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' );
  var isInteger = require( '@stdlib/math/base/assert/is-integer' );
  var MAX_FIBONACCI = require( '@stdlib/constants/math/float64-max-safe-nth-fibonacci' );
  var FIBONACCI = require( './fibonacci.json' );
  
  
  // MAIN //
  
  /**
  * Computes the nth Fibonacci number.
  *
  * @param {NonNegativeInteger} n - the Fibonacci number to compute
  * @returns {NonNegativeInteger} Fibonacci number
  *
  * @example
  * var y = fibonacci( 0 );
  * // returns 0
  *
  * @example
  * var y = fibonacci( 1 );
  * // returns 1
  *
  * @example
  * var y = fibonacci( 2 );
  * // returns 1
  *
  * @example
  * var y = fibonacci( 3 );
  * // returns 2
  *
  * @example
  * var y = fibonacci( 4 );
  * // returns 3
  *
  * @example
  * var y = fibonacci( 5 );
  * // returns 5
  *
  * @example
  * var y = fibonacci( 6 );
  * // returns 8
  *
  * @example
  * var y = fibonacci( NaN );
  * // returns NaN
  *
  * @example
  * var y = fibonacci( 3.14 );
  * // returns NaN
  *
  * @example
  * var y = fibonacci( -1.0 );
  * // returns NaN
  */
  function fibonacci( n ) {
  	if (
  		isnan( n ) ||
  		isInteger( n ) === false ||
  		n < 0 ||
  		n > MAX_FIBONACCI
  	) {
  		return NaN;
  	}
  	return FIBONACCI[ n ];
  }
  
  
  // EXPORTS //
  
  module.exports = fibonacci;
  