v. func (v *Element) Square(x *Element) *Element { feSquare(v, x) return v } // Mult32 sets v = x * y, and returns v. func (v *Element) Mult32(x *Element, y uint32) *Element { x0lo, x0hi := mul51(x.l0, y) x1lo, x1hi := mul51(x.l1, y) x2lo, x2hi := mul51(x.l2, y) x3lo, x3hi := mul51(x.l3, y) x4lo, x4hi := mul51(x.l4, y) v.l0 = x0lo + 19*x4hi // carried over per the reduction identity v.l1 = x1lo + x0hi v.l2 = x2lo + x1hi v.l3 = x3lo + x2hi v.l4 = x4lo + x3hi // The hi portions are going to be only...