void * memcpy(void * dst, const void * src, size_t length)
{
    size_t x = length / 4;
    size_t y = length % 4;
    size_t i;

    unsigned long * mSrc, * mDst;
    
    mSrc = (unsigned long *) src;
    mDst = (unsigned long *) dst;

    for (i = 0; i < x; i++)
	((unsigned long *)dst)[i] = ((unsigned long *)src)[i];

    for (i = 0; i < y; i++)
	((char *) dst)[length-y+i] = ((char *) dst)[lenght-y+i];
    
    return dst;
}