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<title>7.2.4 Floating Point Objects
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<H2><A NAME=
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"floatObjects"></A>
7.2.4 Floating Point Objects
<a id='l2h-
419' xml:id='l2h-
419'
></a><dl><dt><b><tt class=
"ctype"><a id='l2h-
420' xml:id='l2h-
420'
>PyFloatObject
</a></tt></b></dt>
This subtype of
<tt class=
"ctype">PyObject
</tt> represents a Python floating point
<dl><dt>PyTypeObject
<b><tt id='l2h-
421' xml:id='l2h-
421'
class=
"cdata">PyFloat_Type
</tt></b></dt>
This instance of
<tt class=
"ctype">PyTypeObject
</tt> represents the Python floating
point type. This is the same object as
<code>types.FloatType
</code>.
<a id='l2h-
423' xml:id='l2h-
423'
></a></dd></dl>
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline"><td><nobr>int
<b><tt id='l2h-
424' xml:id='l2h-
424'
class=
"cfunction">PyFloat_Check
</tt></b>(
</nobr></td><td>PyObject *
<var>p
</var>)
</td></tr></table></dt>
Return true if its argument is a
<tt class=
"ctype">PyFloatObject
</tt> or a subtype
of
<tt class=
"ctype">PyFloatObject
</tt>.
<span class=
"versionnote">Changed in version
2.2:
Allowed subtypes to be accepted.
</span>
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline"><td><nobr>int
<b><tt id='l2h-
425' xml:id='l2h-
425'
class=
"cfunction">PyFloat_CheckExact
</tt></b>(
</nobr></td><td>PyObject *
<var>p
</var>)
</td></tr></table></dt>
Return true if its argument is a
<tt class=
"ctype">PyFloatObject
</tt>, but not a
subtype of
<tt class=
"ctype">PyFloatObject
</tt>.
<span class=
"versionnote">New in version
2.2.
</span>
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline"><td><nobr>PyObject*
<b><tt id='l2h-
426' xml:id='l2h-
426'
class=
"cfunction">PyFloat_FromString
</tt></b>(
</nobr></td><td>PyObject *
<var>str
</var>, char **
<var>pend
</var>)
</td></tr></table></dt>
Create a
<tt class=
"ctype">PyFloatObject
</tt> object based on the string value in
<var>str
</var>, or
<tt class=
"constant">NULL
</tt> on failure. The
<var>pend
</var> argument is ignored. It
remains only for backward compatibility.
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline"><td><nobr>PyObject*
<b><tt id='l2h-
427' xml:id='l2h-
427'
class=
"cfunction">PyFloat_FromDouble
</tt></b>(
</nobr></td><td>double
<var>v
</var>)
</td></tr></table></dt>
<div class=
"refcount-info">
<span class=
"label">Return value:
</span>
<span class=
"value">New reference.
</span>
Create a
<tt class=
"ctype">PyFloatObject
</tt> object from
<var>v
</var>, or
<tt class=
"constant">NULL
</tt> on
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline"><td><nobr>double
<b><tt id='l2h-
428' xml:id='l2h-
428'
class=
"cfunction">PyFloat_AsDouble
</tt></b>(
</nobr></td><td>PyObject *
<var>pyfloat
</var>)
</td></tr></table></dt>
Return a C
<tt class=
"ctype">double
</tt> representation of the contents of
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline"><td><nobr>double
<b><tt id='l2h-
429' xml:id='l2h-
429'
class=
"cfunction">PyFloat_AS_DOUBLE
</tt></b>(
</nobr></td><td>PyObject *
<var>pyfloat
</var>)
</td></tr></table></dt>
Return a C
<tt class=
"ctype">double
</tt> representation of the contents of
<var>pyfloat
</var>, but without error checking.
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<span class=
"release-info">Release
2.4.2, documentation updated on
28 September
2005.
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