wcsncmp(3p) [posix man page]
WCSNCMP(3P) POSIX Programmer's Manual WCSNCMP(3P) PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
wcsncmp -- compare part of two wide-character strings SYNOPSIS
#include <wchar.h> int wcsncmp(const wchar_t *ws1, const wchar_t *ws2, size_t n); DESCRIPTION
The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard. The wcsncmp() function shall compare not more than n wide-character codes (wide-character codes that follow a null wide-character code are not compared) from the array pointed to by ws1 to the array pointed to by ws2. The sign of a non-zero return value shall be determined by the sign of the difference between the values of the first pair of wide-charac- ter codes that differ in the objects being compared. RETURN VALUE
Upon successful completion, wcsncmp() shall return an integer greater than, equal to, or less than 0, if the possibly null-terminated array pointed to by ws1 is greater than, equal to, or less than the possibly null-terminated array pointed to by ws2, respectively. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
wcscasecmp(), wcscmp() The Base Definitions volume of POSIX.1-2008, <wchar.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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 Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/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 2013 WCSNCMP(3P)
Check Out this Related Man Page
WCSNCPY(3P) POSIX Programmer's Manual WCSNCPY(3P) PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
wcpncpy, wcsncpy -- copy a fixed-size wide-character string, returning a pointer to its end SYNOPSIS
#include <wchar.h> wchar_t *wcpncpy(wchar_t restrict *ws1, const wchar_t *restrict ws2, size_t n); wchar_t *wcsncpy(wchar_t *restrict ws1, const wchar_t *restrict ws2, size_t n); DESCRIPTION
For wcsncpy(): The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard. The wcpncpy() and wcsncpy() functions shall copy not more than n wide-character codes (wide-character codes that follow a null wide-charac- ter code are not copied) from the array pointed to by ws2 to the array pointed to by ws1. If copying takes place between objects that overlap, the behavior is undefined. If the array pointed to by ws2 is a wide-character string that is shorter than n wide-character codes, null wide-character codes shall be appended to the copy in the array pointed to by ws1, until n wide-character codes in all are written. RETURN VALUE
If any null wide-character codes were written into the destination, the wcpncpy() function shall return the address of the first such null wide-character code. Otherwise, it shall return &ws1[n]. The wcsncpy() function shall return ws1. No return values are reserved to indicate an error. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
If there is no null wide-character code in the first n wide-character codes of the array pointed to by ws2, the result is not null-termi- nated. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
strncpy(), wcscpy() The Base Definitions volume of POSIX.1-2008, <wchar.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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 Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/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 2013 WCSNCPY(3P)