memmove(3posix) [posix man page]
MEMMOVE(P) POSIX Programmer's Manual MEMMOVE(P) NAME
memmove - copy bytes in memory with overlapping areas SYNOPSIS
#include <string.h> void *memmove(void *s1, const void *s2, size_t n); DESCRIPTION
The memmove() function shall copy n bytes from the object pointed to by s2 into the object pointed to by s1. Copying takes place as if the n bytes from the object pointed to by s2 are first copied into a temporary array of n bytes that does not overlap the objects pointed to by s1 and s2, and then the n bytes from the temporary array are copied into the object pointed to by s1. RETURN VALUE
The memmove() 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
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
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 MEMMOVE(P)
Check Out this Related Man Page
BCOPY(3P) POSIX Programmer's Manual BCOPY(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
bcopy - memory operations (LEGACY) SYNOPSIS
#include <strings.h> void bcopy(const void *s1, void *s2, size_t n); DESCRIPTION
The bcopy() function shall copy n bytes from the area pointed to by s1 to the area pointed to by s2. The bytes are copied correctly even if the area pointed to by s1 overlaps the area pointed to by s2. RETURN VALUE
The bcopy() function shall not return a value. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
The memmove() function is preferred over this function. The following are approximately equivalent (note the order of the arguments): bcopy(s1,s2,n) ~= memmove(s2,s1,n) For maximum portability, it is recommended to replace the function call to bcopy() as follows: #define bcopy(b1,b2,len) (memmove((b2), (b1), (len)), (void) 0) RATIONALE
None. FUTURE DIRECTIONS
This function may be withdrawn in a future version. SEE ALSO
memmove(), the Base Definitions volume of IEEE Std 1003.1-2001, <strings.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 BCOPY(3P)