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| <div class="docblock item-decl"><pre class="rust fn"><code>pub fn expm1(x: <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.f64.html">f64</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.f64.html">f64</a></code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Exponential, base <em>e</em>, of x-1 (f64)</p> |
| <p>Calculates the exponential of <code>x</code> and subtract 1, that is, <em>e</em> raised |
| to the power <code>x</code> minus 1 (where <em>e</em> is the base of the natural |
| system of logarithms, approximately 2.71828). |
| The result is accurate even for small values of <code>x</code>, |
| where using <code>exp(x)-1</code> would lose many significant digits.</p> |
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