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.. highlightlang:: c .. _floatobjects: Floating Point Objects ---------------------- .. index:: 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`. .. 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`. .. 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:type:`double` representation of the contents of *pyfloat*. If *pyfloat* is not a Python floating point object but has a :meth:`__float__` method, this method will first be called to convert *pyfloat* into a float. This method returns ``-1.0`` upon failure, so one should call :c:func:`PyErr_Occurred` to check for errors. .. c:function:: double PyFloat_AS_DOUBLE(PyObject *pyfloat) Return a C :c:type:`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:type:`double`. .. c:function:: double PyFloat_GetMin() Return the minimum normalized positive float *DBL_MIN* as C :c:type:`double`. .. c:function:: int PyFloat_ClearFreeList() Clear the float free list. Return the number of items that could not be freed.