Edit File: float.txt
.. highlightlang:: c .. _floatobjects: Floating Point Objects ---------------------- .. index:: object: floating point .. ctype:: PyFloatObject This subtype of :ctype:`PyObject` represents a Python floating point object. .. cvar:: PyTypeObject PyFloat_Type .. index:: single: FloatType (in modules types) This instance of :ctype:`PyTypeObject` represents the Python floating point type. This is the same object as ``float`` and ``types.FloatType``. .. cfunction:: int PyFloat_Check(PyObject *p) Return true if its argument is a :ctype:`PyFloatObject` or a subtype of :ctype:`PyFloatObject`. .. versionchanged:: 2.2 Allowed subtypes to be accepted. .. cfunction:: int PyFloat_CheckExact(PyObject *p) Return true if its argument is a :ctype:`PyFloatObject`, but not a subtype of :ctype:`PyFloatObject`. .. versionadded:: 2.2 .. cfunction:: PyObject* PyFloat_FromString(PyObject *str, char **pend) Create a :ctype:`PyFloatObject` object based on the string value in *str*, or *NULL* on failure. The *pend* argument is ignored. It remains only for backward compatibility. .. cfunction:: PyObject* PyFloat_FromDouble(double v) Create a :ctype:`PyFloatObject` object from *v*, or *NULL* on failure. .. cfunction:: double PyFloat_AsDouble(PyObject *pyfloat) Return a C :ctype:`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. .. cfunction:: double PyFloat_AS_DOUBLE(PyObject *pyfloat) Return a C :ctype:`double` representation of the contents of *pyfloat*, but without error checking. .. cfunction:: 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`. .. versionadded:: 2.6 .. cfunction:: double PyFloat_GetMax() Return the maximum representable finite float *DBL_MAX* as C :ctype:`double`. .. versionadded:: 2.6 .. cfunction:: double PyFloat_GetMin() Return the minimum normalized positive float *DBL_MIN* as C :ctype:`double`. .. versionadded:: 2.6 .. cfunction:: int PyFloat_ClearFreeList() Clear the float free list. Return the number of items that could not be freed. .. versionadded:: 2.6
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