table.native.js (1807B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2020 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 isTypedArrayLike = require( '@stdlib/assert/is-typed-array-like' ); 24 var serialize = require( '@stdlib/ndarray/base/serialize-meta-data' ); 25 var copy = require( '@stdlib/utils/copy' ); 26 var addon = require( './../src/addon.node' ); 27 var TABLE = require( './table.js' ); 28 29 30 // VARIABLES // 31 32 var table = copy( TABLE, 1 ); 33 var js = table.ndarray; 34 table.ndarray = unary; 35 36 37 // FUNCTIONS // 38 39 /** 40 * Applies a unary function to an input ndarray and assigns results to an output ndarray. 41 * 42 * @private 43 * @param {ndarray} x - input array 44 * @param {ndarray} y - output array 45 * @returns {ndarray} output array 46 */ 47 function unary( x, y ) { 48 var xdata = x.data; 49 var ydata = y.data; 50 51 // WARNING: we assume that, if we're provided something which has a data buffer resembling a typed array, we're provided a typed ndarray buffer; however, this can lead to potential unintended errors as the native add-on cannot work with non-typed array objects (e.g., generic arrays)... 52 if ( !( isTypedArrayLike( xdata ) && isTypedArrayLike( ydata ) ) ) { 53 return js( x, y ); 54 } 55 addon( xdata, serialize( x ), ydata, serialize( y ) ); 56 return y; 57 } 58 59 60 // EXPORTS // 61 62 module.exports = table;