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Python/C API Reference Manual

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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.