<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1, user-scalable=no">
  <meta name="description" content="API docs for the atan function from the dart:math library, for the Dart programming language.">
  <title>atan function - dart:math library - Dart API</title>
  <!-- required because all the links are pseudo-absolute -->
  <base href="..">

  <link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500,400i,400,300|Source+Sans+Pro:400,300,700" rel="stylesheet">
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <link rel="stylesheet" href="static-assets/github.css">
  <link rel="stylesheet" href="static-assets/styles.css">
  <link rel="icon" href="static-assets/favicon.png">
  
</head>

<body>

<div id="overlay-under-drawer"></div>

<header id="title">
  <button id="sidenav-left-toggle" type="button">&nbsp;</button>
  <ol class="breadcrumbs gt-separated dark hidden-xs">
    <li><a href="index.html">stripe_native</a></li>
    <li><a href="dart-math/dart-math-library.html">dart:math</a></li>
    <li class="self-crumb">atan function</li>
  </ol>
  <div class="self-name">atan</div>
  <form class="search navbar-right" role="search">
    <input type="text" id="search-box" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
  </form>
</header>

<main>

  <div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
    <header id="header-search-sidebar" class="hidden-l">
      <form class="search-sidebar" role="search">
        <input type="text" id="search-sidebar" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
      </form>
    </header>
    
    <ol class="breadcrumbs gt-separated dark hidden-l" id="sidebar-nav">
      <li><a href="index.html">stripe_native</a></li>
      <li><a href="dart-math/dart-math-library.html">dart:math</a></li>
      <li class="self-crumb">atan function</li>
    </ol>
    
    <h5>dart:math library</h5>
    <ol>
      <li class="section-title"><a href="dart-math/dart-math-library.html#classes">Classes</a></li>
      <li><a href="dart-math/MutableRectangle-class.html">MutableRectangle</a></li>
      <li><a href="dart-math/Point-class.html">Point</a></li>
      <li><a href="dart-math/Random-class.html">Random</a></li>
      <li><a href="dart-math/Rectangle-class.html">Rectangle</a></li>
    
    
      <li class="section-title"><a href="dart-math/dart-math-library.html#constants">Constants</a></li>
      <li><a href="dart-math/e-constant.html">e</a></li>
      <li><a href="dart-math/ln2-constant.html">ln2</a></li>
      <li><a href="dart-math/ln10-constant.html">ln10</a></li>
      <li><a href="dart-math/log2e-constant.html">log2e</a></li>
      <li><a href="dart-math/log10e-constant.html">log10e</a></li>
      <li><a href="dart-math/pi-constant.html">pi</a></li>
      <li><a href="dart-math/sqrt1_2-constant.html">sqrt1_2</a></li>
      <li><a href="dart-math/sqrt2-constant.html">sqrt2</a></li>
    
    
      <li class="section-title"><a href="dart-math/dart-math-library.html#functions">Functions</a></li>
      <li><a href="dart-math/acos.html">acos</a></li>
      <li><a href="dart-math/asin.html">asin</a></li>
      <li><a href="dart-math/atan.html">atan</a></li>
      <li><a href="dart-math/atan2.html">atan2</a></li>
      <li><a href="dart-math/cos.html">cos</a></li>
      <li><a href="dart-math/exp.html">exp</a></li>
      <li><a href="dart-math/log.html">log</a></li>
      <li><a href="dart-math/max.html">max</a></li>
      <li><a href="dart-math/min.html">min</a></li>
      <li><a href="dart-math/pow.html">pow</a></li>
      <li><a href="dart-math/sin.html">sin</a></li>
      <li><a href="dart-math/sqrt.html">sqrt</a></li>
      <li><a href="dart-math/tan.html">tan</a></li>
    
    
    
    </ol>
  </div><!--/.sidebar-offcanvas-left-->

  <div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
      <div><h1><span class="kind-function">atan</span> function </h1></div>

    <section class="multi-line-signature">
        <span class="returntype"><a href="dart-core/double-class.html">double</a></span>
                <span class="name ">atan</span>
(<wbr><span class="parameter" id="atan-param-x"><span class="type-annotation"><a href="dart-core/num-class.html">num</a></span> <span class="parameter-name">x</span></span>)
    </section>
    <section class="desc markdown">
      <p>Converts <code>x</code> to a <a href="dart-core/double-class.html">double</a> and returns its arc tangent in radians.</p>
<p>Returns a value in the range -PI/2..PI/2, or NaN if <code>x</code> is NaN.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">external double atan(num x);</code></pre>
    </section>

  </div> <!-- /.main-content -->

  <div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
  </div><!--/.sidebar-offcanvas-->

</main>

<footer>
  <span class="no-break">
    stripe_native 1.0.4
  </span>

  
</footer>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="static-assets/typeahead.bundle.min.js"></script>
<script src="static-assets/highlight.pack.js"></script>
<script src="static-assets/URI.js"></script>
<script src="static-assets/script.js"></script>


</body>

</html>
