Floating Point Objects¶
-
PyTypeObject
PyFloat_Type
¶ This instance of
PyTypeObject
represents the Python floating point type. This is the same object asfloat
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.
Create a
PyFloatObject
object based on the string value in str, orNULL
on failure.
-
PyObject*
PyFloat_FromDouble
(double v)¶ - Return value: New reference.
Create a
PyFloatObject
object from v, orNULL
on failure.
-
double
PyFloat_AsDouble
(PyObject *pyfloat)¶ 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.Zmienione w wersji 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.
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
()¶ Return the maximum representable finite float DBL_MAX as C
double
.
-
double
PyFloat_GetMin
()¶ Return the minimum normalized positive float DBL_MIN as C
double
.