time-to-botec

Benchmark sampling in different programming languages
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max.js (1984B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 'use strict';
     20 
     21 // MODULES //
     22 
     23 var isPositiveZero = require( './../../../../base/assert/is-positive-zero' );
     24 var isnan = require( './../../../../base/assert/is-nan' );
     25 var NINF = require( '@stdlib/constants/float64/ninf' );
     26 var PINF = require( '@stdlib/constants/float64/pinf' );
     27 
     28 
     29 // MAIN //
     30 
     31 /**
     32 * Returns the maximum value.
     33 *
     34 * @param {number} [x] - first number
     35 * @param {number} [y] - second number
     36 * @param {...number} [args] - numbers
     37 * @returns {number} maximum value
     38 *
     39 * @example
     40 * var v = max( 3.14, 4.2 );
     41 * // returns 4.2
     42 *
     43 * @example
     44 * var v = max( 5.9, 3.14, 4.2 );
     45 * // returns 5.9
     46 *
     47 * @example
     48 * var v = max( 3.14, NaN );
     49 * // returns NaN
     50 *
     51 * @example
     52 * var v = max( +0.0, -0.0 );
     53 * // returns +0.0
     54 */
     55 function max( x, y ) {
     56 	var len;
     57 	var m;
     58 	var v;
     59 	var i;
     60 
     61 	len = arguments.length;
     62 	if ( len === 2 ) {
     63 		if ( isnan( x ) || isnan( y ) ) {
     64 			return NaN;
     65 		}
     66 		if ( x === PINF || y === PINF ) {
     67 			return PINF;
     68 		}
     69 		if ( x === y && x === 0.0 ) {
     70 			if ( isPositiveZero( x ) ) {
     71 				return x;
     72 			}
     73 			return y;
     74 		}
     75 		if ( x > y ) {
     76 			return x;
     77 		}
     78 		return y;
     79 	}
     80 	m = NINF;
     81 	for ( i = 0; i < len; i++ ) {
     82 		v = arguments[ i ];
     83 		if ( isnan( v ) || v === PINF ) {
     84 			return v;
     85 		}
     86 		if ( v > m ) {
     87 			m = v;
     88 		} else if (
     89 			v === m &&
     90 			v === 0.0 &&
     91 			isPositiveZero( v )
     92 		) {
     93 			m = v;
     94 		}
     95 	}
     96 	return m;
     97 }
     98 
     99 
    100 // EXPORTS //
    101 
    102 module.exports = max;