text: /**
  * @license Apache-2.0
  *
  * Copyright (c) 2018 The Stdlib Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  
  'use strict';
  
  // MODULES //
  
  var isnan = require( '@stdlib/math/base/assert/is-nan' );
  
  
  // MAIN //
  
  /**
  * Returns the skewness of a Student's t distribution.
  *
  * @param {NonNegativeNumber} v - degrees of freedom
  * @returns {NonNegativeNumber} skewness
  *
  * @example
  * var v = skewness( 9.0 );
  * // returns 0.0
  *
  * @example
  * var v = skewness( 4.0 );
  * // returns 0.0
  *
  * @example
  * var v = skewness( 0.5 );
  * // returns NaN
  *
  * @example
  * var v = skewness( -0.2 );
  * // returns NaN
  *
  * @example
  * var v = skewness( NaN );
  * // returns NaN
  */
  function skewness( v ) {
  	if ( isnan( v ) || v <= 3.0 ) {
  		return NaN;
  	}
  	return 0.0;
  }
  
  
  // EXPORTS //
  
  module.exports = skewness;
  