| |
| <!DOCTYPE html> |
| |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8" /> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| <title>math — CMake 3.23.1 Documentation</title> |
| |
| <link rel="stylesheet" type="text/css" href="../_static/pygments.css" /> |
| <link rel="stylesheet" type="text/css" href="../_static/cmake.css" /> |
| |
| <script data-url_root="../" id="documentation_options" src="../_static/documentation_options.js"></script> |
| <script src="../_static/jquery.js"></script> |
| <script src="../_static/underscore.js"></script> |
| <script src="../_static/doctools.js"></script> |
| |
| <link rel="shortcut icon" href="../_static/cmake-favicon.ico"/> |
| <link rel="index" title="Index" href="../genindex.html" /> |
| <link rel="search" title="Search" href="../search.html" /> |
| <link rel="next" title="message" href="message.html" /> |
| <link rel="prev" title="mark_as_advanced" href="mark_as_advanced.html" /> |
| |
| |
| </head><body> |
| |
| <div class="related" role="navigation" aria-label="related navigation"> |
| <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="message.html" title="message" |
| accesskey="N">next</a> |</li> |
| <li class="right" > |
| <a href="mark_as_advanced.html" title="mark_as_advanced" |
| accesskey="P">previous</a> |</li> |
| <li> |
| <img src="../_static/cmake-logo-16.png" alt="" |
| style="vertical-align: middle; margin-top: -2px" /> |
| </li> |
| <li> |
| <a href="https://cmake.org/">CMake</a> » |
| </li> |
| <li> |
| <a href="../index.html">3.23.1 Documentation</a> » |
| </li> |
| |
| <li class="nav-item nav-item-1"><a href="../manual/cmake-commands.7.html" accesskey="U">cmake-commands(7)</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">math</a></li> |
| </ul> |
| </div> |
| |
| <div class="document"> |
| <div class="documentwrapper"> |
| <div class="bodywrapper"> |
| <div class="body" role="main"> |
| |
| <div class="section" id="math"> |
| <span id="command:math"></span><h1>math<a class="headerlink" href="#math" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Evaluate a mathematical expression.</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">math(</span><span class="no">EXPR</span><span class="w"> </span><span class="nv"><variable></span><span class="w"> </span><span class="s">"<expression>"</span><span class="w"> </span><span class="p">[</span><span class="no">OUTPUT_FORMAT</span><span class="w"> </span><span class="nv"><format></span><span class="p">]</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>Evaluates a mathematical <code class="docutils literal notranslate"><span class="pre"><expression></span></code> and sets <code class="docutils literal notranslate"><span class="pre"><variable></span></code> to the |
| resulting value. The result of the expression must be representable as a |
| 64-bit signed integer.</p> |
| <p>The mathematical expression must be given as a string (i.e. enclosed in |
| double quotation marks). An example is <code class="docutils literal notranslate"><span class="pre">"5</span> <span class="pre">*</span> <span class="pre">(10</span> <span class="pre">+</span> <span class="pre">13)"</span></code>. |
| Supported operators are <code class="docutils literal notranslate"><span class="pre">+</span></code>, <code class="docutils literal notranslate"><span class="pre">-</span></code>, <code class="docutils literal notranslate"><span class="pre">*</span></code>, <code class="docutils literal notranslate"><span class="pre">/</span></code>, <code class="docutils literal notranslate"><span class="pre">%</span></code>, <code class="docutils literal notranslate"><span class="pre">|</span></code>, <code class="docutils literal notranslate"><span class="pre">&</span></code>, |
| <code class="docutils literal notranslate"><span class="pre">^</span></code>, <code class="docutils literal notranslate"><span class="pre">~</span></code>, <code class="docutils literal notranslate"><span class="pre"><<</span></code>, <code class="docutils literal notranslate"><span class="pre">>></span></code>, and <code class="docutils literal notranslate"><span class="pre">(...)</span></code>; they have the same meaning |
