Edit File: long.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Long Integer Objects — Python 2.7.5 documentation</title> <link rel="stylesheet" href="../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../', VERSION: '2.7.5', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 2.7.5 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="top" title="Python 2.7.5 documentation" href="../index.html" /> <link rel="up" title="Concrete Objects Layer" href="concrete.html" /> <link rel="next" title="Floating Point Objects" href="float.html" /> <link rel="prev" title="Boolean Objects" href="bool.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <script type="text/javascript" src="../_static/copybutton.js"></script> </head> <body> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="float.html" title="Floating Point Objects" accesskey="N">next</a> |</li> <li class="right" > <a href="bool.html" title="Boolean Objects" accesskey="P">previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="http://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.5 documentation</a> » </li> <li><a href="index.html" >Python/C API Reference Manual</a> »</li> <li><a href="concrete.html" accesskey="U">Concrete Objects Layer</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="long-integer-objects"> <span id="longobjects"></span><h1>Long Integer Objects<a class="headerlink" href="#long-integer-objects" title="Permalink to this headline">¶</a></h1> <span class="target" id="index-0"></span><dl class="type"> <dt id="PyLongObject"> <tt class="descname">PyLongObject</tt><a class="headerlink" href="#PyLongObject" title="Permalink to this definition">¶</a></dt> <dd><p>This subtype of <a class="reference internal" href="structures.html#PyObject" title="PyObject"><tt class="xref c c-type docutils literal"><span class="pre">PyObject</span></tt></a> represents a Python long integer object.</p> </dd></dl> <dl class="var"> <dt id="PyLong_Type"> <a class="reference internal" href="type.html#PyTypeObject" title="PyTypeObject">PyTypeObject</a> <tt class="descname">PyLong_Type</tt><a class="headerlink" href="#PyLong_Type" title="Permalink to this definition">¶</a></dt> <dd><p id="index-1">This instance of <a class="reference internal" href="type.html#PyTypeObject" title="PyTypeObject"><tt class="xref c c-type docutils literal"><span class="pre">PyTypeObject</span></tt></a> represents the Python long integer type. This is the same object as <tt class="docutils literal"><span class="pre">long</span></tt> and <tt class="docutils literal"><span class="pre">types.LongType</span></tt>.</p> </dd></dl> <dl class="function"> <dt id="PyLong_Check"> int <tt class="descname">PyLong_Check</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *p</em><big>)</big><a class="headerlink" href="#PyLong_Check" title="Permalink to this definition">¶</a></dt> <dd><p>Return true if its argument is a <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> or a subtype of <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a>.</p> <p class="versionchanged"> <span class="versionmodified">Changed in version 2.2: </span>Allowed subtypes to be accepted.</p> </dd></dl> <dl class="function"> <dt id="PyLong_CheckExact"> int <tt class="descname">PyLong_CheckExact</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *p</em><big>)</big><a class="headerlink" href="#PyLong_CheckExact" title="Permalink to this definition">¶</a></dt> <dd><p>Return true if its argument is a <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a>, but not a subtype of <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a>.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.2.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_FromLong"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromLong</tt><big>(</big>long<em> v</em><big>)</big><a class="headerlink" href="#PyLong_FromLong" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object from <em>v</em>, or <em>NULL</em> on failure.</p> </dd></dl> <dl class="function"> <dt id="PyLong_FromUnsignedLong"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromUnsignedLong</tt><big>(</big>unsigned long<em> v</em><big>)</big><a class="headerlink" href="#PyLong_FromUnsignedLong" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object from a C <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span></tt>, or <em>NULL</em> on failure.