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    <title>JSDoc: Class: Math</title>

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    <h1 class="page-title">Class: Math</h1>

    
<section>

<header>
    
        <h2><span class="attribs"><span class="type-signature"></span></span>
            <span class="ancestors"><a href="module-barejs_polyfill.html">barejs/polyfill</a>.</span>Math<span class="signature">()</span><span class="type-signature"></span></h2>
        
    
</header>

<article>
    <div class="container-overview">
    
        
    <h4 class="name" id="Math"><span class="type-signature"></span>new Math<span class="signature">()</span><span class="type-signature"></span></h4>
    

<div class="description">
    <p>Polyfills for <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math">Math</a>.</p>
</div>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line17">line 17</a>
    </li></ul></dd>
    

</dl>


    </div>

    
        <h3 class="subsection-title">Methods</h3>

        
    <h4 class="name" id=".acosh"><span class="type-signature">(static) </span>acosh<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.acosh() function returns the hyperbolic arc-cosine of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to calculate the arc-cosine of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line157">line 157</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The hyperbolic arc-cosine.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".asinh"><span class="type-signature">(static) </span>asinh<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.asinh() function returns the hyperbolic arcsine of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to calculate the arcsine of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line178">line 178</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The hyperbolic arcsine.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".atanh"><span class="type-signature">(static) </span>atanh<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.atanh() function returns the hyperbolic arctangent of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to calculate the arctangent of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line208">line 208</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The hyperbolic arctangent.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".cbrt"><span class="type-signature">(static) </span>cbrt<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.cbrt() function returns the cube root of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The number to get the cube root of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line33">line 33</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The cube root of the number</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".clz32"><span class="type-signature">(static) </span>clz32<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.clz32() function returns the number of leading zero bits in the 32-bit binary representation of a number.
&quot;clz32&quot; is short for CountLeadingZeroes32.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line96">line 96</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".cosh"><span class="type-signature">(static) </span>cosh<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.cosh() function returns the hyperbolic cosine of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to calculate the cosine of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line146">line 146</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The hyperbolic cosine.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".expm1"><span class="type-signature">(static) </span>expm1<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.expm1() function returns e^x - 1, where x is the argument, and e the base of the natural logarithms.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The number.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line44">line 44</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>A number representing e^x - 1, where e is Euler's number and x is the argument.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".hypot"><span class="type-signature">(static) </span>hypot<span class="signature">()</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.hypot() function returns the square root of the sum of squares of its arguments.</p>
</div>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line53">line 53</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The square root of the sum of squares of its arguments.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".imul"><span class="type-signature">(static) </span>imul<span class="signature">(_a, _b)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.imul() function returns the result of the C-like 32-bit multiplication of the two parameters.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_a</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>Operand A.</p></td>
        </tr>

    
        <tr>
            
                <td class="name"><code>_b</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>Operand B.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line71">line 71</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The result of the multiplication.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".log1p"><span class="type-signature">(static) </span>log1p<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.log1p() function returns the natural logarithm (base e) of 1 + a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to get the logarithm of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line115">line 115</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The logarithm of 1 + _x.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".log2"><span class="type-signature">(static) </span>log2<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.log2() function returns the base 2 logarithm of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to get the base 2 logarithm of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line125">line 125</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The base 2 logarithm of _x.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".log10"><span class="type-signature">(static) </span>log10<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.log10() function returns the base 10 logarithm of a number.
Note that this polyfill is subject to rounding errors.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to get the base 10 logarithm of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line136">line 136</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The base 10 logarithm of _x.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".sign"><span class="type-signature">(static) </span>sign<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.sign() function returns the sign of a number, indicating whether the number is positive, negative or zero.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The number to check</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line219">line 219</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>This function has 5 kinds of return values, 1, -1, 0, -0, NaN, which represent
                 &quot;positive number&quot;, &quot;negative number&quot;, &quot;positive zero&quot;, &quot;negative zero&quot; and NaN respectively.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".sinh"><span class="type-signature">(static) </span>sinh<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.sinh() function returns the hyperbolic sine of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to calculate the sine of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line167">line 167</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The hyperbolic sine.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".tanh"><span class="type-signature">(static) </span>tanh<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>The Math.tanh() function returns the hyperbolic tangent of a number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The value to calculate the tangent of.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line191">line 191</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The hyperbolic tangent.</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
    <h4 class="name" id=".trunc"><span class="type-signature">(static) </span>trunc<span class="signature">(_x)</span><span class="type-signature"> &rarr; {number}</span></h4>
    

<div class="description">
    <p>Unlike other three Math methods: Math.floor(), Math.ceil() and Math.round(), the way
Math.trunc() works is very simple and straightforward, just truncate the dot and the digits
behind it, no matter whether the argument is a positive number or a negative number.</p>
</div>


    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>_x</code></td>
            

            <td class="type">
            
                
<span class="param-type">number</span>


            </td>

            
            <td class="description last"><p>The number to truncate.</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="polyfill_Math.js.html">polyfill/Math.js</a>, <a href="polyfill_Math.js.html#line234">line 234</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The truncated number</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">number</span>


    </dd>
</dl>

    
</article>

</section>


</div>

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