Function MultiplicationOverflow

src/test/fuzz/util.h:214–234

template <typename T>
[[nodiscard]] bool MultiplicationOverflow(const T i, const T j) noexcept
{
    static_assert(std::is_integral<T>::value, "Integral required.");
    if (std::numeric_limits<T>::is_signed) {
        if (i > 0) {
            if (j > 0) {
                return i > (std::numeric_limits<T>::max() / j);
            } else {
                return j < (std::numeric_limits<T>::min() / i);
            }
        } else {
            if (j > 0) {
                return i < (std::numeric_limits<T>::min() / j);
            } else {
                return i != 0 && (j < (std::numeric_limits<T>::max() / i));
            }
        }
    } else {
        return j != 0 && i > std::numeric_limits<T>::max() / j;
    }
}

[[nodiscard]] bool ContainsSpentInput(const CTransaction& tx, const CCoinsViewCache& inputs) noexcept;