Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /**
* @license Apache-2.0
*
* Copyright (c) 2024 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 iterationOrder = require( '@stdlib/ndarray/base/iteration-order' );
var ndarray2object = require( '@stdlib/ndarray/base/ndarraylike2object' );
var numel = require( '@stdlib/ndarray/base/numel' );
var blockedaccessorForEach2d = require( './2d_blocked_accessors.js' );
var blockedaccessorForEach3d = require( './3d_blocked_accessors.js' );
var blockedaccessorForEach4d = require( './4d_blocked_accessors.js' );
var blockedaccessorForEach5d = require( './5d_blocked_accessors.js' );
var blockedaccessorForEach6d = require( './6d_blocked_accessors.js' );
var blockedaccessorForEach7d = require( './7d_blocked_accessors.js' );
var blockedaccessorForEach8d = require( './8d_blocked_accessors.js' );
var blockedaccessorForEach9d = require( './9d_blocked_accessors.js' );
var blockedaccessorForEach10d = require( './10d_blocked_accessors.js' );
var blockedForEach2d = require( './2d_blocked.js' );
var blockedForEach3d = require( './3d_blocked.js' );
var blockedForEach4d = require( './4d_blocked.js' );
var blockedForEach5d = require( './5d_blocked.js' );
var blockedForEach6d = require( './6d_blocked.js' );
var blockedForEach7d = require( './7d_blocked.js' );
var blockedForEach8d = require( './8d_blocked.js' );
var blockedForEach9d = require( './9d_blocked.js' );
var blockedForEach10d = require( './10d_blocked.js' );
var accessorForEach0d = require( './0d_accessors.js' );
var accessorForEach1d = require( './1d_accessors.js' );
var accessorForEach2d = require( './2d_accessors.js' );
var accessorForEach3d = require( './3d_accessors.js' );
var accessorForEach4d = require( './4d_accessors.js' );
var accessorForEach5d = require( './5d_accessors.js' );
var accessorForEach6d = require( './6d_accessors.js' );
var accessorForEach7d = require( './7d_accessors.js' );
var accessorForEach8d = require( './8d_accessors.js' );
var accessorForEach9d = require( './9d_accessors.js' );
var accessorForEach10d = require( './10d_accessors.js' );
var accessorForEachnd = require( './nd_accessors.js' );
var forEach0d = require( './0d.js' );
var forEach1d = require( './1d.js' );
var forEach2d = require( './2d.js' );
var forEach3d = require( './3d.js' );
var forEach4d = require( './4d.js' );
var forEach5d = require( './5d.js' );
var forEach6d = require( './6d.js' );
var forEach7d = require( './7d.js' );
var forEach8d = require( './8d.js' );
var forEach9d = require( './9d.js' );
var forEach10d = require( './10d.js' );
var forEachnd = require( './nd.js' );
// VARIABLES //
var FOR_EACH = [
forEach0d,
forEach1d,
forEach2d,
forEach3d,
forEach4d,
forEach5d,
forEach6d,
forEach7d,
forEach8d,
forEach9d,
forEach10d
];
var ACCESSOR_FOR_EACH = [
accessorForEach0d,
accessorForEach1d,
accessorForEach2d,
accessorForEach3d,
accessorForEach4d,
accessorForEach5d,
accessorForEach6d,
accessorForEach7d,
accessorForEach8d,
accessorForEach9d,
accessorForEach10d
];
var BLOCKED_FOR_EACH = [
blockedForEach2d, // 0
blockedForEach3d,
blockedForEach4d,
blockedForEach5d,
blockedForEach6d,
blockedForEach7d,
blockedForEach8d,
blockedForEach9d,
blockedForEach10d // 8
];
var BLOCKED_ACCESSOR_FOR_EACH = [
blockedaccessorForEach2d, // 0
blockedaccessorForEach3d,
blockedaccessorForEach4d,
blockedaccessorForEach5d,
blockedaccessorForEach6d,
blockedaccessorForEach7d,
blockedaccessorForEach8d,
blockedaccessorForEach9d,
blockedaccessorForEach10d // 8
];
var MAX_DIMS = FOR_EACH.length - 1;
// MAIN //
/**
* Invokes a callback function once for each ndarray element.
*
* ## Notes
*
* - A provided ndarray should be an `object` with the following properties:
*
* - **dtype**: data type.
* - **data**: data buffer.
* - **shape**: dimensions.
* - **strides**: stride lengths.
* - **offset**: index offset.
* - **order**: specifies whether an ndarray is row-major (C-style) or column major (Fortran-style).
*
* @param {ArrayLikeObject<Object>} arrays - array-like object containing one input array
* @param {Callback} fcn - callback function
* @param {*} [thisArg] - callback function execution context
* @returns {void}
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
* var naryFunction = require( '@stdlib/utils/nary-function' );
* var log = require( '@stdlib/console/log' );
*
* // Create a data buffer:
* var xbuf = new Float64Array( 12 );
*
* // Define the shape of the array:
* var shape = [ 3, 1, 2 ];
*
* // Define the array strides:
* var sx = [ 4, 4, 1 ];
*
* // Define the index offset:
* var ox = 1;
*
* // Create an ndarray-like object:
* var x = {
* 'ref': null,
* 'dtype': 'float64',
* 'data': xbuf,
* 'shape': shape,
* 'strides': sx,
* 'offset': ox,
* 'order': 'row-major'
* };
*
* // Apply the callback function:
* forEach( [ x ], naryFunction( log, 1 ) );
*/
function forEach( arrays, fcn, thisArg ) {
var ndims;
var shx;
var x;
// Unpack the ndarray and standardize ndarray meta data:
x = ndarray2object( arrays[ 0 ] );
shx = x.shape;
ndims = shx.length;
// Determine whether we can avoid iteration altogether...
if ( ndims === 0 ) {
if ( x.accessorProtocol ) {
return ACCESSOR_FOR_EACH[ ndims ]( x, fcn, thisArg );
}
return FOR_EACH[ ndims ]( x, fcn, thisArg );
}
// Check whether we were provided an empty ndarray...
if ( numel( shx ) === 0 ) {
return;
}
// Determine whether we can avoid blocked iteration...
if ( ndims <= MAX_DIMS && iterationOrder( x.strides ) !== 0 ) {
// So long as iteration always moves in the same direction (i.e., no mixed sign strides), we can leverage cache-optimal (i.e., normal) nested loops without resorting to blocked iteration...
if ( x.accessorProtocol ) {
return ACCESSOR_FOR_EACH[ ndims ]( x, fcn, thisArg );
}
return FOR_EACH[ ndims ]( x, fcn, thisArg );
}
// Determine whether we can perform blocked iteration...
if ( ndims <= MAX_DIMS ) {
if ( x.accessorProtocol ) {
return BLOCKED_ACCESSOR_FOR_EACH[ ndims-2 ]( x, fcn, thisArg );
}
return BLOCKED_FOR_EACH[ ndims-2 ]( x, fcn, thisArg );
}
// Fall-through to linear view iteration without regard for how data is stored in memory (i.e., take the slow path)...
if ( x.accessorProtocol ) {
return accessorForEachnd( x, fcn, thisArg );
}
forEachnd( x, fcn, thisArg );
}
// EXPORTS //
module.exports = forEach;
|