diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/README.md b/lib/node_modules/@stdlib/ndarray/base/atleastnd/README.md new file mode 100644 index 000000000000..d49e4ce536a1 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/README.md @@ -0,0 +1,113 @@ + + +# atleastnd + +> Convert the inputs to ndarrays having at least the provided number of dimensions. + +
+ +
+ + + +
+ +## Usage + +```javascript +var atleastnd = require( '@stdlib/ndarray/base/atleastnd' ); +``` + +#### atleastnd( ndims, arrays ) + +Converts the inputs to ndarrays having at least the provided number of dimensions. + + + +```javascript +var array = require( '@stdlib/ndarray/array' ); + +var x = array( [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] ); +// returns [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] + +var y = array( [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] ); +// returns [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] + +var out = atleastnd( 3, [ x, y ] ); +// returns [ , ] +``` + +The function accepts the following arguments: + +- **ndims**: minimum number of dimensions. +- **arrays**: array-like object containing a list of arrays. + +
+ + + +
+ +
+ + + +
+ +## Examples + + + +```javascript +var discreteUniform = require( '@stdlib/random/discrete-uniform' ); +var ndarray2array = require( '@stdlib/ndarray/to-array' ); +var atleastnd = require( '@stdlib/ndarray/base/atleastnd' ); + +var x = discreteUniform( [ 2, 2, 2 ], -100, 100 ); +// returns + +var y = discreteUniform( [ 5, 2 ], -100, 100 ); +// returns + +var out = atleastnd( 3, [ x, y ] ); +// returns [ , ] + +console.log( ndarray2array( out[ 0 ] ) ); +console.log( ndarray2array( out[ 1 ] ) ); +``` + +
+ + + + + +
+ +
+ + + +
+ +
+ + diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/benchmark/benchmark.js b/lib/node_modules/@stdlib/ndarray/base/atleastnd/benchmark/benchmark.js new file mode 100644 index 000000000000..bdca3c6e1058 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/benchmark/benchmark.js @@ -0,0 +1,103 @@ +/** +* @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'; + +// MODULES // + +var bench = require( '@stdlib/bench' ); +var Float64Array = require( '@stdlib/array/float64' ); +var ndarrayBase = require( '@stdlib/ndarray/base/ctor' ); +var ndarray = require( '@stdlib/ndarray/ctor' ); +var isndarrayLike = require( '@stdlib/assert/is-ndarray-like' ); +var format = require( '@stdlib/string/format' ); +var pkg = require( './../package.json' ).name; +var atleastnd = require( './../lib' ); + + +// MAIN // + +bench( format( '%s::base_ndarray:ndims=2', pkg ), function benchmark( b ) { + var values; + var buffer; + var offset; + var dtype; + var order; + var out; + var i; + + dtype = 'float64'; + buffer = new Float64Array( 12 ); + offset = 0; + order = 'row-major'; + + values = [ + ndarrayBase( dtype, buffer, [ 3, 2, 2 ], [ 4, 2, 1 ], offset, order ), + ndarrayBase( dtype, buffer, [ 4, 3 ], [ 3, 1 ], offset, order ), + ndarrayBase( dtype, buffer, [ 12 ], [ 1 ], offset, order ) + ]; + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + out = atleastnd( 2, [ 10.0, values[ i%values.length ] ] ); + if ( typeof out !== 'object' ) { + b.fail( 'should return an object' ); + } + } + b.toc(); + if ( !isndarrayLike( out[ 0 ] ) || !isndarrayLike( out[ 1 ] ) ) { + b.fail( 'should return an array of ndarrays' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); + +bench( format( '%s::ndarray:ndims=2', pkg ), function benchmark( b ) { + var values; + var buffer; + var offset; + var dtype; + var order; + var out; + var i; + + dtype = 'float64'; + buffer = new Float64Array( 12 ); + offset = 0; + order = 'row-major'; + + values = [ + ndarray( dtype, buffer, [ 3, 2, 2 ], [ 4, 2, 1 ], offset, order ), + ndarray( dtype, buffer, [ 4, 3 ], [ 3, 1 ], offset, order ), + ndarray( dtype, buffer, [ 12 ], [ 1 ], offset, order ) + ]; + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + out = atleastnd( 2, [ 10.0, values[ i%values.length ] ] ); + if ( typeof out !