// license that can be found in the LICENSE file.

package edwards25519

import (
	"crypto/internal/edwards25519/field"
	"encoding/hex"
	"internal/testenv"
	"reflect"
	"testing"
)

var B = NewGeneratorPoint()
var I = NewIdentityPoint()

func checkOnCurve(t *testing.T, points ...*Point) {
	t.Helper()
	for i, p := range points {
		var XX, YY, ZZ, ZZZZ field.Element
		XX.Square(&p.x)
		YY.Square(&p.y)

// from 256i * basepoint. It is precomputed the first time it's used.
func basepointTable() *[32]affineLookupTable {
	basepointTablePrecomp.initOnce.Do(func() {
		p := NewGeneratorPoint()
		for i := 0; i < 32; i++ {
			basepointTablePrecomp.table[i].FromP3(p)
			for j := 0; j < 8; j++ {
				p.Add(p, p)
			}
		}
	})
	return &basepointTablePrecomp.table
}

	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66})

// NewGeneratorPoint returns a new Point set to the canonical generator.
func NewGeneratorPoint() *Point {
	return new(Point).Set(generator)
}

func (v *projCached) Zero() *projCached {
	v.YplusX.One()
	v.YminusX.One()
	v.Z.One()
	v.T2d.Zero()
	return v
}