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Original file line number Diff line number Diff line change
@@ -0,0 +1,119 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2026 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.
*/

/* eslint-disable max-len */

'use strict';

var Float64Array = require( '@stdlib/array/float64' );
var ndarray2array = require( '@stdlib/ndarray/base/to-array' );
var gwxpy = require( '@stdlib/blas/ext/base/ndarray/gwxpy' );
var strategy = require( '@stdlib/ndarray/base/kernels/generic/unary-strided1d/strategy' );
var kernel = require( './../lib' );

// Create data buffers:
var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 ] );
var ybuf = new Float64Array( [ 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0 ] );
var zbuf = new Float64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );

// Define the array shapes:
var xsh = [ 1, 1, 1, 1, 3, 2, 2 ];
var ysh = [ 1, 1, 1, 1, 3, 2, 2 ];
var zsh = [ 1, 1, 1, 1, 3, 2, 2 ];

// Define the array strides:
var sx = [ 12, 12, 12, 12, 4, 2, 1 ];
var sy = [ 12, 12, 12, 12, 4, 2, 1 ];
var sz = [ 12, 12, 12, 12, 4, 2, 1 ];

// Define the index offsets:
var ox = 0;
var oy = 0;
var oz = 0;

// Create the input ndarray descriptors:
var x = {
'dtype': 'float64',
'data': xbuf,
'shape': xsh,
'strides': sx,
'offset': ox,
'order': 'row-major'
};

var y = {
'dtype': 'float64',
'data': ybuf,
'shape': ysh,
'strides': sy,
'offset': oy,
'order': 'row-major'
};

// Create an output ndarray descriptor:
var z = {
'dtype': 'float64',
'data': zbuf,
'shape': zsh,
'strides': sz,
'offset': oz,
'order': 'row-major'
};

// Initialize ndarray descriptors representing subarray views:
var views = [
{
'dtype': x.dtype,
'data': x.data,
'shape': [ 2, 2 ],
'strides': [ 2, 1 ],
'offset': x.offset,
'order': x.order
},
{
'dtype': y.dtype,
'data': y.data,
'shape': [ 2, 2 ],
'strides': [ 2, 1 ],
'offset': y.offset,
'order': y.order
},
{
'dtype': z.dtype,
'data': z.data,
'shape': [ 2, 2 ],
'strides': [ 2, 1 ],
'offset': z.offset,
'order': z.order
}
];

// Resolve input/output strategies when iterating over subarray views:
var strategyX = strategy( views[ 0 ] );
var strategyY = strategy( views[ 1 ] );
var strategyZ = strategy( views[ 2 ] );

// Resolve a kernel:
var f = kernel( 5 );

// Apply strided function:
f( gwxpy, [ x, y, z ], views, [ 1, 1, 1, 1, 3 ], [ 12, 12, 12, 12, 4 ], [ 12, 12, 12, 12, 4 ], [ 12, 12, 12, 12, 4 ], strategyX, strategyY, strategyZ, {} );

console.log( ndarray2array( x.data, x.shape, x.strides, x.offset, x.order ) );
console.log( ndarray2array( y.data, y.shape, y.strides, y.offset, y.order ) );
console.log( ndarray2array( z.data, z.shape, z.strides, z.offset, z.order ) );
Original file line number Diff line number Diff line change
@@ -0,0 +1,137 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2026 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';

// MAIN //

/**
* Applies a one-dimensional strided array function to a list of specified dimensions in two input ndarrays and assigns results to a provided output ndarray.
*
* ## Notes
*
* - The `views`, `shape`, `stridesX`, `stridesY`, and `stridesZ` parameters are unused. Providing empty arrays for these parameters is recommended in order to ensure a monomorphic API.
*
* @private
* @param {Function} fcn - wrapper for a one-dimensional strided array function
* @param {Array<Object>} arrays - ndarray descriptors
* @param {Array<Object>} views - initialized ndarray descriptors representing subarray views
* @param {Array<integer>} shape - loop dimensions
* @param {Array<integer>} stridesX - loop dimension strides for the first input ndarray
* @param {Array<integer>} stridesY - loop dimension strides for the second input ndarray
* @param {Array<integer>} stridesZ - loop dimension strides for the output ndarray
* @param {Object} strategyX - strategy for marshaling data to and from a first input ndarray view
* @param {Object} strategyY - strategy for marshaling data to and from a second input ndarray view
* @param {Object} strategyZ - strategy for marshaling data to and from an output ndarray view
* @param {Options} opts - function options
* @returns {void}
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
* var ndarray2array = require( '@stdlib/ndarray/base/to-array' );
* var gwxpy = require( '@stdlib/blas/ext/base/ndarray/gwxpy' );
*
* // Create data buffers:
* var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
* var ybuf = new Float64Array( [ 2.0, 3.0, 4.0, 5.0 ] );
* var zbuf = new Float64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
*
* // Define the array shapes:
* var xsh = [ 2, 2 ];
* var ysh = [ 2, 2 ];
* var zsh = [ 2, 2 ];
*
* // Define the array strides:
* var sx = [ 2, 1 ];
* var sy = [ 2, 1 ];
* var sz = [ 2, 1 ];
*
* // Define the index offsets:
* var ox = 0;
* var oy = 0;
* var oz = 0;
*
* // Create the input ndarray descriptors:
* var x = {
* 'dtype': 'float64',
* 'data': xbuf,
* 'shape': xsh,
* 'strides': sx,
* 'offset': ox,
* 'order': 'row-major'
* };
*
* var y = {
* 'dtype': 'float64',
* 'data': ybuf,
* 'shape': ysh,
* 'strides': sy,
* 'offset': oy,
* 'order': 'row-major'
* };
*
* // Create an output ndarray descriptor:
* var z = {
* 'dtype': 'float64',
* 'data': zbuf,

Check warning on line 91 in lib/node_modules/@stdlib/ndarray/base/kernels/generic/binary-strided1d/unblocked/lib/0d.js

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GitHub Actions / Lint Changed Files

Unknown word: "zbuf"
* 'shape': zsh,
* 'strides': sz,
* 'offset': oz,
* 'order': 'row-major'
* };
*
* // Define an input strategy:
* function inputStrategy( x ) {
* return {
* 'dtype': x.dtype,
* 'data': x.data,
* 'shape': [ 4 ],
* 'strides': [ 1 ],
* 'offset': x.offset,
* 'order': x.order
* };
* }
*
* // Define an output strategy:
* function outputStrategy( x ) {
* return x;
* }
*
* var strategy = {
* 'input': inputStrategy,
* 'output': outputStrategy
* };
*
* // Apply strided function:
* kernel( gwxpy, [ x, y, z ], [], [], [], [], [], strategy, strategy, strategy, {} );
*
* var v = z.data;
* // returns <Float64Array>[ 3.0, 5.0, 7.0, 9.0 ]
*/
function kernel( fcn, arrays, views, shape, stridesX, stridesY, stridesZ, strategyX, strategyY, strategyZ, opts ) { // eslint-disable-line max-len, max-params
arrays[ 0 ] = strategyX.input( arrays[ 0 ] );
arrays[ 1 ] = strategyY.input( arrays[ 1 ] );
arrays[ 2 ] = strategyZ.input( arrays[ 2 ] );
fcn( arrays, opts );
strategyZ.output( arrays[ 2 ] );
}


// EXPORTS //

module.exports = kernel;
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