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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3017x 3017x 10x 10x 3007x 3017x 3x 3x 3x 3x 3x | /**
* @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 isNonNegativeInteger = require( '@stdlib/math/base/assert/is-nonnegative-integer' );
var constantFunction = require( '@stdlib/utils/constant-function' );
var factoryGamma = require( '@stdlib/stats/base/dists/gamma/quantile' ).factory;
// MAIN //
/**
* Returns a function for evaluating the quantile function for an Erlang distribution with shape parameter `k` and rate parameter `lambda`.
*
* @param {NonNegativeInteger} k - shape parameter
* @param {PositiveNumber} lambda - rate parameter
* @returns {Function} quantile function
*
* @example
* var quantile = factory( 2, 0.5 );
* var y = quantile( 0.5 );
* // returns ~3.357
*
* y = quantile( 0.8 );
* // returns ~5.989
*/
function factory( k, lambda ) {
if ( !isNonNegativeInteger( k ) ) {
return constantFunction( NaN );
}
return factoryGamma( k, lambda );
}
// EXPORTS //
module.exports = factory;
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