NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | VERSIONS | ATTRIBUTES | CONFORMING TO | EXAMPLE | SEE ALSO | COLOPHON

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

NAME         top

       mempcpy, wmempcpy  - copy memory area

SYNOPSIS         top

       #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         top

       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         top

       dest + n.

VERSIONS         top

       mempcpy() first appeared in glibc in version 2.1.

ATTRIBUTES         top

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

       ┌──────────────────────┬───────────────┬─────────┐
       │Interface             Attribute     Value   │
       ├──────────────────────┼───────────────┼─────────┤
       │mempcpy(), wmempcpy() │ Thread safety │ MT-Safe │
       └──────────────────────┴───────────────┴─────────┘

CONFORMING TO         top

       This function is a GNU extension.

EXAMPLE         top

       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         top

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

COLOPHON         top

       This page is part of release 4.08 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)