</p> </dd></dl> <dl class="function"> <dt id="PyLong_FromSsize_t"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromSsize_t</tt><big>(</big>Py_ssize_t<em> v</em><big>)</big><a class="headerlink" href="#PyLong_FromSsize_t" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object from a C <tt class="xref c c-type docutils literal"><span class="pre">Py_ssize_t</span></tt>, or <em>NULL</em> on failure.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.6.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_FromSize_t"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromSize_t</tt><big>(</big>size_t<em> v</em><big>)</big><a class="headerlink" href="#PyLong_FromSize_t" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object from a C <tt class="xref c c-type docutils literal"><span class="pre">size_t</span></tt>, or <em>NULL</em> on failure.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.6.</span></p> </dd></dl> <dl class="function"> <dt> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromSsize_t</tt><big>(</big>Py_ssize_t<em> v</em><big>)</big></dt> <dd><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object with a value of <em>v</em>, or <em>NULL</em> on failure.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.6.</span></p> </dd></dl> <dl class="function"> <dt> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromSize_t</tt><big>(</big>size_t<em> v</em><big>)</big></dt> <dd><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object with a value of <em>v</em>, or <em>NULL</em> on failure.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.6.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_FromLongLong"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromLongLong</tt><big>(</big>PY_LONG_LONG<em> v</em><big>)</big><a class="headerlink" href="#PyLong_FromLongLong" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object from a C <tt class="xref c c-type docutils literal"><span class="pre">long</span> <span class="pre">long</span></tt>, or <em>NULL</em> on failure.</p> </dd></dl> <dl class="function"> <dt id="PyLong_FromUnsignedLongLong"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromUnsignedLongLong</tt><big>(</big>unsigned PY_LONG_LONG<em> v</em><big>)</big><a class="headerlink" href="#PyLong_FromUnsignedLongLong" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object from a C <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></tt>, or <em>NULL</em> on failure.</p> </dd></dl> <dl class="function"> <dt id="PyLong_FromDouble"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromDouble</tt><big>(</big>double<em> v</em><big>)</big><a class="headerlink" href="#PyLong_FromDouble" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> object from the integer part of <em>v</em>, or <em>NULL</em> on failure.</p> </dd></dl> <dl class="function"> <dt id="PyLong_FromString"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromString</tt><big>(</big>char<em> *str</em>, char<em> **pend</em>, int<em> base</em><big>)</big><a class="headerlink" href="#PyLong_FromString" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new <a class="reference internal" href="#PyLongObject" title="PyLongObject"><tt class="xref c c-type docutils literal"><span class="pre">PyLongObject</span></tt></a> based on the string value in <em>str</em>, which is interpreted according to the radix in <em>base</em>. If <em>pend</em> is non-<em>NULL</em>, <em>*pend</em> will point to the first character in <em>str</em> which follows the representation of the number. If <em>base</em> is <tt class="docutils literal"><span class="pre">0</span></tt>, the radix will be determined based on the leading characters of <em>str</em>: if <em>str</em> starts with <tt class="docutils literal"><span class="pre">'0x'</span></tt> or <tt class="docutils literal"><span class="pre">'0X'</span></tt>, radix 16 will be used; if <em>str</em> starts with <tt class="docutils literal"><span class="pre">'0'</span></tt>, radix 8 will be used; otherwise radix 10 will be used. If <em>base</em> is not <tt class="docutils literal"><span class="pre">0</span></tt>, it must be between <tt class="docutils literal"><span class="pre">2</span></tt> and <tt class="docutils literal"><span class="pre">36</span></tt>, inclusive. Leading spaces are ignored. If there are no digits, <a class="reference internal" href="../library/exceptions.html#exceptions.ValueError" title="exceptions.ValueError"><tt class="xref py py-exc docutils literal"><span class="pre">ValueError</span></tt></a> will be raised.