range.js (1189B)
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 // MAIN // 22 23 /** 24 * Returns the arithmetic range. 25 * 26 * @private 27 * @param {ndarrayLike} arr - input array 28 * @param {number} j - column index for which to get the range 29 * @param {number} len - number of rows in arr 30 * @returns {NumericArray} arithmetic range 31 */ 32 function range( arr, j, len ) { 33 var min; 34 var max; 35 var x; 36 var i; 37 38 min = arr.get( 0, j ); 39 max = min; 40 for ( i = 1; i < len; i++ ) { 41 x = arr.get( i, j ); 42 if ( x < min ) { 43 min = x; 44 } else if ( x > max ) { 45 max = x; 46 } 47 } 48 return [ min, max ]; 49 } 50 51 52 // EXPORTS // 53 54 module.exports = range;