size; i++ { xLimbs[i], c = bits.Add(xLimbs[i], yLimbs[i], c) } return } // sub computes x -= y. It returns the borrow of the subtraction. // // Both operands must have the same announced length. // //go:norace func (x *Nat) sub(y *Nat) (c uint) { // Eliminate bounds checks in the loop. size := len(x.limbs) xLimbs := x.limbs[:size] yLimbs := y.limbs[:size] for i := 0; i < size; i++ { xLimbs[i], c = bits.Sub(xLimbs[i], yLimbs[i], c) } return } // ShiftRightVarTime sets x = x >> n. // // The announced length...

    Yet you turned a back-somersault in at the door--
      Pray, what is the reason of that?'

    `In my youth,' said the sage, as he shook his grey locks,
      `I kept all my limbs very supple
    By the use of this ointment--one shilling the box--
      Allow me to sell you a couple?'

    `You are old,' said the youth, `and your jaws are too weak
      For anything tougher than suet;