</p> </dd></dl> <dl class="function"> <dt id="PyLong_FromUnicode"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromUnicode</tt><big>(</big><a class="reference internal" href="unicode.html#Py_UNICODE" title="Py_UNICODE">Py_UNICODE</a><em> *u</em>, Py_ssize_t<em> length</em>, int<em> base</em><big>)</big><a class="headerlink" href="#PyLong_FromUnicode" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Convert a sequence of Unicode digits to a Python long integer value. The first parameter, <em>u</em>, points to the first character of the Unicode string, <em>length</em> gives the number of characters, and <em>base</em> is the radix for the conversion. The radix must be in the range [2, 36]; if it is out of range, <a class="reference internal" href="../library/exceptions.html#exceptions.ValueError" title="exceptions.ValueError"><tt class="xref py py-exc docutils literal"><span class="pre">ValueError</span></tt></a> will be raised.</p> <p class="versionadded"> <span class="versionmodified">New in version 1.6.</span></p> <p class="versionchanged"> <span class="versionmodified">Changed in version 2.5: </span>This function used an <tt class="xref c c-type docutils literal"><span class="pre">int</span></tt> for <em>length</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </dd></dl> <dl class="function"> <dt id="PyLong_FromVoidPtr"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyLong_FromVoidPtr</tt><big>(</big>void<em> *p</em><big>)</big><a class="headerlink" href="#PyLong_FromVoidPtr" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Create a Python integer or long integer from the pointer <em>p</em>. The pointer value can be retrieved from the resulting value using <a class="reference internal" href="#PyLong_AsVoidPtr" title="PyLong_AsVoidPtr"><tt class="xref c c-func docutils literal"><span class="pre">PyLong_AsVoidPtr()</span></tt></a>.</p> <p class="versionadded"> <span class="versionmodified">New in version 1.5.2.</span></p> <p class="versionchanged"> <span class="versionmodified">Changed in version 2.5: </span>If the integer is larger than LONG_MAX, a positive long integer is returned.</p> </dd></dl> <dl class="function"> <dt id="PyLong_AsLong"> long <tt class="descname">PyLong_AsLong</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big><a class="headerlink" href="#PyLong_AsLong" title="Permalink to this definition">¶</a></dt> <dd><p id="index-2">Return a C <tt class="xref c c-type docutils literal"><span class="pre">long</span></tt> representation of the contents of <em>pylong</em>. If <em>pylong</em> is greater than <tt class="xref py py-const docutils literal"><span class="pre">LONG_MAX</span></tt>, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> is raised and <tt class="docutils literal"><span class="pre">-1</span></tt> will be returned.</p> </dd></dl> <dl class="function"> <dt id="PyLong_AsLongAndOverflow"> long <tt class="descname">PyLong_AsLongAndOverflow</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em>, int<em> *overflow</em><big>)</big><a class="headerlink" href="#PyLong_AsLongAndOverflow" title="Permalink to this definition">¶</a></dt> <dd><p>Return a C <tt class="xref c c-type docutils literal"><span class="pre">long</span></tt> representation of the contents of <em>pylong</em>. If <em>pylong</em> is greater than <tt class="xref py py-const docutils literal"><span class="pre">LONG_MAX</span></tt> or less than <tt class="xref py py-const docutils literal"><span class="pre">LONG_MIN</span></tt>, set <em>*overflow</em> to <tt class="docutils literal"><span class="pre">1</span></tt> or <tt class="docutils literal"><span class="pre">-1</span></tt>, respectively, and return <tt class="docutils literal"><span class="pre">-1</span></tt>; otherwise, set <em>*overflow</em> to <tt class="docutils literal"><span class="pre">0</span></tt>. If any other exception occurs (for example a TypeError or MemoryError), then <tt class="docutils literal"><span class="pre">-1</span></tt> will be returned and <em>*overflow</em> will be <tt class="docutils literal"><span class="pre">0</span></tt>.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.7.