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 4.15 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/.