Function altSetBit

bigint_test.go:1871–1881

(z *BigInt, x *BigInt, i int, b uint)

}

func altSetBit(z *BigInt, x *BigInt, i int, b uint) *BigInt {
	one := NewBigInt(1)
	m := one.Lsh(one, uint(i))
	switch b {
	case 1:
		return z.Or(x, m)
	case 0:
		return z.AndNot(x, m)
	}
	panic("set bit is not 0 or 1")
}

func testBitset(t *testing.T, x *BigInt) {
	n := x.BitLen()