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_AsLongLongAndOverflow"> PY_LONG_LONG <tt class="descname">PyLong_AsLongLongAndOverflow</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em>, int<em> *overflow</em><big>)</big><a class="headerlink" href="#PyLong_AsLongLongAndOverflow" title="Permalink to this definition">¶</a></dt> <dd><p>Return a C <tt class="xref c c-type docutils literal"><span class="pre">long</span> <span class="pre">long</span></tt> representation of the contents of <em>pylong</em>. If <em>pylong</em> is greater than <tt class="xref py py-const docutils literal"><span class="pre">PY_LLONG_MAX</span></tt> or less than <tt class="xref py py-const docutils literal"><span class="pre">PY_LLONG_MIN</span></tt>, set <em>*overflow</em> to <tt class="docutils literal"><span class="pre">1</span></tt> or <tt class="docutils literal"><span class="pre">-1</span></tt>, respectively, and return <tt class="docutils literal"><span class="pre">-1</span></tt>; otherwise, set <em>*overflow</em> to <tt class="docutils literal"><span class="pre">0</span></tt>. If any other exception occurs (for example a TypeError or MemoryError), then <tt class="docutils literal"><span class="pre">-1</span></tt> will be returned and <em>*overflow</em> will be <tt class="docutils literal"><span class="pre">0</span></tt>.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.7.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_AsSsize_t"> Py_ssize_t <tt class="descname">PyLong_AsSsize_t</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big><a class="headerlink" href="#PyLong_AsSsize_t" title="Permalink to this definition">¶</a></dt> <dd><p id="index-3">Return a C <tt class="xref c c-type docutils literal"><span class="pre">Py_ssize_t</span></tt> representation of the contents of <em>pylong</em>. If <em>pylong</em> is greater than <tt class="xref py py-const docutils literal"><span class="pre">PY_SSIZE_T_MAX</span></tt>, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> is raised and <tt class="docutils literal"><span class="pre">-1</span></tt> will be returned.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.6.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_AsUnsignedLong"> unsigned long <tt class="descname">PyLong_AsUnsignedLong</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big><a class="headerlink" href="#PyLong_AsUnsignedLong" title="Permalink to this definition">¶</a></dt> <dd><p id="index-4">Return a C <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span></tt> representation of the contents of <em>pylong</em>. If <em>pylong</em> is greater than <tt class="xref py py-const docutils literal"><span class="pre">ULONG_MAX</span></tt>, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> is raised.</p> </dd></dl> <dl class="function"> <dt> Py_ssize_t <tt class="descname">PyLong_AsSsize_t</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big></dt> <dd><p id="index-5">Return a <tt class="xref c c-type docutils literal"><span class="pre">Py_ssize_t</span></tt> representation of the contents of <em>pylong</em>. If <em>pylong</em> is greater than <tt class="xref py py-const docutils literal"><span class="pre">PY_SSIZE_T_MAX</span></tt>, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> is raised.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.6.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_AsLongLong"> PY_LONG_LONG <tt class="descname">PyLong_AsLongLong</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big><a class="headerlink" href="#PyLong_AsLongLong" title="Permalink to this definition">¶</a></dt> <dd><p id="index-6">Return a C <tt class="xref c c-type docutils literal"><span class="pre">long</span> <span class="pre">long</span></tt> from a Python long integer. If <em>pylong</em> cannot be represented as a <tt class="xref c c-type docutils literal"><span class="pre">long</span> <span class="pre">long</span></tt>, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> is raised and <tt class="docutils literal"><span class="pre">-1</span></tt> is returned.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.2.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_AsUnsignedLongLong"> unsigned PY_LONG_LONG <tt class="descname">PyLong_AsUnsignedLongLong</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big><a class="headerlink" href="#PyLong_AsUnsignedLongLong" title="Permalink to this definition">¶</a></dt> <dd><p id="index-7">Return a C <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></tt> from a Python long integer. If <em>pylong</em> cannot be represented as an <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></tt>, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> is raised and <tt class="docutils literal"><span class="pre">(unsigned</span> <span class="pre">long</span> <span class="pre">long)-1</span></tt> is returned.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.2.</span></p> <p class="versionchanged"> <span class="versionmodified">Changed in version 2.7: </span>A negative <em>pylong</em> now raises <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a>, not <a class="reference internal" href="../library/exceptions.html#exceptions.TypeError" title="exceptions.TypeError"><tt class="xref py py-exc docutils literal"><span class="pre">TypeError</span></tt></a>.