oltolm

# from https://forum.nim-lang.org/t/1188#7366 by Jehan
# most of the time only the dereference operator is needed, import it like this:
# from ptrmath import `[]`

template `+`*[T](p: ptr T, off: int): ptr T =
  cast[ptr type(p[])](cast[ByteAddress](p) +% off * sizeof(p[]))

template `+=`*[T](p: ptr T, off: int) =
  p = p + off