NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | VERSIONS | 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
       #include <string.h>

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

       #define _GNU_SOURCE
       #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.

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), feature_test_macros(7)

COLOPHON         top

       This page is part of release 3.23 of the Linux man-pages project.  A
       description of the project, and information about reporting bugs, can be found
       at http://www.kernel.org/doc/man-pages/.

GNU                                   2008-08-12                           MEMPCPY(3)