Function round05Up

round.go:171–179

(result *BigInt, neg bool, half int)

}

func round05Up(result *BigInt, neg bool, half int) bool {
	var z BigInt
	z.Rem(result, bigFive)
	if z.Sign() == 0 {
		return true
	}
	z.Rem(result, bigTen)
	return z.Sign() == 0
}

func roundHalfUp(result *BigInt, neg bool, half int) bool {
	return half >= 0