Floating Point Objects — Python 3.10.17 documentation (original) (raw)

type PyFloatObject¶

This subtype of PyObject represents a Python floating point object.

PyTypeObject PyFloat_Type¶

Part of the Stable ABI.

This instance of PyTypeObject represents the Python floating point type. This is the same object as float in the Python layer.

int PyFloat_Check(PyObject *p)¶

Return true if its argument is a PyFloatObject or a subtype ofPyFloatObject. This function always succeeds.

int PyFloat_CheckExact(PyObject *p)¶

Return true if its argument is a PyFloatObject, but not a subtype ofPyFloatObject. This function always succeeds.

PyObject *PyFloat_FromString(PyObject *str)¶

Return value: New reference. Part of the Stable ABI.

Create a PyFloatObject object based on the string value in str, orNULL on failure.

PyObject *PyFloat_FromDouble(double v)¶

Return value: New reference. Part of the Stable ABI.

Create a PyFloatObject object from v, or NULL on failure.

double PyFloat_AsDouble(PyObject *pyfloat)¶

Part of the Stable ABI.

Return a C double representation of the contents of pyfloat. If_pyfloat_ is not a Python floating point object but has a __float__()method, this method will first be called to convert pyfloat into a float. If __float__() is not defined then it falls back to __index__(). This method returns -1.0 upon failure, so one should callPyErr_Occurred() to check for errors.

Changed in version 3.8: Use __index__() if available.

double PyFloat_AS_DOUBLE(PyObject *pyfloat)¶

Return a C double representation of the contents of pyfloat, but without error checking.

PyObject *PyFloat_GetInfo(void)¶

Return value: New reference. Part of the Stable ABI.

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 float.h.

double PyFloat_GetMax()¶

Part of the Stable ABI.

Return the maximum representable finite float DBL_MAX as C double.

double PyFloat_GetMin()¶

Part of the Stable ABI.

Return the minimum normalized positive float DBL_MIN as C double.