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



NAME
       mempcpy, wmempcpy  - copy memory area

SYNOPSIS
       #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
       The  mempcpy()  function  is nearly identical to the memcpy() 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(1,8) 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 .

EXAMPLE
       void *
       combine (void *o1, size_t s1, void *o2, size_t s2) {
            void *result = malloc(s1 + s2);
            if(3,n) (result != NULL)
                 mempcpy(mempcpy(result, o1, s1), o2, s2);
            return result;
       }

CONFIRMING TO
       This function is a GNU extension.

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



GNU                               2003-11-11                        mempcpy(3)