source: buchla-68k/orig/CLIBRARY/MEMCPY.C

/*
   =============================================================================
        memcpy.c -- copy memory
        Version 1 -- 1987-06-12

        Copy s2 to s1, always copy n bytes.
        Return s1.
   =============================================================================
 */

char *
memcpy(s1, s2, n)
register char *s1, *s2;
register int n;
{
        register char *os1 = s1;

        while (--n >= 0)
                *s1++ = *s2++;
        return (os1);
}