MEMPCPY(3)		   Linux Programmer's Manual		    MEMPCPY(3)



NAME
       mempcpy, wmempcpy  - copy memory area

SYNOPSIS
       #define _GNU_SOURCE	   /* See feature_test_macros(7) */
       #include <string.h>

       void *mempcpy(void *dest, const void *src, size_t n);

       #define _GNU_SOURCE	   /* See feature_test_macros(7) */
       #include <wchar.h>

       wchar_t *wmempcpy(wchar_t *dest, const wchar_t *src, size_t n);

DESCRIPTION
       The  mempcpy()  function is nearly identical to the memcpy(3) function.
       It copies n bytes from the object beginning  at	src  into  the	object
       pointed	to  by	dest.	But  instead of returning the value of dest it
       returns a pointer to the byte following the last written byte.

       This function is useful in situations where a number of	objects	 shall
       be copied to consecutive memory positions.

       The  wmempcpy()	function is identical but takes wchar_t type arguments
       and copies n wide characters.

RETURN VALUE
       dest + n.

VERSIONS
       mempcpy() first appeared in glibc in version 2.1.

ATTRIBUTES
       For  an	explanation  of	 the  terms  used   in	 this	section,   see
       attributes(7).

       +----------------------+---------------+---------+
       |Interface	      | Attribute     | Value	|
       +----------------------+---------------+---------+
       |mempcpy(), wmempcpy() | Thread safety | MT-Safe |
       +----------------------+---------------+---------+
CONFORMING TO
       This function is a GNU extension.

EXAMPLE
       void *
       combine(void *o1, size_t s1, void *o2, size_t s2)
       {
	   void *result = malloc(s1 + s2);
	   if (result != NULL)
	       mempcpy(mempcpy(result, o1, s1), o2, s2);
	   return result;
       }

SEE ALSO
       memccpy(3), memcpy(3), memmove(3), wmemcpy(3)

COLOPHON
       This  page  is  part of release 4.10 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest	  version     of     this    page,    can    be	   found    at
       https://www.kernel.org/doc/man-pages/.



GNU				  2015-03-02			    MEMPCPY(3)