== 'object' ) { + b.fail( 'should return an object' ); + } + } + b.toc(); + if ( !isndarrayLike( out[ 0 ] ) || !isndarrayLike( out[ 1 ] ) ) { + b.fail( 'should return an array of ndarrays' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/repl.txt b/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/repl.txt new file mode 100644 index 000000000000..9d28a32f58df --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/repl.txt @@ -0,0 +1,29 @@ + +{{alias}}( ndims, arrays ) + Converts the inputs to ndarrays having at least the provided number of + dimensions. + + Parameters + ---------- + ndims: number + Minimum number of dimensions. + + arrays: ArrayLikeObject + List of arrays. + + Returns + ------- + out: Array + List of arrays. + + Examples + -------- + > var x = {{alias:@stdlib/ndarray/array}}( [ [ 1, 2 ], [ 3, 4 ] ] ) + [ [ 1, 2 ], [ 3, 4 ] ] + > var y = {{alias:@stdlib/ndarray/array}}( [ 5, 6, 7, 8 ] ) + [ 5, 6, 7, 8 ] + > var out = {{alias}}( 3, [ x, y ] ) + [ , ] + + See Also + -------- diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/types/index.d.ts b/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/types/index.d.ts new file mode 100644 index 000000000000..ae512a75c731 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/types/index.d.ts @@ -0,0 +1,49 @@ +/* +* @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. +*/ + +// TypeScript Version: 4.1 + +/// + +import { ndarray } from '@stdlib/types/ndarray'; + +/** +* Converts the inputs to ndarrays having at least the provided number of dimensions. +* +* @param ndims - minimum number of dimensions +* @param arrays - array-like object containing a list of arrays +* @returns output arrays +* +* @example +* var array = require( '@stdlib/ndarray/array' ); +* +* var x = array( [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] ); +* // returns [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] +* +* var y = array( [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] ); +* // returns [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] +* +* var out = atleastnd( 3, [ x, y ] ); +* // returns [ , ] +*/ +declare function atleastnd( ndims: number, arrays: Array ): Array; + + +// EXPORTS // + +export = atleastnd; diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/types/test.ts b/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/types/test.ts new file mode 100644 index 000000000000..2f368973c109 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/docs/types/test.ts @@ -0,0 +1,68 @@ +/* +* @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. +*/ + +import zeros = require( '@stdlib/ndarray/zeros' ); +import atleastnd = require( './index' ); + + +// TESTS // + +// The function returns an array of ndarrays... +{ + const x = zeros( [ 2, 2 ] ); + const y = zeros( [ 2, 2, 2 ] ); + + atleastnd( 3, [ x ] ); // $ExpectType ndarray[] + atleastnd( 3, [ x, y ] ); // $ExpectType ndarray[] + atleastnd( 3, [ x, y, x ] ); // $ExpectType ndarray[] +} + +// The compiler throws an error if the function is not provided a first argument which is a number... +{ + const x = zeros( [ 2, 2 ] ); + const y = zeros( [ 2, 2, 2 ] ); + + atleastnd( '5', [ x, y ] ); // $ExpectError + atleastnd( true, [ x, y ] ); // $ExpectError + atleastnd( false, [ x, y ] ); // $ExpectError + atleastnd( null, [ x, y ] ); // $ExpectError + atleastnd( {}, [ x, y ] ); // $ExpectError + atleastnd( [ '5' ], [ x, y ] ); // $ExpectError + atleastnd( ( x: number ): number => x, [ x, y ] ); // $ExpectError +} + +// The compiler throws an error if the function is not provided a second argument which is an array ... +{ + atleastnd( 3, '5' ); // $ExpectError + atleastnd( 3, 5 ); // $ExpectError + atleastnd( 3, true ); // $ExpectError + atleastnd( 3, false ); // $ExpectError + atleastnd( 3, null ); // $ExpectError + atleastnd( 3, {} ); // $ExpectError + atleastnd( 3, ( x: number ): number => x ); // $ExpectError +} + +// The compiler throws an error if the function is provided an unsupported number of arguments... +{ + const x = zeros( [ 2, 2 ] ); + const y = zeros( [ 2, 2, 2 ] ); + + atleastnd(); // $ExpectError + atleastnd( 3 ); // $ExpectError + atleastnd( 3, [ x, y ], {} ); // $ExpectError +} diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/examples/index.js b/lib/node_modules/@stdlib/ndarray/base/atleastnd/examples/index.js new file mode 100644 index 000000000000..51c237037f94 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/examples/index.js @@ -0,0 +1,35 @@ +/** +* @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'; + +var discreteUniform = require( '@stdlib/random/discrete-uniform' ); +var ndarray2array = require( '@stdlib/ndarray/to-array' ); +var atleastnd = require( './../lib' ); + +var x = discreteUniform( [ 3, 2, 2 ], -100, 100 ); +// returns + +var y = discreteUniform( [ 5, 2 ], -100, 100 ); +// returns + +var out = atleastnd( 3, [ x, y ] ); +// returns [ , ] + +console.log( ndarray2array( out[ 0 ] ) ); +console.log( ndarray2array( out[ 1 ] ) ); diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/lib/index.js b/lib/node_modules/@stdlib/ndarray/base/atleastnd/lib/index.js new file mode 100644 index 000000000000..ffa3b22ebecc --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/lib/index.js @@ -0,0 +1,47 @@ +/** +* @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'; + +/** +* Convert the inputs to ndarrays having at least the provided number of dimensions. +* +* @module @stdlib/ndarray/base/atleastnd +* +* @example +* var array = require( '@stdlib/ndarray/array' ); +* var atleastnd = require( '@stdlib/ndarray/base/atleastnd' ); +* +* var x = array( [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] ); +* // returns [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] +* +* var y = array( [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] ); +* // returns [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] +* +* var out = atleastnd( 3, [ x, y ] ); +* // returns [ , ] +*/ + +// MODULES // + +var main = require( './main.js' ); + + +// EXPORTS // + +module.exports = main; diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/lib/main.js b/lib/node_modules/@stdlib/ndarray/base/atleastnd/lib/main.js new file mode 100644 index 000000000000..0b13d1d42368 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/lib/main.js @@ -0,0 +1,107 @@ +/** +* @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'; + +// MODULES // + +var isndarrayLike = require( '@stdlib/assert/is-ndarray-like' ); +var broadcastScalar = require( '@stdlib/ndarray/base/broadcast-scalar' ); +var dims = require( '@stdlib/ndarray/base/ndims' ); +var defaults = require( '@stdlib/ndarray/defaults' ); +var ndarray = require( '@stdlib/ndarray/base/ctor' ); +var getShape = require( '@stdlib/ndarray/base/shape' ); +var getStrides = require( '@stdlib/ndarray/base/strides' ); +var getOffset = require( '@stdlib/ndarray/base/offset' ); +var getOrder = require( '@stdlib/ndarray/base/order' ); +var getDType = require( '@stdlib/ndarray/base/dtype' ); +var getData = require( '@stdlib/ndarray/base/data-buffer' ); +var ones = require( '@stdlib/array/base/ones' ); + + +// VARIABLES // + +var DTYPE = defaults.get( 'dtypes.default' ); +var ORDER = defaults.get( 'order' ); + + +// MAIN // + +/** +* Converts the inputs to ndarrays having at least the provided number of dimensions. +* +* @param {NonNegativeInteger} ndims - minimum number of dimensions +* @param {ArrayLikeObject} arrays - array-like object containing a list of arrays +* @returns {ArrayLikeObject} output arrays +* +* @example +* var array = require( '@stdlib/ndarray/array' ); +* +* var x = array( [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] ); +* // returns [ [ [ 1.0, 2.0 ] ], [ [ 3.0, 4.0 ] ] ] +* +* var y = array( [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] ); +* // returns [ [ 5.0, 6.0 ], [ 7.0, 8.0 ] ] +* +* var out = atleastnd( 3, [ x, y ] ); +* // returns [ , ] +*/ +function atleastnd( ndims, arrays ) { + var strides; + var shape; + var out; + var sh; + var st; + var N; + var n; + var i; + var j; + + out = []; + for ( i = 0; i < arrays.length; i++ ) { + if ( isndarrayLike( arrays[ i ] ) ) { + N = dims( arrays[ i ] ); + if ( N >= ndims ) { + out.push( arrays[ i ] ); + } else { + sh = getShape( arrays[ i ], false ); + n = ndims - N; + st = getStrides( arrays[ i ], false ); + shape = []; + strides = []; + for ( j = 0; j < n; j++ ) { + shape.push( 1 ); + strides.push( st[ 0 ] ); + } + for ( j = 0; j < sh.length; j++ ) { + shape.push( sh[ j ] ); + strides.push( st[ j ] ); + } + out.push( ndarray( getDType( arrays[ i ] ), getData( arrays[ i ] ), shape, strides, getOffset( arrays[ i ] ), getOrder( arrays[ i ] ) ) ); // eslint-disable-line max-len + } + } else { + out.push( broadcastScalar( arrays[ i ], DTYPE, ones( ndims ), ORDER ) ); // eslint-disable-line max-len + } + } + return out; +} + + +// EXPORTS // + +module.exports = atleastnd; diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/package.json