}

	return p, nil
}

var p521GeneratorTable *[p521ElementLength * 2]p521Table
var p521GeneratorTableOnce sync.Once

// generatorTable returns a sequence of p521Tables. The first table contains
// multiples of G. Each successive table is the previous table doubled four
// times.
func (p *P521Point) generatorTable() *[p521ElementLength * 2]p521Table {
	p521GeneratorTableOnce.Do(func() {