suse man page for strncpy

STRNCPY(3P)						     POSIX Programmer's Manual						       STRNCPY(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
       strncpy - copy part of a string

SYNOPSIS
       #include <string.h>

       char *strncpy(char *restrict s1, const char *restrict s2, size_t n);

DESCRIPTION
       The strncpy() function shall copy not more than n bytes (bytes that follow a null byte are not copied) from the array pointed to by  s2	to
       the array pointed to by s1.  If copying takes place between objects that overlap, the behavior is undefined.

       If the array pointed to by s2 is a string that is shorter than n bytes, null bytes shall be appended to the copy in the array pointed to by
       s1, until n bytes in all are written.

RETURN VALUE
       The strncpy() function shall return s1; no return value is reserved to indicate an error.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       Character movement is performed differently in different implementations.  Thus, overlapping moves may yield surprises.

       If there is no null byte in the first n bytes of the array pointed to by s2, the result is not null-terminated.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       strcpy(), the Base Definitions volume of IEEE Std 1003.1-2001, <string.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .

IEEE
/The Open Group						       2003							       STRNCPY(3P)