Class int_

dlib/external/pybind11/include/pybind11/pytypes.h:1810–1843

PYBIND11_NAMESPACE_END(detail)

class int_ : public object {
public:
    PYBIND11_OBJECT_CVT(int_, object, PYBIND11_LONG_CHECK, PyNumber_Long)
    int_() : object(PyLong_FromLong(0), stolen_t{}) {}
    // Allow implicit conversion from C++ integral types:
    template <typename T, detail::enable_if_t<std::is_integral<T>::value, int> = 0>
    // NOLINTNEXTLINE(google-explicit-constructor)
    int_(T value) {
        if (sizeof(T) <= sizeof(long)) {
            if (std::is_signed<T>::value) {
                m_ptr = PyLong_FromLong((long) value);
            } else {
                m_ptr = PyLong_FromUnsignedLong((unsigned long) value);
            }
        } else {
            if (std::is_signed<T>::value) {
                m_ptr = PyLong_FromLongLong((long long) value);
            } else {
                m_ptr = PyLong_FromUnsignedLongLong((unsigned long long) value);
            }
        }
        if (!m_ptr) {
            pybind11_fail("Could not allocate int object!");
        }
    }

    template <typename T, detail::enable_if_t<std::is_integral<T>::value, int> = 0>
    // NOLINTNEXTLINE(google-explicit-constructor)
    operator T() const {
        return std::is_unsigned<T>::value  ? detail::as_unsigned<T>(m_ptr)
               : sizeof(T) <= sizeof(long) ? (T) PyLong_AsLong(m_ptr)
                                           : (T) PYBIND11_LONG_AS_LONGLONG(m_ptr);
    }
};

class float_ : public object {
public: