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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 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x | /** * @license Apache-2.0 * * Copyright (c) 2025 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 dtypes = require( '@stdlib/ndarray/dtypes' ); var gindexOf = require( '@stdlib/blas/ext/base/ndarray/gindex-of' ); var dindexOf = require( '@stdlib/blas/ext/base/ndarray/dindex-of' ); var sindexOf = require( '@stdlib/blas/ext/base/ndarray/sindex-of' ); var factory = require( '@stdlib/ndarray/base/unary-reduce-strided1d-dispatch-factory' ); // VARIABLES // var idtypes0 = dtypes( 'numeric_and_generic' ); // input ndarray var idtypes1 = dtypes( 'numeric_and_generic' ); // search element ndarray var idtypes2 = dtypes( 'integer_index_and_generic' ); // from index ndarray var odtypes = dtypes( 'integer_index_and_generic' ); var policies = { 'output': 'integer_index_and_generic', 'casting': 'none' }; var table = { 'types': [ 'float64', 'float32' // FIXME: add specialized support for `cindexOf` and `zindexOf` once the corresponding packages are implemented ], 'fcns': [ dindexOf, sindexOf ], 'default': gindexOf }; // MAIN // /** * Returns the first index of a specified search element along one or more ndarray dimensions. * * @private * @name indexOf * @type {Function} * @param {ndarrayLike} x - input ndarray * @param {ndarrayLike} searchElement - search element * @param {ndarrayLike} fromIndex - indices from which to begin searching * @param {Options} [options] - function options * @param {IntegerArray} [options.dims] - list of dimensions over which to perform operation * @param {string} [options.dtype] - output ndarray data type * @throws {TypeError} first argument must be an ndarray-like object * @throws {TypeError} second argument must be either an ndarray-like object * @throws {TypeError} third argument must be either an ndarray-like object * @throws {TypeError} options argument must be an object * @throws {RangeError} dimension indices must not exceed input ndarray bounds * @throws {RangeError} number of dimension indices must not exceed the number of input ndarray dimensions * @throws {Error} must provide valid options * @returns {ndarray} output ndarray * * @example * var Float64Array = require( '@stdlib/array/float64' ); * var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' ); * var ndarray = require( '@stdlib/ndarray/ctor' ); * * // Create a data buffer: * var xbuf = new Float64Array( [ 1.0, 2.0, -3.0, 4.0, -5.0, 6.0 ] ); * * // Define the shape of the input array: * var sh = [ 3, 1, 2 ]; * * // Define the array strides: * var sx = [ 2, 2, 1 ]; * * // Define the index offset: * var ox = 0; * * // Create an input ndarray: * var x = new ndarray( 'float64', xbuf, sh, sx, ox, 'row-major' ); * * // Create a search element ndarray: * var searchElement = scalar2ndarray( 4.0, { * 'dtype': 'float64' * }) * * // Create a from index ndarray: * var fromIndex = scalar2ndarray( 0, { * 'dtype': 'int32' * }) * * // Find index: * var out = indexOf( x, searchElement, fromIndex ); * // returns <ndarray> * * var idx = out.get(); * // returns 3 */ var indexOf = factory( table, [ idtypes0, idtypes1, idtypes2 ], odtypes, policies ); // eslint-disable-line max-len // EXPORTS // module.exports = indexOf; |