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Linux 2.6 - man page for strncpy (linux section 3posix)

STRNCPY(P)			    POSIX Programmer's Manual			       STRNCPY(P)

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,  overlap-
       ping 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 Technology -- 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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				       STRNCPY(P)


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