diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md b/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md index ab659bbc55ba..4fa7b5ae862c 100644 --- a/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md +++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md @@ -784,7 +784,32 @@ var arr = new Float64ArrayFE( 'little-endian', [ 1.0, 0.0, 1.0 ] ); var out = arr.reduceRight( reducer, 0 ); // returns 2 ``` - + + + +#### TypedArrayFE.prototype.reverse() + +Reverses an array in-place. + +```javascript +var Float64ArrayFE = fixedEndianFactory( 'float64' ); + +var arr = new Float64ArrayFE( 'little-endian', [ 1.0, 2.0, 3.0 ] ); +// returns + +var out = arr.reverse(); +// returns + +var v = out.get( 0 ); +// returns 3.0 + +v = out.get( 1 ); +// returns 2.0 + +v = out.get( 2 ); +// returns 1.0 +``` + #### TypedArrayFE.prototype.set( arr\[, offset] ) diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.reverse.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.reverse.js new file mode 100644 index 000000000000..31d797d79560 --- /dev/null +++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.reverse.js @@ -0,0 +1,55 @@ +/** +* @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 bench = require( '@stdlib/bench' ); +var factory = require( './../lib' ); +var pkg = require( './../package.json' ).name; + + +// VARIABLES // + +var Float64ArrayFE = factory( 'float64' ); + + +// MAIN // + +bench( pkg+':reverse', function benchmark( b ) { + var out; + var arr; + var i; + + arr = new Float64ArrayFE( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0 ] ); + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + out = arr.reverse( ); + if ( typeof out !== 'object' ) { + b.fail( 'should return an object' ); + } + } + b.toc(); + if ( !( out instanceof Float64ArrayFE ) ) { + b.fail( 'should return a typed array' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.reverse.length.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.reverse.length.js new file mode 100644 index 000000000000..bdbc03292792 --- /dev/null +++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.reverse.length.js @@ -0,0 +1,99 @@ +/** +* @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 bench = require( '@stdlib/bench' ); +var pow = require( '@stdlib/math/base/special/pow' ); +var zeroTo = require( '@stdlib/array/zero-to' ); +var factory = require( './../lib' ); +var pkg = require( './../package.json' ).name; + + +// VARIABLES // + +var Float64ArrayFE = factory( 'float64' ); + + +// FUNCTIONS // + +/** +* Creates a benchmark function. +* +* @private +* @param {PositiveInteger} len - array length +* @returns {Function} benchmark function +*/ +function createBenchmark( len ) { + var arr = new Float64ArrayFE( 'little-endian', zeroTo( len ) ); + return benchmark; + + /** + * Benchmark function. + * + * @private + * @param {Benchmark} b - benchmark instance + */ + function benchmark( b ) { + var out; + var i; + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + out = arr.reverse(); + if ( typeof out !== 'object' ) { + b.fail( 'should return an object' ); + } + } + b.toc(); + if ( !( out instanceof Float64ArrayFE ) ) { + b.fail( 'should return a typed array' ); + } + b.pass( 'benchmark finished' ); + b.end(); + } +} + + +// MAIN // + +/** +* Main execution sequence. +* +* @private +*/ +function main() { + var len; + var min; + var max; + var f; + var i; + + min = 1; // 10^min + max = 6; // 10^max + + for ( i = min; i <= max; i++ ) { + len = pow( 10, i ); + f = createBenchmark( len ); + bench( pkg+':reverse:len='+len, f ); + } +} + +main(); diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js index 079902a6c333..85038d02eb6d 100644 --- a/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js +++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js @@ -44,6 +44,7 @@ var contains = require( '@stdlib/array/base/assert/contains' ).factory; var bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' ); var capitalize = require( '@stdlib/string/base/capitalize' ); var format = require( '@stdlib/string/format' ); +var floor = require( '@stdlib/math/base/special/floor' ); var fromIterator = require( './from_iterator.js' ); var fromIteratorMap = require( './from_iterator_map.js' ); @@ -963,6 +964,39 @@ function factory( dtype ) { // eslint-disable-line max-lines-per-function, stdli return acc; }); + /** + * Reverse an array in-place. + * + * @private + * @name reverse + * @memberof TypedArray.prototype + * @type {Function} + * @throws {TypeError} `this` must be a typed array + * @returns {TypedArray} reversed array + */ + setReadOnly( TypedArray.prototype, 'reverse', function reverse( ) { + var buf; + var tmp; + var len; + var N; + var i; + var j; + + if ( !isTypedArray( this ) ) { + throw new TypeError( format( 'invalid invocation. `this` is not %s %s.', CHAR2ARTICLE[ dtype[0] ], CTOR_NAME ) ); + } + buf = this._buffer; + len = this._length; + N = floor( len / 2 ); + for ( i = 0; i < N; i++ ) { + j = len - i - 1; + tmp = buf[ GETTER ]( i * BYTES_PER_ELEMENT, this._isLE ); + buf[ SETTER ]( i * BYTES_PER_ELEMENT, buf[ GETTER ]( j*BYTES_PER_ELEMENT, this._isLE ), this._isLE ); + buf[ SETTER ]( j*BYTES_PER_ELEMENT, tmp, this._isLE ); + } + return this; + }); + /** * Sets an array element. * diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/test/test.reverse.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/test/test.reverse.js new file mode 100644 index 000000000000..ad23a2a4ae89 --- /dev/null +++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/test/test.reverse.js @@ -0,0 +1,126 @@ +/** +* @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 tape = require( 'tape' ); +var hasOwnProp = require( '@stdlib/assert/has-own-property' ); +var hasSameValues = require( '@stdlib/array/base/assert/has-same-values' ); +var isFunction = require( '@stdlib/assert/is-function' ); +var factory = require( './../lib' ); + + +// TESTS // + +tape( 'main export is a function', function test( t ) { + t.ok( true, __filename ); + t.strictEqual( typeof factory, 'function', 'main export is a function' ); + t.end(); +}); + +tape( 'the function returns a function', function test( t ) { + var ctor = factory( 'float64' ); + t.strictEqual( isFunction( ctor ), true, 'returns expected value' ); + t.end(); +}); + +tape( 'attached to the prototype of the returned function is a `reverse` method', function test( t ) { + var ctor = factory( 'float64' ); + t.strictEqual( hasOwnProp( ctor.prototype, 'reverse' ), true, 'returns expected value' ); + t.strictEqual( isFunction( ctor.prototype.reverse ), true, 'returns expected value' ); + t.end(); +}); + +tape( 'the method throws an error if invoked with a `this` context which is not a typed array instance', function test( t ) { + var values; + var ctor; + var arr; + var i; + + ctor = factory( 'float64' ); + arr = new ctor( 'little-endian', 5 ); + + values = [ + '5', + 5, + NaN, + true, + false, + null, + void 0, + {}, + [], + function noop() {} + ]; + for ( i = 0; i < values.length; i++ ) { + t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] ); + } + t.end(); + + function badValue( value ) { + return function badValue() { + return arr.reverse.call( value, 0 ); + }; + } +}); + +tape( 'the method returns an empty array if operating on an empty typed array', function test( t ) { + var ctor; + var arr; + var out; + + ctor = factory( 'float64' ); + arr = new ctor('little-endian'); + out = arr.reverse(); + t.strictEqual( out.buffer, arr.buffer, 'returns expected value' ); + t.strictEqual( out.length, 0, 'returns expected value' ); + t.end(); +}); + +tape( 'the method reverses elements of a typed array in-place', function test( t ) { + var expected; + var ctor; + var arr; + var out; + + ctor = factory( 'float64' ); + arr = new ctor( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 5.0 ] ); + expected = new ctor( 'little-endian', [ 5.0, 4.0, 3.0, 2.0, 1.0 ] ); + out = arr.reverse(); + + t.strictEqual( out instanceof ctor, true, 'returns expected value' ); + t.strictEqual( out, arr, 'returns expected value' ); + t.strictEqual( arr.length, expected.length, 'returns expected value' ); + t.strictEqual( hasSameValues(out, expected), true, 'returns expected value' ); + t.end(); +}); + +tape( 'the method does not change the array length', function test( t ) { + var ctor; + var arr; + var out; + + ctor = factory( 'float64' ); + arr = new ctor( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 5.0 ] ); + out = arr.reverse(); + + t.strictEqual( out.length, 5, 'returns expected value' ); + t.end(); +});