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202+ < span class ="cline-any cline-neutral "> </ span > </ td > < td class ="text "> < pre class ="prettyprint lang-js "> /**
203+ * @license Apache-2.0
204+ *
205+ * Copyright (c) 2025 The Stdlib Authors.
206+ *
207+ * Licensed under the Apache License, Version 2.0 (the "License");
208+ * you may not use this file except in compliance with the License.
209+ * You may obtain a copy of the License at
210+ *
211+ * http://www.apache.org/licenses/LICENSE-2.0
212+ *
213+ * Unless required by applicable law or agreed to in writing, software
214+ * distributed under the License is distributed on an "AS IS" BASIS,
215+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
216+ * See the License for the specific language governing permissions and
217+ * limitations under the License.
218+ */
219+
220+ 'use strict';
221+
222+ // MODULES //
223+
224+ var addon = require( './../src/addon.node' );
225+
226+ /**
227+ * Returns the variance of a gamma distribution.
228+ *
229+ * @private
230+ * @param {PositiveNumber} alpha - shape parameter
231+ * @param {PositiveNumber} beta - rate parameter
232+ * @returns {PositiveNumber} variance
233+ *
234+ * @example
235+ * var v = variance( 1.0, 1.0 );
236+ * // returns 1.0
237+ *
238+ * @example
239+ * var v = variance( 4.0, 12.0 );
240+ * // returns ~0.028
241+ *
242+ * @example
243+ * var v = variance( 8.0, 2.0 );
244+ * // returns 2.0
245+ *
246+ * @example
247+ * var v = variance( 1.0, -0.1 );
248+ * // returns NaN
249+ *
250+ * @example
251+ * var v = variance( -0.1, 1.0 );
252+ * // returns NaN
253+ *
254+ * @example
255+ * var v = variance( 2.0, NaN );
256+ * // returns NaN
257+ *
258+ * @example
259+ * var v = variance( NaN, 2.0 );
260+ * // returns NaN
261+ */
262+ function variance( alpha, beta ) {
263+ return addon( alpha, beta );
264+ }
265+
266+
267+ // EXPORTS //
268+
269+ module.exports = variance;
270+ </ pre > </ td > </ tr > </ table > </ pre >
271+
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274+ < div class ='footer quiet pad2 space-top1 center small '>
275+ Code coverage generated by
276+ < a href ="https://istanbul.js.org/ " target ="_blank " rel ="noopener noreferrer "> istanbul</ a >
277+ at 2025-04-06T00:33:40.438Z
278+ </ div >
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