void __near * __far memcpy(void __near *s1, const void __near *s2, size_t n);
void __far * __far _COM_memcpy_ff(void __far *s1, const void __far *s2, size_t n);
This function copies the n number of characters from a object indicated by s2 to a object indicated by s1.
The operation is undefined if the copy source and copy destination areas overlap.