecmp, wcsncasecmp_l — case-
insensitive wide-character string comparison
#include <wchar.h>
int wcscasecmp(const wchar_t *ws1, const wchar_t *ws2);
int wcscasecmp_l(const wchar_t *ws1, const wchar_t *ws2,
locale_t locale);
int wcsncasecmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
int wcsncasecmp_l(const wchar_t *ws1, const wchar_t *ws2,
size_t n, locale_t locale);
The wcscasecmp() and wcsncasecmp() functions are the wide-
character equivalent of the strcasecmp() and strncasecmp()
functions, respectively.
The wcscasecmp() and wcscasecmp_l() functions shall compare,
while ignoring differences in case, the wide-character string
pointed to by ws1 to the wide-character string pointed to by ws2.
The wcsncasecmp() and wcsncasecmp_l() functions shall compare,
while ignoring differences in case, not more than n wide-
characters from the wide-character string pointed to by ws1 to
the wide-character string pointed to by ws2.
The wcscasecmp() and wcsncasecmp() functions use the current
locale to determine the case of the wide characters.
The wcscasecmp_l() and wcsncasecmp_l() functions use the locale
represented by locale to determine the case of the wide
characters.
When the LC_CTYPE category of the locale being used is from the
POSIX locale, these functions shall behave as if the wide-
character strings had been converted to lowercase and then a
comparison of wide-character codes performed. Otherwise, the
results are unspecified.
The information for wcscasecmp_l() and wcsncasecmp_l() about the
case of the characters comes from the locale represented by
locale.
The behavior is undefined if the locale argument to
wcscasecmp_l() or wcsncasecmp_l() is the special locale object
LC_GLOBAL_LOCALE or is not a valid locale object handle.
Upon completion, the wcscasecmp() and wcscasecmp_l() functions
shall return an integer greater than, equal to, or less than 0 if
the wide-character string pointed to by ws1 is, ignoring case,
greater than, equal to, or less than the wide-character string
pointed to by ws2, respectively.
Upon completion, the wcsncasecmp() and wcsncasecmp_l() functions
shall return an integer greater than, equal to, or less than 0 if
the possibly null wide-character terminated string pointed to by
ws1 is, ignoring case, greater than, equal to, or less than the
possibly null wide-character terminated string pointed to by ws2,
respectively.
No return values are reserved to indicate an error.
No errors are defined.
The following sections are informative.
None.
None.
None.
None.
strcasecmp(3p), wcscmp(3p), wcsncmp(3p)
The Base Definitions volume of POSIX.1‐2017, wchar.h(0p)
Portions of this text are reprinted and reproduced in electronic
form from IEEE Std 1003.1-2017, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The
Open Group Base Specifications Issue 7, 2018 Edition, Copyright
(C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any
discrepancy between this version and the original IEEE and The
Open Group Standard, the original IEEE and The Open Group
Standard is the referee document. The original Standard can be
obtained online at http://www.opengroup.org/unix/online.html .
Any typographical or formatting errors that appear in this page
are most likely to have been introduced during the conversion of
the source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2017 WCSCASECMP(3P)
Pages that refer to this page: wchar.h(0p), strcasecmp(3p), wcscmp(3p), wcsncasecmp(3p), wcsncmp(3p)
|
HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|