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 of x is unchanged. // //go:norace func (x *Nat) ShiftRightVarTime(n uint) *Nat { // Eliminate bounds checks in the loop. size := len(x.limbs) xLimbs := x.limbs[:size] shift := int(n % _W) shiftLimbs := int(n / _W) var shiftedLimbs []uint if shiftLimbs <...