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7.4.3 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`.

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.