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7.2.3 Floating Point Objects

`PyFloatObject`
  This subtype of `PyObject` represents a Python floating point object.

PyTypeObject `PyFloat_Type`
  This instance of `PyTypeObject` represents the Python floating point type. This is the same object as `types.FloatType`.

int `PyFloat_Check`(PyObject *p)
  Returns true if its argument is a `PyFloatObject` or a subtype of `PyFloatObject`. Changed in version 2.2: Allowed subtypes to be accepted.

int `PyFloat_CheckExact`(PyObject *p)
  Returns true if its argument is a `PyFloatObject`, but not a subtype of `PyFloatObject`. New in version 2.2.

PyObject* `PyFloat_FromDouble`(double v)
  Return value: New reference.
  Creates a `PyFloatObject` object from v, or `NULL` on failure.

double `PyFloat_AsDouble`(PyObject *pyfloat)
  Returns a C `double` representation of the contents of pyfloat.

double `PyFloat_AS_DOUBLE`(PyObject *pyfloat)
  Returns a C `double` representation of the contents of pyfloat, but without error checking.