code: function(dest, ptr, src, srcptr, len) {
          var i;
          for (i=0;i<len;i++) {
              dest[ptr+i]=src[srcptr+i];
          }
          return true;
      }
docs: Replacement c function
  Obviously can't work like c does, so we've added an "offset" param so you could do memcpy(dest+1, src, len) as memcpy(dest, 1, src, len)
  Also only works on arrays