PROLOG¶

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.

NAME¶

memcpy - copy bytes in memory

SYNOPSIS¶

#include <string.h>

void *memcpy(void *restrict s1, const void *restrict s2, size_t n);

DESCRIPTION¶

The memcpy() function shall copy n bytes from the object pointed to by s2 into the object pointed to by s1. If copying takes place between objects that overlap, the behavior is undefined.

RETURN VALUE¶

The memcpy() 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¶

The memcpy() function does not check for the overflow of the receiving memory area.

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 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 original Standard can be obtained online at http://www.opengroup.org/unix/online.html .