Function altBit

bigint_test.go:1862–1869

(x *BigInt, i int)

}

func altBit(x *BigInt, i int) uint {
	z := new(BigInt).Rsh(x, uint(i))
	z = z.And(z, NewBigInt(1))
	if z.Cmp(new(BigInt)) != 0 {
		return 1
	}
	return 0
}

func altSetBit(z *BigInt, x *BigInt, i int, b uint) *BigInt {
	one := NewBigInt(1)