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 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 (result != NULL)
mempcpy(mempcpy(result, o1, s1), o2, s2);
return result;
}
CONFORMING TO
This function is a GNU extension.
SEE ALSOmemccpy(3), memcpy(3), memmove(3), wmemcpy(3)GNU 2003-11-11 mempcpy(3)
