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Python

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Floating Point Objects — Python v2.6.2 documentation

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 float and types.FloatType.

int PyFloat_Check(PyObject *p)¶

Return true if its argument is a PyFloatObject or a subtype of PyFloatObject.

Changed in version 2.2: Allowed subtypes to be accepted.

int PyFloat_CheckExact(PyObject *p)¶

Return true if its argument is a PyFloatObject, but not a subtype of PyFloatObject.

New in version 2.2.

PyObject* PyFloat_FromString(PyObject *str, char **pend)¶
Return value: New reference.

Create a PyFloatObject object based on the string value in str, or NULL on failure. The pend argument is ignored. It remains only for backward compatibility.

PyObject* PyFloat_FromDouble(double v)¶
Return value: New reference.

Create a PyFloatObject object from v, or NULL 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.
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 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.

New in version 2.6.

double PyFloat_GetMax(void)¶

Return the maximum representable finite float DBL_MAX as C double.

New in version 2.6.

double PyFloat_GetMin(void)¶

Return the minimum normalized positive float DBL_MIN as C double.

New in version 2.6.

int PyFloat_ClearFreeList(void)¶

Clear the float free list. Return the number of items that could not be freed.

New in version 2.6.

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