---
title: Math.fround()
slug: Web/JavaScript/Reference/Global_Objects/Math/fround
tags:
  - JavaScript
  - Math
  - Method
  - Reference
translation_of: Web/JavaScript/Reference/Global_Objects/Math/fround
---
<div>{{JSRef}}</div>

<p><strong><code>Math.fround()</code></strong> 함수는 <a class="external" href="https://en.wikipedia.org/wiki/Single-precision_floating-point_format" title="link to the wikipedia page on single-precision floating-point format">single precision</a> 포맷으로 표현할 수 있는 실수들 중에서 가장 가까운 숫자를 리턴합니다.</p>

<h2 id="문법">문법</h2>

<pre class="syntaxbox"><code>Math.fround(<var>x</var>)</code></pre>

<h3 id="파라메터">파라메터</h3>

<dl>
 <dt><code>x</code></dt>
 <dd>숫자.</dd>
</dl>

<h2 id="설명">설명</h2>

<p><code>fround()</code> 가 <code>Math</code> 객체의 정적 메소드이기 때문에, 반드시 <code>Math.fround()</code> 같은 형태로 사용해야 합니다. <code>Math</code> 객체를 직접 만들어서 호출하는 방식으로 사용하지 않습니다 (<code>Math</code> 는 생성자가 아닙니다).</p>

<h2 id="예제">예제</h2>

<h3 id="Math.fround()_사용법"><code>Math.fround() 사용법</code></h3>

<pre class="brush: js">Math.fround(0);     // 0
Math.fround(1);     // 1
Math.fround(1.337); // 1.3370000123977661
Math.fround(1.5);   // 1.5
Math.fround(NaN);   // NaN
</pre>

<h2 id="Polyfill">Polyfill</h2>

<p>만약 {{jsxref("Float32Array")}} 가 지원된다면, Math.fround() 를 다음 함수로 흉내낼 수 있습니다.</p>

<pre class="brush: js">Math.fround = Math.fround || (function (array) {
  return function(x) {
    return array[0] = x, array[0];
  };
})(Float32Array(1));
</pre>

<h2 id="스펙">스펙</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">스펙</th>
   <th scope="col">상태</th>
   <th scope="col">비고</th>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-math.fround', 'Math.fround')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td>초기 정의.</td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-math.fround', 'Math.fround')}}</td>
   <td>{{Spec2('ESDraft')}}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="브라우저_호환성">브라우저 호환성</h2>

<div>{{CompatibilityTable}}</div>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatChrome("38")}}</td>
   <td>{{CompatGeckoDesktop("26")}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatOpera("25")}}</td>
   <td>{{CompatSafari("7.1")}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Chrome for Android</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>8</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="See_also">See also</h2>

<ul>
 <li>{{jsxref("Math.round()")}}</li>
</ul>