.. index:: pair: object; floating-point

.. c:type:: PyFloatObject
   This subtype of :c:type:`PyObject` represents a Python floating-point object.

.. c:var:: PyTypeObject PyFloat_Type
   This instance of :c:type:`PyTypeObject` represents the Python floating-point
   type.  This is the same object as :class:`float` in the Python layer.

.. c:function:: int PyFloat_Check(PyObject *p)
   Return true if its argument is a :c:type:`PyFloatObject` or a subtype of
   :c:type:`PyFloatObject`.  This function always succeeds.

.. c:function:: int PyFloat_CheckExact(PyObject *p)
   Return true if its argument is a :c:type:`PyFloatObject`, but not a subtype of
   :c:type:`PyFloatObject`.  This function always succeeds.

.. c:function:: PyObject* PyFloat_FromString(PyObject *str)
   Create a :c:type:`PyFloatObject` object based on the string value in *str*, or
   ``NULL`` on failure.

.. c:function:: PyObject* PyFloat_FromDouble(double v)
   Create a :c:type:`PyFloatObject` object from *v*, or ``NULL`` on failure.

.. c:function:: double PyFloat_AsDouble(PyObject *pyfloat)
   Return a C :c:expr:`double` representation of the contents of *pyfloat*.  If
   *pyfloat* is not a Python floating-point object but has a :meth:`~object.__float__`
   method, this method will first be called to convert *pyfloat* into a float.
   If :meth:`!__float__` is not defined then it falls back to :meth:`~object.__index__`.
   This method returns ``-1.0`` upon failure, so one should call
   :c:func:`PyErr_Occurred` to check for errors.
   .. versionchanged:: 3.8
      Use :meth:`~object.__index__` if available.

.. c:function:: double PyFloat_AS_DOUBLE(PyObject *pyfloat)
   Return a C :c:expr:`double` representation of the contents of *pyfloat*, but
   without error checking.

.. c:function:: PyObject* PyFloat_GetInfo(void)
   Return a structseq instance which contains information about the
   precision, minimum and maximum values of a float. It's a thin wrapper
   around the header file :file:`float.h`.

.. c:function:: double PyFloat_GetMax()
   Return the maximum representable finite float *DBL_MAX* as C :c:expr:`double`.

.. c:function:: double PyFloat_GetMin()
   Return the minimum normalized positive float *DBL_MIN* as C :c:expr:`double`.