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svn+ssh://pythondev@svn.python.org/python/trunk ........ r74074 | georg.brandl | 2009-07-18 05:03:10 -0400 (Sat, 18 Jul 2009) | 1 line #6513: fix example code: warning categories are classes, not instances. ........ r74077 | georg.brandl | 2009-07-18 05:43:40 -0400 (Sat, 18 Jul 2009) | 1 line #6489: fix an ambiguity in getiterator() documentation. ........ r74111 | benjamin.peterson | 2009-07-20 09:30:10 -0400 (Mon, 20 Jul 2009) | 1 line remove docs for deprecated -p option ........ r74188 | benjamin.peterson | 2009-07-23 10:25:31 -0400 (Thu, 23 Jul 2009) | 1 line use bools ........ r74192 | georg.brandl | 2009-07-24 12:28:38 -0400 (Fri, 24 Jul 2009) | 1 line Fix arg types of et#. ........ r74193 | georg.brandl | 2009-07-24 12:46:38 -0400 (Fri, 24 Jul 2009) | 1 line Dont put "void" in signature for nullary functions. ........ r74200 | georg.brandl | 2009-07-25 09:02:15 -0400 (Sat, 25 Jul 2009) | 1 line #6571: add index entries for more operators. ........ r74252 | georg.brandl | 2009-07-29 12:06:31 -0400 (Wed, 29 Jul 2009) | 1 line #6593: fix link targets. ........ r74253 | georg.brandl | 2009-07-29 12:09:17 -0400 (Wed, 29 Jul 2009) | 1 line #6591: add reference to ioctl in fcntl module for platforms other than Windows. ........ r74258 | georg.brandl | 2009-07-29 12:57:05 -0400 (Wed, 29 Jul 2009) | 1 line Add a link to readline, and mention IPython and bpython. ........ r74259 | georg.brandl | 2009-07-29 13:07:21 -0400 (Wed, 29 Jul 2009) | 1 line Fix some markup and small factual glitches found by M. Markert. ........ r74260 | georg.brandl | 2009-07-29 13:15:20 -0400 (Wed, 29 Jul 2009) | 1 line Fix a few markup glitches. ........ r74261 | georg.brandl | 2009-07-29 13:50:25 -0400 (Wed, 29 Jul 2009) | 1 line Rewrite the section about classes a bit; mostly tidbits, and a larger update to the section about "private" variables to reflect the Pythonic consensus better. ........
79 lines
2.1 KiB
ReStructuredText
79 lines
2.1 KiB
ReStructuredText
.. highlightlang:: c
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.. _floatobjects:
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Floating Point Objects
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----------------------
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.. index:: object: floating point
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.. ctype:: PyFloatObject
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This subtype of :ctype:`PyObject` represents a Python floating point object.
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.. cvar:: PyTypeObject PyFloat_Type
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.. index:: single: FloatType (in modules types)
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This instance of :ctype:`PyTypeObject` represents the Python floating point
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type. This is the same object as ``float`` and ``types.FloatType``.
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.. cfunction:: int PyFloat_Check(PyObject *p)
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Return true if its argument is a :ctype:`PyFloatObject` or a subtype of
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:ctype:`PyFloatObject`.
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.. cfunction:: int PyFloat_CheckExact(PyObject *p)
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Return true if its argument is a :ctype:`PyFloatObject`, but not a subtype of
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:ctype:`PyFloatObject`.
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.. cfunction:: PyObject* PyFloat_FromString(PyObject *str)
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Create a :ctype:`PyFloatObject` object based on the string value in *str*, or
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*NULL* on failure.
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.. cfunction:: PyObject* PyFloat_FromDouble(double v)
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Create a :ctype:`PyFloatObject` object from *v*, or *NULL* on failure.
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.. cfunction:: double PyFloat_AsDouble(PyObject *pyfloat)
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Return a C :ctype:`double` representation of the contents of *pyfloat*. If
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*pyfloat* is not a Python floating point object but has a :meth:`__float__`
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method, this method will first be called to convert *pyfloat* into a float.
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.. cfunction:: double PyFloat_AS_DOUBLE(PyObject *pyfloat)
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Return a C :ctype:`double` representation of the contents of *pyfloat*, but
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without error checking.
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.. cfunction:: PyObject* PyFloat_GetInfo(void)
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Return a structseq instance which contains information about the
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precision, minimum and maximum values of a float. It's a thin wrapper
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around the header file :file:`float.h`.
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.. cfunction:: double PyFloat_GetMax()
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Return the maximum representable finite float *DBL_MAX* as C :ctype:`double`.
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.. cfunction:: double PyFloat_GetMin()
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Return the minimum normalized positive float *DBL_MIN* as C :ctype:`double`.
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.. cfunction:: int PyFloat_ClearFreeList()
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Clear the float free list. Return the number of items that could not
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be freed.
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