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| <h1 id="Lucene_Net_Util_SloppyMath" data-uid="Lucene.Net.Util.SloppyMath" class="text-break">Class SloppyMath |
| </h1> |
| <div class="markdown level0 summary"><p>Math functions that trade off accuracy for speed. </p> |
| </div> |
| <div class="markdown level0 conceptual"></div> |
| <div class="inheritance"> |
| <h5>Inheritance</h5> |
| <div class="level0"><span class="xref">System.Object</span></div> |
| <div class="level1"><span class="xref">SloppyMath</span></div> |
| </div> |
| <div class="inheritedMembers"> |
| <h5>Inherited Members</h5> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object, System.Object)</span> |
| </div> |
| <div> |
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| </div> |
| <div> |
| <span class="xref">System.Object.GetType()</span> |
| </div> |
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| <span class="xref">System.Object.MemberwiseClone()</span> |
| </div> |
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| </div> |
| <div> |
| <span class="xref">System.Object.ToString()</span> |
| </div> |
| </div> |
| <h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Util.html">Lucene.Net.Util</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.dll</h6> |
| <h5 id="Lucene_Net_Util_SloppyMath_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public static class SloppyMath</code></pre> |
| </div> |
| <h3 id="methods">Methods |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Util_SloppyMath_Asin_System_Double_.md&value=---%0Auid%3A%20Lucene.Net.Util.SloppyMath.Asin(System.Double)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net/Util/SloppyMath.cs/#L114">View Source</a> |
| </span> |
| <a id="Lucene_Net_Util_SloppyMath_Asin_" data-uid="Lucene.Net.Util.SloppyMath.Asin*"></a> |
| <h4 id="Lucene_Net_Util_SloppyMath_Asin_System_Double_" data-uid="Lucene.Net.Util.SloppyMath.Asin(System.Double)">Asin(Double)</h4> |
| <div class="markdown level1 summary"><p>Returns the arc sine of a value. |
| <p> |
| The returned angle is in the range <em>-pi</em>/2 through <em>pi</em>/2. |
| Error is around 1E-7. |
| <p> |
| Special cases: |
| <ul><li>If the argument is <span class="xref">System.Double.NaN</span> or its absolute value is greater than 1, then the result is <span class="xref">System.Double.NaN</span>.</li></ul> </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public static double Asin(double a)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><span class="parametername">a</span></td> |
| <td><p>the value whose arc sine is to be returned. </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><p>arc sine of the argument </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 id="Lucene_Net_Util_SloppyMath_Asin_System_Double__seealso">See Also</h5> |
| <div class="seealso"> |
| <div><span class="xref">System.Math.Asin(System.Double)</span></div> |
| </div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Util_SloppyMath_Cos_System_Double_.md&value=---%0Auid%3A%20Lucene.Net.Util.SloppyMath.Cos(System.Double)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net/Util/SloppyMath.cs/#L75">View Source</a> |
| </span> |
| <a id="Lucene_Net_Util_SloppyMath_Cos_" data-uid="Lucene.Net.Util.SloppyMath.Cos*"></a> |
| <h4 id="Lucene_Net_Util_SloppyMath_Cos_System_Double_" data-uid="Lucene.Net.Util.SloppyMath.Cos(System.Double)">Cos(Double)</h4> |
| <div class="markdown level1 summary"><p>Returns the trigonometric cosine of an angle. |
| <p> |
| Error is around 1E-15. |
| <p> |
| Special cases: |
| <ul><li>If the argument is <span class="xref">System.Double.NaN</span> or an infinity, then the result is <span class="xref">System.Double.NaN</span>.</li></ul> </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public static double Cos(double a)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><span class="parametername">a</span></td> |
| <td><p>An angle, in radians. </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><p>The cosine of the argument. </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 id="Lucene_Net_Util_SloppyMath_Cos_System_Double__seealso">See Also</h5> |
| <div class="seealso"> |
| <div><span class="xref">System.Math.Cos(System.Double)</span></div> |
| </div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Util_SloppyMath_EarthDiameter_System_Double_.md&value=---%0Auid%3A%20Lucene.Net.Util.SloppyMath.EarthDiameter(System.Double)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net/Util/SloppyMath.cs/#L162">View Source</a> |
| </span> |
| <a id="Lucene_Net_Util_SloppyMath_EarthDiameter_" data-uid="Lucene.Net.Util.SloppyMath.EarthDiameter*"></a> |
| <h4 id="Lucene_Net_Util_SloppyMath_EarthDiameter_System_Double_" data-uid="Lucene.Net.Util.SloppyMath.EarthDiameter(System.Double)">EarthDiameter(Double)</h4> |
| <div class="markdown level1 summary"><p>Return an approximate value of the diameter of the earth at the given latitude, in kilometers. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public static double EarthDiameter(double latitude)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><span class="parametername">latitude</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Util_SloppyMath_Haversin_System_Double_System_Double_System_Double_System_Double_.md&value=---%0Auid%3A%20Lucene.Net.Util.SloppyMath.Haversin(System.Double%2CSystem.Double%2CSystem.Double%2CSystem.Double)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
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| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net/Util/SloppyMath.cs/#L48">View Source</a> |
| </span> |
| <a id="Lucene_Net_Util_SloppyMath_Haversin_" data-uid="Lucene.Net.Util.SloppyMath.Haversin*"></a> |
| <h4 id="Lucene_Net_Util_SloppyMath_Haversin_System_Double_System_Double_System_Double_System_Double_" data-uid="Lucene.Net.Util.SloppyMath.Haversin(System.Double,System.Double,System.Double,System.Double)">Haversin(Double, Double, Double, Double)</h4> |
| <div class="markdown level1 summary"><p>Returns the distance in kilometers between two points |
| specified in decimal degrees (latitude/longitude). </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public static double Haversin(double lat1, double lon1, double lat2, double lon2)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><span class="parametername">lat1</span></td> |
| <td><p>Latitude of the first point. </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><span class="parametername">lon1</span></td> |
| <td><p>Longitude of the first point. </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><span class="parametername">lat2</span></td> |
| <td><p>Latitude of the second point. </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><span class="parametername">lon2</span></td> |
| <td><p>Longitude of the second point. </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Double</span></td> |
| <td><p>distance in kilometers. </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </article> |
| </div> |
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