b/lib/node_modules/@stdlib/ndarray/base/atleastnd/package.json new file mode 100644 index 000000000000..b3a9a45cd889 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/package.json @@ -0,0 +1,62 @@ +{ + "name": "@stdlib/ndarray/base/atleastnd", + "version": "0.0.0", + "description": "Coverts the inputs to ndarrays having at least the provided number of dimensions.", + "license": "Apache-2.0", + "author": { + "name": "The Stdlib Authors", + "url": "https://github.com/stdlib-js/stdlib/graphs/contributors" + }, + "contributors": [ + { + "name": "The Stdlib Authors", + "url": "https://github.com/stdlib-js/stdlib/graphs/contributors" + } + ], + "main": "./lib", + "directories": { + "benchmark": "./benchmark", + "doc": "./docs", + "example": "./examples", + "lib": "./lib", + "test": "./test" + }, + "types": "./docs/types", + "scripts": {}, + "homepage": "https://github.com/stdlib-js/stdlib", + "repository": { + "type": "git", + "url": "git://github.com/stdlib-js/stdlib.git" + }, + "bugs": { + "url": "https://github.com/stdlib-js/stdlib/issues" + }, + "dependencies": {}, + "devDependencies": {}, + "engines": { + "node": ">=0.10.0", + "npm": ">2.7.0" + }, + "os": [ + "aix", + "darwin", + "freebsd", + "linux", + "macos", + "openbsd", + "sunos", + "win32", + "windows" + ], + "keywords": [ + "stdlib", + "base", + "strided", + "array", + "ndarray", + "atleast", + "broadcast", + "np.atleast_1d" + ], + "__stdlib__": {} +} diff --git a/lib/node_modules/@stdlib/ndarray/base/atleastnd/test/test.js b/lib/node_modules/@stdlib/ndarray/base/atleastnd/test/test.js new file mode 100644 index 000000000000..ad3e6a8704e8 --- /dev/null +++ b/lib/node_modules/@stdlib/ndarray/base/atleastnd/test/test.js @@ -0,0 +1,89 @@ +/** +* @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'; + +// MODULES // + +var tape = require( 'tape' ); +var isArray = require( '@stdlib/assert/is-array' ); +var getShape = require( '@stdlib/ndarray/base/shape' ); +var zeros = require( '@stdlib/ndarray/zeros' ); +var ndarray = require( '@stdlib/ndarray/base/ctor' ); +var atleastnd = require( './../lib' ); + + +// TESTS // + +tape( 'main export is a function', function test( t ) { + t.ok( true, __filename ); + t.strictEqual( typeof atleastnd, 'function', 'main export is a function' ); + t.end(); +}); + +tape( 'the function converts the inputs to ndarrays having at least the provided number of dimensions.', function test( t ) { + var out; + var x; + var y; + var z; + + x = zeros( [ 2, 2 ] ); + y = zeros( [ 2 ] ); + z = 10.0; + + out = atleastnd( 3, [ x, y, z ] ); + + t.strictEqual( isArray( out ), true, 'returns expected value' ); + t.deepEqual( getShape( out[ 0 ] ), [ 1, 2, 2 ], 'returns expected value' ); + t.deepEqual( getShape( out[ 1 ] ), [ 1, 1, 2 ], 'returns expected value' ); + t.deepEqual( getShape( out[ 2 ] ), [ 1, 1, 1 ], 'returns expected value' ); + t.notEqual( out[ 0 ], x, 'returns new instance' ); + t.notEqual( out[ 1 ], y, 'returns new instance' ); + t.notEqual( out[ 2 ], z, 'returns new instance' ); + t.strictEqual( out[ 0 ] instanceof ndarray, true, 'returns expected value' ); + t.strictEqual( out[ 1 ] instanceof ndarray, true, 'returns expected value' ); + t.strictEqual( out[ 2 ] instanceof ndarray, true, 'returns expected value' ); + + t.end(); +}); + +tape( 'the function returns the same ndarray if provided an ndarray having dimensions more than or equal to `ndims`', function test( t ) { + var out; + var x; + var y; + var z; + + x = zeros( [ 2, 2 ] ); + y = zeros( [ 3, 2, 2 ] ); + z = zeros( [ 1, 3, 2, 2 ] ); + + out = atleastnd( 3, [ x, y, z ] ); + + t.strictEqual( isArray( out ), true, 'returns expected value' ); + t.deepEqual( getShape( out[ 0 ] ), [ 1, 2, 2 ], 'returns expected value' ); + t.deepEqual( getShape( out[ 1 ] ), [ 3, 2, 2 ], 'returns expected value' ); + t.deepEqual( getShape( out[ 2 ] ), [ 1, 3, 2, 2 ], 'returns expected value' ); + t.notEqual( out[ 0 ], x, 'returns new instance' ); + t.strictEqual( out[ 1 ], y, 'returns new instance' ); + t.strictEqual( out[ 2 ], z, 'returns new instance' ); + t.strictEqual( out[ 0 ] instanceof ndarray, true, 'returns expected value' ); + t.strictEqual( out[ 1 ] instanceof ndarray, true, 'returns expected value' ); + t.strictEqual( out[ 2 ] instanceof ndarray, true, 'returns expected value' ); + + t.end(); +});