diff options
Diffstat (limited to 'files/de/web/javascript/reference/global_objects/number/epsilon/index.html')
| -rw-r--r-- | files/de/web/javascript/reference/global_objects/number/epsilon/index.html | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/files/de/web/javascript/reference/global_objects/number/epsilon/index.html b/files/de/web/javascript/reference/global_objects/number/epsilon/index.html new file mode 100644 index 0000000000..6259e2443f --- /dev/null +++ b/files/de/web/javascript/reference/global_objects/number/epsilon/index.html @@ -0,0 +1,75 @@ +--- +title: Number.EPSILON +slug: Web/JavaScript/Reference/Global_Objects/Number/EPSILON +tags: + - ECMAScript 2015 + - JavaScript + - Number + - Property +translation_of: Web/JavaScript/Reference/Global_Objects/Number/EPSILON +--- +<div>{{JSRef}}</div> + +<p>Die Eigenschaft <strong><code>Number.EPSILON</code></strong> beschreibt den Unterschied zwischen 1 und der kleinsten Gleitpunktzahl größer als 1.</p> + +<p>Man muss kein Objekt von Typ {{jsxref("Number")}} erzeugen, um auf diese statische Eigenschaft zuzugreifen. Man muss nur <code>Number.EPSILON</code> aufrufen.</p> + +<div>{{EmbedInteractiveExample("pages/js/number-epsilon.html")}}</div> + + + +<div>{{js_property_attributes(0,0,0)}}</div> + +<h2 id="Description" name="Description">Beschreibung</h2> + +<p>Die <code>EPSILON</code> Eigenschaft hat einen ungefähren Wert von <code>2.2204460492503130808472633361816E-16</code> order <code>2<sup>-52</sup></code>.</p> + +<h2 id="Examples" name="Examples">Beispiele</h2> + +<h3 id="Testgleichung">Testgleichung</h3> + +<pre class="brush: js">x = 0.2; +y = 0.3; +z = 0.1; +equal = (Math.abs(x - y + z) < Number.EPSILON);</pre> + +<h2 id="Polyfill">Polyfill</h2> + +<pre class="brush: js line-numbers language-js"><code class="language-js"><span class="keyword token">if</span> <span class="punctuation token">(</span>Number<span class="punctuation token">.</span>EPSILON <span class="operator token">===</span> undefined<span class="punctuation token">) </span><span class="punctuation token">{</span> + Number<span class="punctuation token">.</span>EPSILON <span class="operator token">=</span> Math<span class="punctuation token">.</span><span class="function token">pow</span><span class="punctuation token">(</span><span class="number token">2</span><span class="punctuation token">,</span> <span class="operator token">-</span><span class="number token">52</span><span class="punctuation token">)</span><span class="punctuation token">; +}</span></code> +</pre> + +<h2 id="Spezifikationen">Spezifikationen</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Spezifikation</th> + <th scope="col">Status</th> + <th scope="col">Kommentar</th> + </tr> + <tr> + <td>{{SpecName('ES2015', '#sec-number.epsilon', 'Number.EPSILON')}}</td> + <td>{{Spec2('ES2015')}}</td> + <td>Initiale Definition.</td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-number.epsilon', 'Number.EPSILON')}}</td> + <td>{{Spec2('ESDraft')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Browserkompatibilität">Browserkompatibilität</h2> + +<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p> + +<p>{{Compat("javascript.builtins.Number.EPSILON")}}</p> + +<h2 id="See_also" name="See_also">Siehe auch</h2> + +<ul> + <li>Das {{jsxref("Number")}} Objekt.</li> +</ul> |
