All files eps1.js

100% Statements 50/50
100% Branches 4/4
100% Functions 1/1
100% Lines 50/50

Press n or j to go to the next uncovered block, b, p or k for the previous block.

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 511x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 717x 717x 717x 619x 619x 98x 98x 717x 1x 1x 1x 1x 1x  
/**
* @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 abs = require( '@stdlib/math/base/special/abs' );
var ln = require( '@stdlib/math/base/special/ln' );
var lambdaeta = require( './lambdaeta.js' );
var rateval = require( './rational_ak0bk0.js' );
 
 
// MAIN //
 
/**
* Evaluates the `eps1` function.
*
* @private
* @param {number} eta - eta value
* @returns {number} function value
*/
function eps1( eta ) {
	var la;
	if ( abs( eta ) < 1.0 ) {
		return rateval( eta );
	}
	la = lambdaeta( eta );
	return ln( eta / ( la - 1.0 ) ) / eta;
}
 
 
// EXPORTS //
 
module.exports = eps1;