| as in C code.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.13: </span>Hexadecimal numbers are recognized when prefixed with <code class="docutils literal notranslate"><span class="pre">0x</span></code>, as in C code.</p> |
| </div> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.13: </span>The result is formatted according to the option <code class="docutils literal notranslate"><span class="pre">OUTPUT_FORMAT</span></code>, |
| where <code class="docutils literal notranslate"><span class="pre"><format></span></code> is one of</p> |
| <dl class="simple"> |
| <dt><code class="docutils literal notranslate"><span class="pre">HEXADECIMAL</span></code></dt><dd><p>Hexadecimal notation as in C code, i. e. starting with "0x".</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">DECIMAL</span></code></dt><dd><p>Decimal notation. Which is also used if no <code class="docutils literal notranslate"><span class="pre">OUTPUT_FORMAT</span></code> option |
| is specified.</p> |
| </dd> |
| </dl> |
| </div> |
| <p>For example</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">math(</span><span class="no">EXPR</span><span class="w"> </span><span class="nb">value</span><span class="w"> </span><span class="s">"100 * 0xA"</span><span class="w"> </span><span class="no">OUTPUT_FORMAT</span><span class="w"> </span><span class="no">DECIMAL</span><span class="nf">)</span><span class="w"> </span><span class="c"># value is set to "1000"</span> |
| <span class="nf">math(</span><span class="no">EXPR</span><span class="w"> </span><span class="nb">value</span><span class="w"> </span><span class="s">"100 * 0xA"</span><span class="w"> </span><span class="no">OUTPUT_FORMAT</span><span class="w"> </span><span class="no">HEXADECIMAL</span><span class="nf">)</span><span class="w"> </span><span class="c"># value is set to "0x3e8"</span> |
| </pre></div> |
| </div> |
| </div> |
| |
| |
| <div class="clearer"></div> |
| </div> |
| </div> |
| </div> |
| <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> |
| <div class="sphinxsidebarwrapper"> |
| <h4>Previous topic</h4> |
| <p class="topless"><a href="mark_as_advanced.html" |
| title="previous chapter">mark_as_advanced</a></p> |
| <h4>Next topic</h4> |
| <p class="topless"><a href="message.html" |
| title="next chapter">message</a></p> |
| <div role="note" aria-label="source link"> |
| <h3>This Page</h3> |
| <ul class="this-page-menu"> |
| <li><a href="../_sources/command/math.rst.txt" |
| rel="nofollow">Show Source</a></li> |
| </ul> |
| </div> |
| <div id="searchbox" style="display: none" role="search"> |
| <h3 id="searchlabel">Quick search</h3> |
| <div class="searchformwrapper"> |
| <form class="search" action="../search.html" method="get"> |
| <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/> |
| <input type="submit" value="Go" /> |
| </form> |
| </div> |
| </div> |
| <script>$('#searchbox').show(0);</script> |
| </div> |
| </div> |
| <div class="clearer"></div> |
| </div> |
| <div class="related" role="navigation" aria-label="related navigation"> |
| <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="message.html" title="message" |
| >next</a> |</li> |
| <li class="right" > |
| <a href="mark_as_advanced.html" title="mark_as_advanced" |
| >previous</a> |</li> |
| <li> |
| <img src="../_static/cmake-logo-16.png" alt="" |
| style="vertical-align: middle; margin-top: -2px" /> |
| </li> |
| <li> |
| <a href="https://cmake.org/">CMake</a> » |
| </li> |
| <li> |
| <a href="../index.html">3.23.1 Documentation</a> » |
| </li> |
| |
| <li class="nav-item nav-item-1"><a href="../manual/cmake-commands.7.html" >cmake-commands(7)</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">math</a></li> |
| </ul> |
| </div> |
| |
| <div class="footer" role="contentinfo"> |
| © Copyright 2000-2022 Kitware, Inc. and Contributors. |
| Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 4.1.2. |
| </div> |
| </body> |
| </html> |
