t, and returns e. func (e *P384Element) Square(t *P384Element) *P384Element { p384Square(&e.x, &t.x) return e } // Select sets v to a if cond == 1, and to b if cond == 0. func (v *P384Element) Select(a, b *P384Element, cond int) *P384Element { p384Selectznz((*p384UntypedFieldElem)(&v.x), p384Uint1(cond), (*p384UntypedFieldElem)(&b.x), (*p384UntypedFieldElem)(&a.x)) return v } func p384InvertEndianness(v []byte) { for i := 0; i < len(v)/2; i++ { v[i], v[len(v)-1-i] = v[len(v)-1-i], v[i] } } golang...