mempcpy

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;
}

CONFIRMING TO

This function is a GNU extension.