</p> </dd></dl> <dl class="function"> <dt id="PyLong_AsUnsignedLongMask"> unsigned long <tt class="descname">PyLong_AsUnsignedLongMask</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *io</em><big>)</big><a class="headerlink" href="#PyLong_AsUnsignedLongMask" title="Permalink to this definition">¶</a></dt> <dd><p>Return a C <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span></tt> from a Python long integer, without checking for overflow.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.3.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_AsUnsignedLongLongMask"> unsigned PY_LONG_LONG <tt class="descname">PyLong_AsUnsignedLongLongMask</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *io</em><big>)</big><a class="headerlink" href="#PyLong_AsUnsignedLongLongMask" title="Permalink to this definition">¶</a></dt> <dd><p>Return a C <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></tt> from a Python long integer, without checking for overflow.</p> <p class="versionadded"> <span class="versionmodified">New in version 2.3.</span></p> </dd></dl> <dl class="function"> <dt id="PyLong_AsDouble"> double <tt class="descname">PyLong_AsDouble</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big><a class="headerlink" href="#PyLong_AsDouble" title="Permalink to this definition">¶</a></dt> <dd><p>Return a C <tt class="xref c c-type docutils literal"><span class="pre">double</span></tt> representation of the contents of <em>pylong</em>. If <em>pylong</em> cannot be approximately represented as a <tt class="xref c c-type docutils literal"><span class="pre">double</span></tt>, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> exception is raised and <tt class="docutils literal"><span class="pre">-1.0</span></tt> will be returned.</p> </dd></dl> <dl class="function"> <dt id="PyLong_AsVoidPtr"> void* <tt class="descname">PyLong_AsVoidPtr</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *pylong</em><big>)</big><a class="headerlink" href="#PyLong_AsVoidPtr" title="Permalink to this definition">¶</a></dt> <dd><p>Convert a Python integer or long integer <em>pylong</em> to a C <tt class="xref c c-type docutils literal"><span class="pre">void</span></tt> pointer. If <em>pylong</em> cannot be converted, an <a class="reference internal" href="../library/exceptions.html#exceptions.OverflowError" title="exceptions.OverflowError"><tt class="xref py py-exc docutils literal"><span class="pre">OverflowError</span></tt></a> will be raised. This is only assured to produce a usable <tt class="xref c c-type docutils literal"><span class="pre">void</span></tt> pointer for values created with <a class="reference internal" href="#PyLong_FromVoidPtr" title="PyLong_FromVoidPtr"><tt class="xref c c-func docutils literal"><span class="pre">PyLong_FromVoidPtr()</span></tt></a>.</p> <p class="versionadded"> <span class="versionmodified">New in version 1.5.2.</span></p> <p class="versionchanged"> <span class="versionmodified">Changed in version 2.5: </span>For values outside 0..LONG_MAX, both signed and unsigned integers are accepted.</p> </dd></dl> </div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="bool.html" title="previous chapter">Boolean Objects</a></p> <h4>Next topic</h4> <p class="topless"><a href="float.html" title="next chapter">Floating Point Objects</a></p> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../bugs.html">Report a Bug</a></li> <li><a href="../_sources/c-api/long.txt" rel="nofollow">Show Source</a></li> </ul> <div id="searchbox" style="display: none"> <h3>Quick search</h3> <form class="search" action="../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="float.html" title="Floating Point Objects" >next</a> |</li> <li class="right" > <a href="bool.html" title="Boolean Objects" >previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="http://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.5 documentation</a> » </li> <li><a href="index.html" >Python/C API Reference Manual</a> »</li> <li><a href="concrete.html" >Concrete Objects Layer</a> »</li> </ul> </div> <div class="footer"> © <a href="../copyright.html">Copyright</a> 1990-2020, Python Software Foundation. <br /> The Python Software Foundation is a non-profit corporation. <a href="http://www.python.org/psf/donations/">Please donate.</a> <br /> Last updated on Oct 13, 2020. <a href="../bugs.html">Found a bug</a>? <br /> Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.1.3. </div> </body> </html>